options manual - spectra · options manual version 2.0 january 2, 2012 c sinus messtechnik gmbh...

Options Manual

Version 2.0January 2, 2012

c© SINUS Messtechnik GmbHFoepplstrasse 13, 04347 Leipzig, Germany

http://www.soundbook.de/[email protected]

http://www.soundbook.de/e

mailto:[email protected]

c© SINUS Messtechnik GmbH

All rights reserved. No part of this manual may be reproduced, stored in a retrieval system or transmitted,in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the priorwritten permission of SINUS Messtechnik GmbH. We reserve the right to alter the contents of this manualwithout prior notice. SINUS Messtechnik GmbH accepts no responsibility for technical or typographicalerrors or deficiencies in this manual. Furthermore, SINUS Messtechnik GmbH disclaims all liability fordamage occurring directly or indirectly as a result of the delivery, performance or usage of this material.

All products or services mentioned in this document are the trademarks or service marks of their respectivecompanies or organizations.

Manual SAMURAI 2 of 66 SINUS Messtechnik GmbH

CONTENTS

Contents1 HVMA 6

1.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61.2 Analysis: HVMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81.3 HVMA graph (Human Vibration Multi Analyzer) . . . . . . . . . . . . . . . . . . . . . . . . 9

2 Automation Option 132.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.2 Automatic calibration check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

2.2.1 Automatic calibration check - Step by step . . . . . . . . . . . . . . . . . . . . . . 142.3 Measurement Data Collector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.3.1 Display and export of files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

3 Passby 183.1 Passby mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

4 NoiseCAM 204.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204.2 NoiseCam in regular operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4.2.1 NoiseCam graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

5 Vibration Meter 225.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 225.2 Analysis: Vibration Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2.1 Vibration Meter graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

6 Signal Generator 256.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

6.1.1 Sine, Square and Triangle signals . . . . . . . . . . . . . . . . . . . . . . . . . . 256.1.2 Multi-Sine, Sweep linear and logarithmic . . . . . . . . . . . . . . . . . . . . . . . 266.1.3 Pseudo-Random . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 276.1.4 Impulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 286.1.5 User defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7 Fractional Octaves 297.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 297.2 Analysis: Fractional octaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

8 TCP Server 308.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

9 FRF / Cross Analysis 319.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 319.2 Masuring mode: Impact response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

9.2.1 Impact response measurements - Step by step . . . . . . . . . . . . . . . . . . . 329.3 Analysis: Cross Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

9.3.1 Force/Exponential window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 349.4 Cross Analysis graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359.5 Sound level trigger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

SINUS Messtechnik GmbH 3 of 66 Manual SAMURAI

CONTENTS

10 Order Analysis 3810.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3810.2 Measuring mode: Delta Tacho . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3810.3 Analysis: Order (from FFT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

11 Building Acoustics 4011.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12 Sound Intensity 1 4212.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.1.1 Phase calibration for sound intensity probes . . . . . . . . . . . . . . . . . . . . . 4212.2 Measuring modes: Sound Intensity Standard and Auto-Store . . . . . . . . . . . . . . . . 4412.3 Analysis: Sound Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4412.4 Sound Intensity graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

13 Building Vibration 4713.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4713.2 Building vibration DIN 4150-2 and DIN 4150-3 . . . . . . . . . . . . . . . . . . . . . . . . 47

13.2.1 Analysis principles according to DIN 4150-3 . . . . . . . . . . . . . . . . . . . . . 4813.3 Building Vibration graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

14 Sound Intensity Map 5114.1 NoiseCam in the measuring mode Sound Intensity Map . . . . . . . . . . . . . . . . . . . 5114.2 Contour graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

15 Post Processing 5415.1 Post Processing - Step by step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

15.1.1 Adding post processing channels . . . . . . . . . . . . . . . . . . . . . . . . . . . 5415.2 AddOn: Psychoacoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

16 Tone Assessment 58

17 Room Acoustics 5917.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5917.2 Room Acoustics in Samurai . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

18 SAMURAI Sound Power 6118.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61

19 Weatherstation 6219.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6219.2 Weather Data graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

20 remoteSAMURAI 6420.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

INDEX 65


CONTENTS

OutlineSAMURAITM is a Windows programme implementing measurement and analysis functions for the analyzersSoundbook Mk I and Mk II, the boxes APOLLOTM and HARMONIETMas well as the multichannel analyzerMSX16 produced by SINUS Messtechnik GmbH. The current version 2.0 of SAMURAI is targeted to performenvironmental acoustic and vibration measurements. SAMURAI is extremely flexible and easy to use.

SAMURAI offers various extension options. These options are specified in this manual and collocated in thefollowing table 0.1.

Option Description Colour

HVMA Human Vibration Multi Analysis according to ISO 8041, NS 8176, ISO 2631 andISO 5349

HVMAOption

Automation Control of external processes (via RS232, external executable programme) AutomationOption

Passby Measures noise of passing vehicles Passby

NoiseCam Recording video data with an USB WebCam NoiseCAM

Vibration Meter Measurement of vibrations according to DIN 45666, ISO 10816, ISO 7919 andISO 2954

VibrationMeter

Signal Generator Extension of the basic signal generator (white and pink noise) by adding variousother signal types

Signal-generator

Fractional Octaves Calculation and representation of 1/3, 1/6, 1/12 and 1/24 octaves fractionalOctaves

TCP Server TCP connection to external programmes (e.g. SAMBA, remoteSAMURAI) TCPServer

FRF / Cross Analysis Measurement of transfer functions, auto correlations etc. FRFOption

Order Analysis Measurement and representation of order spectra Order-analysis

Building Acoustics Measurements according to ISO 140-4; ISO 140-5; ISO 140-7/8. This option alsorequires the TCP Server option.

Building-acoustic

SAMURAI Sound Intensity Sound intensity/power measurements according to ISO 9614-1 and ISO 9614-2 Sound-intensity 1

Building Vibration Measurement of structural vibrations in buildings according to DIN 4150-2 andDIN 4150-3.

Building-vibration

Sound Intensity Map Creation of sound intensity maps of objects SoundIntensity Map

Post Processing Post processing of audio data for calculating values PostProcessing

Tone Assessment Assessment of pure tones according to ISO 1996-2 Tone-assessment

Room Acoustics Measurement of acoustical parameters of a room as: RASTI, STI, STIPA, STITEL,EDT, Clarity etc.

Roomacoustic

SAMURAI Sound Power Sound power measurements according to ISO 3744, ISO 3745 and ISO 3746. Sound-power

Weatherstation Weatherstations by Reinhard or Vaisala are supported Weatherstation

remote SAMURAI TCP client for remote control and monitoring of SAMURAI. This option also re-quires the TCP Server option.

remote-SAMURAI

Table 0.1: List of SAMURAI options


1 HVMA

1 HVMAHVMAOption

The effects of vibration at the workplace (e.g. when working with hammer drills) can range from nuisance orreduced productivity up to health damage. Since July 2002, European Parliamentary Guideline 2002/44/EGregulates the minimum provisions for protection of workers against damaging vibrational effects at the work-place. This guideline obliges the EU member states to enact laws and issue administrative regulations inorder to meet these obligations. For example, in Germany the “LärmVibrationsArbSchV” regulations cameinto effect on March 9th, 2007.

The HVMA (Human Vibration Multi-Analyzer) option allows the measurement of vibration for the purposeof evaluating the effects of the vibration on a person. Our measurement system conforms to the requiredcharacteristics and permitted margins of error for measuring systems according to DIN EN ISO 8041. Thissoftware option allows simultaneous vibration measurement in all three spatial directions. For the frequencyweighting, all filter curves in the ISO 2631 and ISO 5349 standards are available. Alongside the measuredvalues for each of the three spatial directions, the value of the result vector is displayed for hand-arm andwhole-body vibration. In parallel to the above, third-octave, FFT and time signals can be displayed and savedin both weighted and non-weighted forms.

The portable and robust Soundbook measurement system is available with up to eight channels, thus allow-ing an acoustical analysis to be performed in parallel to a vibration investigation with this option, whereby allthe basis functionality of SAMURAI is also available. Furthermore, the NOISECAM VIDEO option allows themeasurement situation to be recorded synchronously via a video camera.

1.1 Technical Data

• implemented Standards: ISO 8041, ISO-2631, ISO 5349, ISO-8662, UNI-2614, UNI-11048, UNI-9916

• 2 / 4 / 8 channels

• Measurement ranges from 0.15 Hz

• ISO 2631 Evaluation of human exposure to whole-body vibration

• ISO 5349 Measurement and evaluation of human exposure to hand-transmitted vibration

• ISO-8662 ISO 8662 Hand-held portable power tools - Measurement of vibrations at the handle

• Frequency weightings Wc, Wd, Wg, Wj, Wk, Wb, Wbcomb, Wm, Wdb, Wh, Wa, Wv

• Measurement values: momentary, exposure, crest, max, min, CF, Peak, VDV, MTVV

• Vector calculation in real-time with axis weightings

• Optional video recording (with NOISECAM VIDEO option)

• Additionally available: time signal, third-octave and FFT of the vibration signal as well as acousticmeasurement values from the SAMURAI basis functionality

• Export to Excel-, TXT, UFF and NWWin


1.1 Technical Data

Figure 1.1: Frequency-weighted third-octave and FFT spectrum with NoiseCAM

Figure 1.2: HVMA measurement with sound level recording and NoiseCAM


1 HVMA

1.2 Analysis: HVMA

In HVMA analysis the measuring values are decimated by the analyzer. Similar to the other analysis modes,filtering and time-averaging is done by the PC Please note the HVMA Analysis is only available if accelerom-eters are connected to the channels.

ATTENTION! According to the standard, the data conversion reference value from m/s2

to dB always is 10−6 m/s2 for all channels, independent of the value set inthe transducer database. SAMURAI will notify you accordingly.

In table 1.1 all HVMA weighting filters available in the programme are listed and reference to the applyingstandards is made.

Filter Reference (Standard)

Wb ISO 8041:2003 or ISO 2631-4.

Wc ISO 8041:2003 or ISO 2631-1.

Wd ISO 8041:2003 or ISO 2631-1.

Wh ISO 8041:2003 or ISO 5349-1.

Wj ISO 8041:2003 or ISO 2631-1.

Wk ISO 8041:2003 or ISO 2631-1.

Wm or Wb comb. ISO 8041:2003 or ISO 2631-2.

Wdb ISO 2631-2.

Wg ISO 2631-2.

Wa NS 8176 (building vibrations, acceleration).

Wv NS 8176 (building vibrations, velocity).

Table 1.1: Standard HVMA filters

The setup window for the HVMA analysis is shown in figure 1.3 and described in table 1.2.

Figure 1.3: Setup HVMA analysis


1.3 HVMA graph (Human Vibration Multi Analyzer)

Parameter Description

HVMA En-/disable HVMA analysis for the corresponding channel.

Store mode store mode of data recording

Axis Select the axis for the connected transducers.

Weight Select the desired frequency weighting.

Sum factor Select the sum factor.

Averaging mode Linear 1s, Exponential 8s, Fast, Slow

HVMA Time Signal (Un)Check this box to (dis-)enable the filtering of the input signal according to the Weight setting.Please note that the signal will also be stored filtered.

HVMA FFT En-/Disable the calculation of a FFT of the frequency-weighted signal.

Number of lines 101, 201, 401, 801, 1601, 3201, 6401, 12801, 25601

Window figure 1.4

Overlap Time slot overlap for FFT calculation. Please note that values exceeding 50 % at a bandwidth of20 kHz could overload the processor and thus cause real-time capability losses and record failures.A 700 MHz Pentium 3 processor is able to calculate four channels with an overlap of 50 %.

Averaging mode Linear single or repeat, Exponential, Fast, Slow

Linear count Number of spectra used for linear averaging

Exp. time (s) The time constant for exponential averaging.

Delta time The time interval for data storage.

Table 1.2: Parameters for the HVMA analysis window

Figure 1.4: Window functions for FFT


The HVMA graph is used for human Vibration measurements and analysis according to ISO 8041. In theHVMA analysis simultaneous measurements at up to 4 positions are performed. Set the frequency weight-ing for the measuring channels below Setup. A single HVMA graph displays data from a single position.

The graph is divided into several areas. In the first three areas the values of the three spatial directions x, yand z are displayed as figures. Additionally, bar graphs for the values of the three spatial directions and thesum of these are displayed. Table 1.4 shows a selection of available values for human vibration analysis.The assignment of the individual values in the bar display is shown in table 1.3.


1 HVMA

Figure 1.5: HVMA graph

Value Position Colour

Value 1 or main value of each axis Left bar or dashed bar Text colour of the corresponding axis

Momentary accelerationpeak value (AW,peak(t))

Right bar or bar in the background Background colour of the correspondingaxis

Accelerationpeak value (AW,peak)

Peak display Peak colour

Table 1.3: Assignment of values - Bar display HVMA graph

Value Description

aW RMS acceleration.

aeq Equivalent continuous RMS acceleration (over the entire measurement duration).

aW,max Maximum level of AW. This value is not available for the Sum.

aW,min Minimum level of AW. This value is not available for the Sum.

aW,t “Running RMS” acceleration as described in ISO 2631-1.

VDV “Fourth power vibration dose” as described in ISO 2631-1.

MTVV “Maximum transient vibration value” is the maximum level of AW,t as described in ISO 2631-1. This valueis not available for the Sum.

aW,peak(t) Peak acceleration in a single averaging interval t.

aW,peak Peak acceleration over the entire measurement duration. This value is not available for the Sum.

CF(t) Crest factor in a single averaging interval.

CF Crest factor over the entire measurement duration. This value is not available for the Sum.

A(1) Equivalent acceleration normalised to a 1 hour period.




Table 1.4: HVMA values



Figure 1.6: Parameters HVMA graph- Level 0

The parameters in figure 1.6 are described in table 1.5.


Position displayed Select the measuring position.

X (Y or Z) axis 1 select the value to be displayed as Value 1.



X (Y or Z) axis Font Select the font used for the figures.

X (Y or Z) axis Color Select the background colour of the graph.

Display Units Select the display units: dB, m/s2, mm/s2, g, ft/s2 or in/s2. Please note that some of thecalculated values cannot be converted to db (e.g. VDV).

Update rate The update rate for the displayed values.

Table 1.5: Parameters HVMA graph – Level 0

The parameters below General are the same as for the history graph (see paragraph ??).

Figure 1.7: Parameters HVMA graph - Bar display

The following table describes the parameters for the bar display in the HVMA graph.


Autoscale Check this box to set autoscaling by SAMURAI.

Start Enter the lower limit for the bar when autoscale is enabled.

Stop Enter the upper limit for the bar when autoscale is enabled.

Division Enter the number of scale divisions.


1 HVMA


Autorange amplitude This parameter is only available when autoscaling is enabled and the axis unit is dB or EU loga-rithmic. If Automatic is selected, SAMURAI defines the y-axis range limits as described above (see“Auto scale on first trace”). Use the remaining options to select a fixed range either from the upperor from the lower limit of the maximum expected range.

Linear scale factor This parameter is only available when autoscaling and linear EU-axis are set. The y-axis rangealways starts at 0. The upper limit results from the division of the maximum possible range by thelinear scale factor.

Background Background colour for the bar display.

Empty color Background colour of the bars.

Peak color Colour for peak display in the bar display.

Bar Font Font for bar display scale.

EU units Check this box to display acceleration in physical unit; if unchecked, display in dB.

EU logarithmic Check this box to use logarithmic scaling of the y-axis for physical units.

Numeric format Select either decimal or exponential display.

Precision Select the number of digits to the right of the decimal point.

Bar display Select horizontal or vertical bar display in the graph.

Table 1.6: Parameters HVMA graph - Bar display


2 Automation OptionThis option is particularly applicable for officially certifiable environmental noise monitoring, for routine (e.g. Automation

Option

end-of-line) tests and for general measurement tasks which require a notification to be generated upon theoccurrence of specific events. The option offers a wide range of possibilities for notification and control inspecific measurement situations. Furthermore, this option allows measurement values of similar type to becollected from a series of separate measurements.

This option allows the device to be set up to react automatically upon the occurrence of trigger conditions,e.g. in order to send a notification, to switch an output signal or to start an external program. Such atrigger could be activated by the deviation of a spectrum from a configurable reference spectrum, a levelexceedance, or other events. In particular for remote monitoring, this option also offers the possibility ofa time-controlled automatic calibration check of outdoor microphones equipped with electrostatic actuatorcalibration, together with an appropriate notification of the result of the check (e.g. via e-mail). A furthercomponent of this option is the “Measurement Data Collection Box”. This is used in order to collect mea-surement values of similar type from a series of separate measurements. At the end of each measurement,individual measurement values are collected into a table and saved in a separate file.

2.1 Technical Data

• Output events via COM, output channels, externally executable file, sound, text notification, e-mail orSMS

• Reference spectrum trigger (comparison of a frequency analysis with reference spectra)

• Transmission of status messages via e-mail and SMS

• Time-controlled automatic calibration check

• Measurement Data Collector Box (collects measurement values of similar type)

2.2 Automatic calibration check

This feature requires the “MEASURE AUTOMATION” option and may only be used for microphones with abuilt-in electrostatic actuator (GRAS 41CN, GRAS 41AM, Microtech Gefell WME960 H). Open the configu-ration window by selecting Analyzer -> Automatic calibration check in the main menu.

Figure 2.1: Configuration window “Automaticcalibration check”


2 AUTOMATION OPTION

2.2.1 Automatic calibration check - Step by step

When using the automatic calibration check follow the procedure below.

1. Define three output events.

• Output event for starting the calibration with the electrostatic actuator (e.g. via COM Port DTRPin).

• Output event for stopping the calibration with the electrostatic actuator (e.g. via COM Port DTRPin).

• Output event for the response to a calibration check failure (e.g. sending an e-mail/SMS).

2. Now select the microphone at the corresponding input channel and enable the third-octave analysisfor this channel. Since only the first third-octave analysis is always used for the calibration check, werecommend to use channel 1 for the microphone.

3. Open the window shown in figure 2.1 and set the desired parameter values.

4. Start the measurement.

2.3 Measurement Data Collector

The Measurement Data Collector is part of the SAMURAI automation option. You may use it to automaticallycollect, analyze and save measured data to a table. Which data are stored is defined at the end of ameasurement or a measurement event.In the main menu under Tools -> Measurement Data Collector you will find a submenu containing theentries of table 2.1.

Menu entry Description

New Create a new Measurement Data Collector file.

Open Open an existing Measurement Data Collector file.

Save as Saves a Measurement Data Collector file with a new name. The collector is cleared.

Close Close the current file.

Edit... Open a dialogue in which the current Measurement Data Collector file may be edited.

Collect from Recalled Collect the data from a recalled measurement as at measurement stop.

Reset Delete all collected data from the current Measurement Data Collector file.

View Display the collected data in a separate window.

Table 2.1: Submenu Measurement Data Collector

To collect data with the Measurement Data Collector follow the instructions below:

• Create a measurement setup or load an existing.

• Create a new Measurement Data Collector file or open an existing.

• If necessary, adjust the settings for data determination(Tools -> Measurement Data Collector -> Edit).

• Start measurement.

If the measurement is stopped or a measurement event has been detected, the data determination startsaccording to the given settings. SAMURAI operates as follows:

• The measured data is analyzed to identify its position within the measurement history.



• The data is extracted from the measurement and stored to a Measurement Data Collector file.

• If desired, the results of the last measurement are displayed in a separate window.

The Measurement Data Collector settings may be divided into two categories: first parameters for the datasearch (see top of the window in figure 2.2) and second parameters for defining which data are collected (seecentre of the window in figure 2.2). You may adjust all settings via Tools -> Measurement Data Collector-> Edit. Most of the settings are only available if the Measurement Data Collector is empty.

Figure 2.2: Edit Measurement Data Collector


Result Data container from which data is to be analyzed.

Search mode At the moment four search modes are available:

(None) No search, only the last value is saved.

Max The position of the maximum is determined according to the other parameters.

Min The position of the minimum is determined according to the other parameters.

Trigger A trigger is used to determine the position of the stored data.

Value Value from the data container which is to be analyzed.

Weight Frequency weighting which is to be applied to the spectral data before searching.

Integration/Derivation Integration and/or differentiation of the analyzed value. Only available for values (spectral data) whichmay be integrated/differentiated.

Trigger Trigger for the search feature.Table 2.2: Parameters for the search feature

You may define which values are saved by using the buttons Add... and Edit... on the left of the windowshown in figure 2.2. By clicking on the buttons you will open a window in which the parameters are set.The list containing the data to be stored has three columns. The first column contains a user defined name,the second an internal name and the third a unit.The operations which may be applied to this list are given and described in the following table 2.3:


2 AUTOMATION OPTION

Button Description

Add. . . Add a new value to the list and open the window with the parameters for this value (see fig. 2.3).

Edit . . . Open the window for editing the selected value (see fig. 2.3).

Remove Delete the selected value.

Move Up Shift the selected value upward.

Move Down Shift the selected value downward.

Table 2.3: Operations for the elements contained in the list in figure 2.2

Figure 2.3: Parameters for the values to be stored MeasurementData Collector

The parameters given in figure 2.3 are described in table 2.4.


Result Data container from which the value to be stored is retrieved. The list does not only contain theresults of the individual analysis operations as usual, but also some special data as: start date andtime, name of the measurement, user-defined text.

Stored value A value from the data container which is to be stored. For spectral values the whole spectrum maybe selected. If the search feature is set to Max or Min, you may additionally select the wanted value.

Store position Position/time at which the data retrieval starts.

Weight Frequency weighting of the values before retrieval.

Integration/Derivation Integration or differentiation of the values before retrieval.

Unit Select the unit for the level display.

User name Freely definable name of the value to be retrieved.

Maximum length Maximal length of the user-defined text.

Table 2.4: Parameters for the values to be stored

The parameter File contains the name of the Measurement Data Collector file. You may adjust it usingthe button Change.... You may check the box Show collected data after each measurement if you wantSAMURAI to display the data after each measurement. If you have selected User defined text under“Result”, SAMURAI requests you to enter your text into the window after each measurement (see fig. 2.4).To enter the text double-click on a data field in the window.Furthermore, you may accept or discard a measurement in this window. If you discard a measurement, themeasured data will not be deleted from the hard disk, but the discarded measurement is not considered inthe Measurement Data Collector!



Figure 2.4: Result window after each measurement

2.3.1 Display and export of files

The data collected with the Measurement Data Collector may be displayed in a separate window (see fig.2.5) (via Tools -> Measurement Data Collector -> View).To export the data to the desired format click on the corresponding button in the bottom line of the window.You may adjust user-defined texts by double-clicking on the corresponding field.

Figure 2.5: Result window Measurement Data Collector


3 PASSBY

3 PassbyThis option is used to measure the noise caused by passing vehicles. During such measurements the veloc-Passby

ity of the vehicle must be known. It is possible to obtain the velocity by using the second tachometer channelor by receiving external data. The conventional method to collect the necessary data is to use a light barrierdefining the measuring distance. A radar system is used to obtain the velocity of the vehicle and the enginevelocity is reported to the measuring station wirelessly.

The basic method in SAMURAI is the same, but collecting the data can be accomplished traditionally or viaa GPS-receiver combined with a small PC inside the car. A small PC in the car with a separate software(“Starpass”) calculates the vehicle speed, the engine speed and the position. The data are transferred toSAMURAI wirelessly. SAMURAI transfers the currently measured sound levels to Starpass which displaysthe received data on the PC display inside the car.

3.1 Passby mode

The passby option offers a measuring mode. Its parameters are shown in figure 3.1 and described in thetable 3.1.

Figure 3.1: Passby measurement setup window


Distance calculation Possible values are: Internal (Tacho2) or External. The Internal Tacho2 is used for the traditionalmethod (using light barriers and radar). If Starpass is used, select External.

Measuringdistance

Length of the measuring distance. The microphones are installed halfway of this distance.

Vehicle length Length of the test vehicle.

Start trigger Trigger starting the measurement. The trigger condition must be fulfilled when the vehicle is pass-ing the starting point of the measuring distance. This parameter is only available if the internaltachometer channel (measuring with light barrier) is selected.

Validation test SAMURAI is able to check whether a defined vehicle speed or engine speed is reached during themeasurement. If a validation test has been defined, SAMURAI will display a window at the end of themeasurement which contains the measured results (figure 3.3). You may now confirm or repeat themeasurement. The same window is displayed by Starpass enabling the driver to confirm or repeatthe measurement also.


3.1 Passby mode


Add test... Create a new validation test.

Remove test Remove a validation test.

Table 3.1: Parameters for the Passby mode

Figure 3.2: Parameters validation test

The vehicle speed or the engine speed can be used for the validation test. The validation may be per-formed at three positions: at the starting point, halfway (microphone position) or at the end of the measuringdistance. You have to define the vehicle/motor speed and the tolerances in the window shown in figure 3.2.

Figure 3.3: Validation test - Passby

The passby option provides the menu External Data in the Setup-Tab. During a passby measurement thedata sent by Starpass (via Wireless LAN) will be received and averaged in the time domain by SAMURAI.


4 NOISECAM

4 NoiseCAMFor various measurement tasks it can be useful to have a video recording available in addition to measuredNoiseCAM

levels and audio recordings. A video can document the measurement situation and also allow the measuredlevel to be attributed to the corresponding noise source. Applications include for example measurements atworkplaces, traffic routes or public events.

In addition to audio recording, this option allows a video to be recorded synchronously with a freely selectablecompression rate. Furthermore, two values from a measurement channel can be superimposed on thevideo together with the measurement time. Thus, measurement sequences and conditions can be easilyand clearly documented. The export to a multimedia standard format enables the video to be replayed onevery PC. In this way, a clear documentation of sound level exceedances may be delivered to the originator.

4.1 Technical Data

• Video recording synchronous to noise and vibration measurement

• Superimposition of date, time and levels

• Compatible with most cameras and web-cams

• Fast and efficient video compression

• Selectable frame rate

• Superimposition of a company logo

• Export as WMF and QuickTime

4.2 NoiseCam in regular operation

With the NoiseCam option SAMURAI is able to record video data coming from a USB Webcam syn-chronously to the other data (time signal, spectra, etc.). You may export the recorded video data togetherwith the audio data later. By double-clicking on the item on the first level ( ) you may open a window inwhich you may enable/disable the video recording and set the store condition to be applied. Click on thebutton Edit to open another window for setting the NoiseCam (figure 4.1).

Figure 4.1: NoiseCam setup


4.2 NoiseCam in regular operation

The window is divided into three areas: the preview of the captured video, the settings for the video optionand further information on the current settings (Data rate, Frame size, Format, Resolution, Max. recordingspeed). The displayed value for the max. recording speed is an approximate value calculated in this windowon the basis of the time necessary for data compression and storage on the hard disc. The parameters forthe video capture (figure 4.1) are described in table 4.1. You may modify some parameters while measuringby double-clicking or using the context menu in the preview window.

4.2.1 NoiseCam graph

This graph is only available if a webcam is connected to the PC and if the NoiseCAM option is included inyour software license. The parameters in the setup window may be changed during the measurement andare described in table 4.1.

Figure 4.2: Parameters NoiseCam graph


Video driver List of available video drivers. We recommend to use the Microsoft WDM driver.

Format... Opens a video driver window to select the video format. Some drivers do not provide this windowIn that case the button is disabled.

Set source... Opens a video driver window to select the video source. Some drivers do not provide this windowIn that case the button is disabled.

Frame rate Defines the number of frames per second. Depending on the performance of the PC and thevideo driver some frame rates might not be supported.

Text Select the position for superimposed measurement values or disable the feature.

Date font Select the font for the superimposed date string.

Level font Select the font for the superimposed levels.

Background mode Select transparent or opaque background of the superimposed strings.

Level channel Define the source channel for the levels to display.

Value 1 First value to display.

Value 2 Second value to display.

Compress video stream (Un)Check this box to (dis-)enable the proprietary video data compression.

Quality Define the quality for the video data compression selecting either: Low, Medium, High.

Key frame every Define at which intervals frames are saved.

Table 4.1: NoiseCam parameters


5 VIBRATION METER

5 Vibration MeterIn the vibrational analysis of machines and equipment, typically accelerometers are applied. However, asVibration

Meter

well as the effective vibrational acceleration, the vibrational velocity and displacement are often also ofinterest. The latter two values can be calculated via single and double integration, respectively, of an ac-celerometer signal.

This option calculates vibrational velocity and displacement values via single and double integration of asignal from an accelerometer. Momentary and peak values are continuously calculated, as are the maximal,peak and effective values since the beginning of the measurement. In addition, high- and low-pass filters areavailable with selectable cut-off frequencies. This option satisfies the requirements for a vibration severitymeter according to the ISO 2954, ISO 7919 and ISO 10816 standards.

5.1 Technical Data

• implemented Standards: ISO 2954, ISO 7919, ISO 10816, DIN 45666

• Sensors: Accelerometers

• Measurement range: 2 Hz to 20 kHz

• Software:

– Selectable digital high-pass filter: 2, 5, 10, 20, 55, 100, 200 and 500 Hz

– Selectable digital low-pass filter: 0.1, 0.2, 0.5, 1, 2, 5, 10 and 20 kHz

– Display in selectable standard units, e.g. m/s2, g, mm/s, µm

– Numerical display of RMS, PEAK, EQ and MAX for the acceleration, velocity and displacementin the vibration meter window; graphical display in time history graphs

– Export to Excel, TXT & UFF format files and directly to the NWWin software

5.2 Analysis: Vibration Meter

This analysis option allows vibration measurements according to DIN 45666 and ISO 2954. The parametersare shown in figure 5.1. The description of the parameters is given in table 5.1. The levels and filters arecalculated by the PC from the decimated time signal. The calculated values are listed in table 5.2.

Figure 5.1: Setup Vibration Meter


5.2 Analysis: Vibration Meter


Enable En-/Disable the calculation of levels for the Vibration Meter analysis for a channel.

Store mode Store conditions for data recording

High Pass filter Limiting frequency for the high pass filter. (2 Hz, 5 Hz, 10 Hz, 20 Hz, 50 Hz, 100 Hz, 200 Hz and 500 Hz)

Low Pass Filter Limiting frequency for the low pass filter. (0.1 kHz, 0.2 kHz, 0.5 kHz, 1 kHz, 2 kHz, 5 kHz, 10 kHz and 20 kHz)

Averaging mode Define the time constant for the exponential averaging: (Fast→ 125 ms, Slow→ 1 s, Exp. 8→ 8 s).

Table 5.1: Parameters for the Vibration Meter analysis window

You may open the setup window for a channel by double-clicking in the entry on the second level of the treestructure (individual channel). The parameters are the same as in table 5.1.

5.2.1 Vibration Meter graph

The Vibration Meter is used for level measurements according to DIN 45666 and ISO 2954. Values of onlyone input channel can be displayed. The Vibration Meter graph may be divided into four areas: three partsto display acceleration, vibration velocity, displacement and a fourth to display the current filter settings anda bar display for the three main values. Figure 5.2 shows also a vibration meter graph.

Figure 5.2: Parameters Vibration Meter graph

Value Description

arms RMS acceleration.

aeq Equivalent continuous RMS acceleration (over the entire measurement duration).

amax Maximum of arms.

apeak(t) Acceleration peak within the last averaging period.


5 VIBRATION METER

Value Description

apeak Acceleration peak for the entire measuring period.

vrms RMS value of the vibration velocity.

veq Equivalent continuous RMS value of the vibration velocity (for the entire measuring period).

vmax Maximum of vrms.

vpeak(t) Vibration velocity peak in the last averaging period.

vpeak Vibration velocity peak for the entire measuring period.

drms RMS value of the displacement.

deq Equivalent continuous RMS value of the displacement (for the entire measuring period).

dmax Maximum of drms.

dpeak(t) Displacement peak in the last averaging period.

dpeak Displacement peak for the entire measuring period.

Table 5.2: Vibration Meter values

The parameters for the Vibration Meter Graph are shown in the setup window in figure 5.2) and they aredescribed in the following table (5.3).


Channel displayed Select Vibration Meter channel for display.

Accel. (Veloc. or Dist.) 1 Select the level to be displayed as #1.



Accel. (Veloc. or Dist.) Font Select the font for the level display.

Accel. (Veloc. or Dist.) Color Select the colour for the level display.

Accel. (Veloc. or Dist.) U Select the unit for the level display.

Update rate Select the time interval for the level update.

CHx Font Select the font for filter settings display.

CHx Color Select the colour for the filter settings display.

Table 5.3: Parameters Vibration Meter


6 Signal GeneratorThis option provides four independently operating signal generators, which can produce various shapes of Signal-

generator

signals. The option is applied for measurement tasks which require particular signal shapes (e.g. buildingacoustics or the control of shakers). The signals produced by the generators are provided via the four outputchannels of the measurement hardware as electrical signals in the range of ±3.16 V. Pink and white noise(full bandwidth or band-limited) as well as sine-sweep (for reverberation time measurements) are providedin the SAMURAI basis functionality.

This option includes the signal shapes: sine, rectangle, triangle, impulse, multi-sine, logarithmic and linearsine-sweep as well as pseudo-random noise. Furthermore, .WAV files may also be output. It is also possibleto use the output channels to provide a DC representation of the level values. A graphical preview shows thesignals as well as the signal FFT resulting with the application of various FFT windows. The preview allowsthe effects of the FFT window to be assessed.

6.1 Technical Data

• Resolution: 16 Bit

• Maximum output voltage ± 3.16 Vpp

• Frequency range: DC . . . 20 kHz (HARMONIE-Family), DC . . . 40 kHz (APOLLO-Family)

• Software

– Four independently configurable signal generators (Two for the APOLLO-Family)

– Synchronizable with the FFT analysis

– Signal shapes: sine, rectangle, triangle, impulse, multi-sine, logarithmic and linear sine-sweepas well as pseudo-random noise

– Output of WAV files

– Output of levels as proportional DC signal

– Signal preview with spectrum

6.1.1 Sine, Square and Triangle signals

These signals are included in the Signal Generator option. The window to configure these signals is shownin figure 6.1 The parameters are described in table 6.1.

Figure 6.1: Sine - Signal generator


6 SIGNAL GENERATOR


Initial delay Time in seconds to delay the signal generation.

Frequency Frequency of the generated signal.

Amplitude Amplitude of the signal (normalized to 1).

Mode There are three modes for generation: Continuous, Burst Repeat, Burst Single.

Cycle count If bursts are generated, this parameter specifies the number of periods of the defined frequency in oneburst (burst length).

Interval time Time between two bursts in seconds.

Filter This parameter is only available if generating noise. Using this parameter SAMURAI is able to generatea band-limited noise. Possible values for this parameter are: no, Low pass, High pass, Band pass,Third octave, Octave

High pass/Low passfrequency

The two parameters define the cut-off frequencies for the corresponding filters. The parameters areonly available for noise generators.

Third octave/Octaveband

This parameter is only available when generating white or pink noise and when ’Third octave’ or’Octave’ have been selected for the parameter Filter. The parameter defines which third octave oroctave band is filtered.

FFT synchronization En-/Disable synchronization with a FFT channel. If the synchronization is enabled, the frequency ofthe signal is a multiple of the frequency step width of the FFT. The Interval time is the same as theFFT block length.

Duty cycle The ratio in percent of the high level time and the low level time for the square signal.

Shape Select from three available triangle signal shapes: Triangle, Sawtooth downward and Sawtoothupward

Table 6.1: Parameters - Signal Generator

6.1.2 Multi-Sine, Sweep linear and logarithmic

These signals are included in the Signal Generator option. A Multi-Sine signal is merged from several sinesignals. All merged sine signals lie within a defined frequency band. The frequencies of all sine signalsare equidistant (select using parameter Delta frequency). The setup window is shown in figure 6.2. Theparameters are described in table 6.2.

Figure 6.2: Multi-Sine - Signal generator

The parameters for the multi-sine signal are similar to those of the swept sine (Sweep). Only the time isadded in which the signal sweeps the defined frequency range in the selected linear or logarithmic mode.


6.1 Technical Data



Start frequency Lower frequency of the generated signal.

Stop frequency Upper frequency of the generated signal.


Delta frequency Frequency step between the individual frequencies of the multi-sine signal.

Sweep length Time in seconds to sweep from the start frequency to the stop frequency.

Table 6.2: Parameters for Multi-Sine, Sweep linear and logarithmic

6.1.3 Pseudo-Random

This signal type is included in the Signal Generator option. Pseudo-Random means that in this signal gen-erator a data block consists of n samples of a noise signal (white noise, see paragraph ??). The block isrepeated continuously. The signal type is characterized by an equipartition of energy over the frequency,similar to white noise, but with a random phase of each frequency.

The periodic pseudo-random signal is generated as follows. The data frame of white noise is repeated ktimes and after that a new data frame is calculated. The configuration window for the pseudo-random signalis shown in figure 6.3. The parameters are described in table 6.3.

Figure 6.3: Pseudo random - Signal generator




Frame size n samples per data frame (see above).

Periodic pseudo-random (Un-)Check this box to (dis-)enable the periodic pseudo-random signal.

Repeat count k repetitions of the data frame.

FFT synchronization En-/Disable synchronization with a FFT channel. If synchronizing, the data frame length dependson the corresponding FFT.

Table 6.3: Parameters for Pseudo-Random Signal


6 SIGNAL GENERATOR

6.1.4 Impulse

This signal type is included in the Signal Generator option. With the parameter Impulse width you candefine how many samples the impulse shall contain. Contrary to the above sections, the only available burstmode is (Single, Repeat). The parameter polarity defines whether the generated impulse is positive, neg-ative or alternates. The remaining parameters are described in table 6.1.

Figure 6.4: Impulse signal - Signal generator

6.1.5 User defined

This signal type is included in the Signal Generator option. With this function you can generate various signaltypes at the analyzer output. You have to provide a WAV file containing the desired signal. The files musthave mono or stereo Windows PCM format with 8 bit or 16 bit and a sample rate of 51.2 kHz (or 102.4 kHzif the audio bandwidth is 40 kHz).

Figure 6.5: User defined signal - Signal generator


7 Fractional OctavesThe aim of a spectral analysis is the investigation of a signal with regard to its components in various fre- fractional

Octaves

quency bands, whereby the bands each have the same absolute (narrow-band analysis) or relative (octave-band analysis) width as appropriate depending upon the task to be performed. The octave-band analysiscorresponds to the human tonal perception, e.g. the sequence of half-tone steps on a piano is comparablewith the 1/12-octave-band analysis, which in turn is a refinement of the 1/3-octave-band analysis. A furtherreason for the use of an octave-band analysis rather than a narrow-band analysis is that the former tends tooffer a better frequency resolution at lower frequencies.

This option allows the spectral investigation of the activated channels in 1/1, 1/3, 1/6, 1/12 and 1/24 octaves,whereby the octave resolution can be selected on a per-channel basis. The central frequency of the highestfrequency band corresponds to the audio/FFT bandwidth chosen in the setup. The lowest frequency band is11 octaves below the highest. The octave spectra stored are calculated with averaging and/or time-weighting(FAST, SLOW, Exp.) from the sequence of "raw" octave spectra. The frequency resolution of octave spectraat low frequencies is inherently high. In order to achieve such high resolution with an FFT, a high number oflines would have to be chosen; however, this might then be at the cost of a lower time resolution.

The spectra can be displayed in spectral (bar/contour/line) graphs, sonograms and waterfall graphs. Thetime course of frequency bands can be shown in a time history graph.

7.1 Technical Data

• Accuracy: according IEC 61260 / IEC 1260 class 0

• Measurement range : 0.01 Hz bis 40 kHz je nach Audio/FFT-Bandbreite

• Softwareumfang:

– Extension of the analysis with digital filters of constant relative bandwidth at resolutions of1/1, 1/3, 1/6, 1/12, 1/24, 1/48 octaves up to 51.2 kHz

– Up to 1600 spectra per second for the analysis in 1/3, 1/6 and 1/12 octaves, for all measurementchannels

– Possibility for simultaneous analysis of 1/3 octaves, 1/n octaves and FFT

– Simultaneous display of momentary, max, min and Leq spectra

7.2 Analysis: Fractional octaves

The fractional octaves are calculated by the PC and therefore depend on the audio bandwidth set belowMain channels. The upper band depends on the currently selected audio bandwidth. The lower band al-ways is 10 octaves lower.

You may open the configuration window for the fractional octaves by double-clicking on the desired first levelitem in the setup window tree. Apart from Octave band the parameters correspond to those for the 1/3octaves. This parameter defines which fractional octaves are calculated.


8 TCP SERVER

8 TCP ServerThis interface allows external programs to configure and operate SAMURAI and to receive measurementTCP

Server

data from SAMURAI via the TCP/IP network protocol. This option enables the remote control of SAMURAIby a client program via a network. The interface permits the transfer of commands, status messages andmeasurement data via the TCP/IP network protocol. Because timestamps are included in the measurementdata, client programs have the possibility to synchronize data from several measurement devices upon whichSAMURAI is installed.

8.1 Technical Data

• Measurement data transfer via TCP/IP

• Description of the communications interface

• Access control via password allocation

Open the setup window (figure 8.1) for the TCP server by clicking on Tools -> TCP Server in the main menu.Click on the buttons Start server and Stop server to start/stop The TCP server.

Figure 8.1: Setup window TCP/IP Server


Port to listen to The port used for communication.

Limited access password Password for requesting data only.

Full access password Password for requesting data and operating SAMURAI by remote control.

Start the server automatically If this box is checked, the TCP server is started automatically on program start.

Disconnect automaticallyafter n min of inactivity

Define when the connection with a client programme is cancelled. This parameter is importantif a network connection was cancelled by accident (e. g. wireless LAN).

Max. simultaneous connections Maximum number of simultaneous connections to client programmes.

Table 8.1: Parameter TCP/IP server


9 FRF / Cross AnalysisIn acoustic and other oscillatory processes, relations between signals of different origins are often of interest FRF

Option

(e.g. coherence of two signals, relationship between excitation and response of a structure). A central rôle isplayed by the determination of the frequency-dependent transfer function (or Frequency Response Function,FRF) as well as related values which are all calculated from the FFTs of the signals. This option is appliede.g. when measures are to be taken for vibration damping or noise reduction by a targeted influencing of thevibration transfer.

This option includes two analysis alternatives: the investigation of two quasi-stationary signals or the analysisof structures via impulse excitation (using accelerometers and an impulse hammer). For impulse excitation,the software supports the organization of the measurement points on a linear or planar grid. The visualizationof the oscillation modes is not included in this option; however, the measurement data can be imported intothe ME’scope software.

9.1 Technical Data

• Bandwidth, number of lines, windowing and averaging mode selectable

• Configurable exponential window for force excitation

• Simultaneous calculation of the transfer values between arbitrarily selectable pairs of channels (e.g.Ch2 versus Ch1, Ch3 versus Ch1, Ch3 versus Ch2)

• Values calculated: autospectrum reference/response, coherence and Coherent Output Power, transferfunctions (H1, H2, 1/H1 and 1/H2),

• cross-correlation and cross-spectrum, impulse response, autocorrelation reference/response, Cep-strum reference/response

• Display of complex values as either Amplitude / Phase / Nyquist or Real / Imaginary / Nyquist

• Operator guidance via an intuitive graphical user interface for the whole measurement process

• Instructions and overload notification via speech output

• Export to ME’scope (Vibrant) via UFF, Excel, NWWin

9.2 Masuring mode: Impact response

This mode is used for vibration measurements in which solid bodies are examined using an impulse hammerto excite a body at different points on one plane.


Trigger Specify the trigger which shall be used for starting data acquisition.

Number ofnodes

For the next two parameters (Horiz. and Vert.) enter the number of grid lines for the definition of the excitationnodes.

Row, column Select one of the buttons to either arrange the nodes in rows or in columns.

D->U Switch between upward and downward arrangement of the nodes.

R->L Switch between left-to-right and right-to-left arrangement of the nodes.

Z->S Switch between row-/column-wise or zigzag arrangement of the nodes.

Table 9.1: Measurement setup - Impact response

NOTICE! Currently only rectangular geometries are supported!


9 FRF / CROSS ANALYSIS

ATTENTION! Due to the data of a measurement in this mode consisting of single records,the automatic export of the data is not available!

Figure 9.1: Measurement setup window - Impact response

9.2.1 Impact response measurements - Step by step

To perform an impact response measurement follow the instructions below:

1. Specify the number of measuring points as well as the reference and response measuring points.

2. Start SAMURAI and click on ON/OFF in the Main toolbar to connect the analyzer.

3. Click on NEW to configure a new measurement. Select the measuring mode “Impact response”.

4. In the setup window for the impact response measurement (figure 9.1) enter the number of nodes youalready defined using the parameters Horz. and Vert..

5. Also set the following parameters in this window: The Trigger for the data recording and the numberingof the measuring points using the corresponding buttons on the right. Confirm your settings by clickingon the OK button.

6. Open the setup window for the signal level trigger and define the desired settings.

7. Define the settings for the desired transfer function under Analysis -> Cross Analysis (section 9.3and figure 9.4).

8. Set the graphical display of the measured data (section 9.4).

9. Start the measurement by clicking on the RUN button.

10. In the window “Impact control center” you are guided through the measurement. The current excitationpoint is displayed as blinking circle (figure 9.2). In addition several instructions and notes are givenacoustically:

Overload Issued if an overload occurred at one of the main channels.


9.3 Analysis: Cross Analysis

Trigger Issued if the trigger condition for the data recording is fulfilled and the data was collected.

Next Point Instructs you to excite/record on the next point of the system.

Stop Signals the end of a measurement.

Figure 9.2: Impact control center - Impact response

At each measuring point data recording is repeated several times (corresponding to the number ofaverages specified in the window in fig.: 9.4).

11. The measurement is finished when the corresponding number of averages has been recorded. Nowyou can recall, display or export the measured data in the Replay mode.

9.3 Analysis: Cross Analysis

Figure 9.3: Parameter Cross-Analysis Figure 9.4: Parameter Cross-Analysis in mode "‘Impact response"’

SAMURAI calculates the cross analysis data from the decimated time data coming from the analyzer. Thefollowing values are calculated: auto spectrum, coherence, cross spectrum, transfer function (FRF H1, 1/H1or FRF H2, 1/H2), cross correlation, auto correlation and cepstrum (complex).



Due to the complexity of the parameters for this analysis option they are not displayed in the window for theremaining analysis options and their parameters. Therefore, SAMURAI generally has two different windowscontaining the options for the cross analysis. One window (see figure 9.3) is used for the common recordingmodes and the other window (see figure 9.4) for the measuring mode “Impact response” (section 9.2). Theparameters of this window are described in the following table 9.2.


Enable Cross Analysis En-/Disable cross analysis.

Force/Exponential win-dow

Clicking on this button will open a window in which you can define separate window functions for the ex-citation channel (force) and the receiving channel (exponential) (section 9.3.1). This may be necessaryif you want to use a modal hammer for the excitation of the analysed system.

FFT spectrum / Averag-ing / Delta time

This parameter has one value more than the standard FFT window options (Force/Exponential Win-dow).

Cross analysis chan-nels

A list of cross analysis channels is established. The data of two input channels are always used for thecross analysis and form one “Cross Analysis Channel”.

Add, Modify,Remove

With these buttons you may add, modify or remove a cross analysis channel. The dialog window foradding, modifying or removing a channel is self-explaining and is not described in detail. You may selectseveral response channels at a time to create several cross analysis channels simultaneously.

Table 9.2: Parameters Cross Analysis

The parameters for the cross analysis in the measuring mode “Impact response” (figure 9.4) are describedin table 9.3.


Number of lines Number of the spectral lines for the calculation of the cross analysis (e. g. number of lines crossspectrum).

Window (table 9.2).

Average count Number of linear averages per measuring position.

Force/Exponential Window (table 9.2).

Excitation channel Only one input channel can be defined as measuring channel for the excitation signal. All re-maining channels can be defined as measuring channels for the impact response.

Roving mode SAMURAI generally supports two data recording methods.

Move reference: In this method a vibration sensor for one or more response channels is at-tached to the examined object (at the nodes of the grid) and the excitation occurs at theindividual measuring points (also at the nodes of the grid using a modal hammer).

Move response: In this method the excitation always occurs at the same place of the examinedobject and the vibration sensor of the response channel moves from measuring positionn to measuring position n+ 1.

Use triaxialaccelerometers

If at least three response channels are used, the use of a triaxial vibration sensor for the mea-surement is possible. In this case three successive channels are always united to one responsechannel.

Sequence definition These parameters define the sequence of the measuring points during the measurement. Theparameters are self-explaining and not further described.

Table 9.3: Parameters Cross Analysis in the measuring mode “Impact response”

NOTICE! You can manually change the value for the excitation direction for eachmeasuring channel in the list.

9.3.1 Force/Exponential window

This window is used to set special functions controlling the windowing of the measured data in the timedomain for the cross analysis. Two windows are defined: one for the excitation signal (in most cases amodal hammer as Force sensor) and one for the recorded impact responses (Exponential).


9.4 Cross Analysis graph

Figure 9.5: Force/Exponential window


Start Defines when the values in the windows for Force and Exponential are no longer zero.

Stop Defines when the values in the window for Force are zero again. For the Exponential windowthis parameter defines when the exponential decrease of the window starts.

Transition At the increase/decrease from zero to one the increases can be interpolated with a cosine func-tion. This parameter defines the width of the transition.

Exp. Stop Defines when the values for the Exponential window are zero again.

Units Defines the displayed unit for the dialogue window.

Exponential coefficient Defines the coefficient for the exponential decrease of the Exponential window.Table 9.4: Parameters for the window function

You may also change some of the parameters by dragging with the mouse. The assignment is shown in thefollowing table 9.5. You may change the parameter Exponential coefficient, for example, by dragging thedecreasing edge of the exponential curve with the mouse.

Element Window Parameter

red triangle apex up Force Start

red triangle apex down Force Stop

blue triangle apex up Exponential Start

blue triangle apex down Exponential Stop

blue rectangle Exponential Exp. StopTable 9.5: Assignment of graphical elements and parameters for the window function

9.4 Cross Analysis graph

This graph is used to display e. g. cross spectra, transfer functions etc. and is only available with the ”CrossAnalysis” option. It is possible to display several traces at the same time provided that the same function isdisplayed for all measured data (e. g. a cross correlation of CH2 vs. CH1 and CH3 vs. CH1). Thereforeyou may only set this function for the first displayed trace with the parameter Complex mode.

NOTICE! It is not possible to use this graph for values from the Cross Analysis optionwhich have only one real component (auto spectrum, coherence etc.). Forthose you must use a spectrum graph.



To enable data display with this graph you must enable the “Cross Analysis” (section 9.3).

Figure 9.6: Example for a cross analysis graph

Figure 9.7: Parameters - Cross analysis graph

The parameters for the cross analysis graph are similar to those of the spectrum graph. There is only oneadditional parameter Complex mode that defines which data from the cross analysis is displayed. Thefollowing settings are available for this parameter: cross spectrum, FRF H1, FRF H2, cross correlation,impact response, FRF 1/H1, FRF 1/H2, auto correlation reference, auto correlation response, cepstrumreference, cepstrum response.

Figure 9.8: Display options - Cross-Analysis-Graph


9.5 Sound level trigger

The following parameters are available within the display options (see figure 9.8):


Complex mode Select whether the measured data is displayed as real and imaginary component or as magnitudeand phase.

Layout mode Select which data is displayed and in which way (Nyquist).

Graph subdivision Select how much space the individual partial graphs can take (e. g. when displaying Magnitude+ Phase + Nyquist). The parameters Horizontal and Vertical define the horizontal and verticalsubdivisions.

Phase unit Select radian or degree for phase display.

Range Select the display range for phase (±π,±π2

. . . or ±180◦, ±90◦. . . ).

Table 9.6: Parameters display options

9.5 Sound level trigger

The Sound level trigger allows triggering at a certain excitation of a measuring channel. The trigger is onlyavailable in the measuring mode "Impulse response".

Figure 9.9: Trigger setup - Sound level trigger


Input channel Define the input channel used for the triggering.

Level Define the percentage of the excitation level which must be exceeded or undercut to fulfil the triggercondition.

Slope The trigger condition may be fulfilled at a positive excitation level, at a negative excitation level or inboth cases.

Start Offset Define the start offset in ms after which the trigger is activated.

Table 9.7: Parameters trigger setup - Sound level trigger


10 ORDER ANALYSIS

10 Order AnalysisOrder Analysis is an established technique for the investigation of vibration events and noise emissions inOrder-

analysis

relation to rotating machines or equipment. In contrast to the FFT, not the level at a given frequency (FFTspectrum) but instead the level at a multiple or fraction of the basic rotational speed (order spectrum) is ofinterest here. For example, this technique can be used to locate gearbox damage. This option calculatesorder spectra based upon FFT analysis of the time signal together with the rotational speed information. TheHARMONIE-Family or APOLLO-Family of devices (e.g. the Soundbook MK2 or Soundbook MK1) offers twotachometer channels for this purpose.

10.1 Technical Data

• Real-time calculation of the order spectrum

• 10 to 400 order lines; resolution 1, 1/2, 1/4, 1/8, 1/10

• Display of order spectra in spectrum graphs as well as in sonograms and waterfall diagrams (againsttime or rotational speed); progressive display of a selected order (against time or rotational speed) inhistory graph

• Use of two tachometer references

• In parallel the standard analyses in SAMURAI are available (sound level meter, 1/3 octave, FFT,rotational speed)

• Export to Excel, TXT, UFF and NWWin

10.2 Measuring mode: Delta Tacho

In this mode the measuring results are not stored after defined time intervals, but after a defined change ofspeed. Thus an engine start phase might be examined closer for example.

Figure 10.1: Measurement setup window - Delta Tacho


10.3 Analysis: Order (from FFT)


Tacho select Select the tachometer (tacho) input to be used for determining the storage intervals.

Mode Define whether you want to measure a Run Up, Run Down or both.

Lower limit Enter the speed at which data acquisition is started.

Upper limit Enter the speed at which data acquisition ends.

Delta Tacho This parameter defines the speed increment which has to be exceeded before new data are stored.

Table 10.1: Measurement setup - Delta Tacho

10.3 Analysis: Order (from FFT)

Order tracking is used to calculate and display spectrums versus the orders of a base frequency (in mostcases RPM/speed). The configuration window is shown in figure 14.1. The parameters are described intable 6.3.

Figure 10.2: Setup order tracking


Enable En-/disable order tracking for the corresponding channel.

Resolution Order or frequency resolution of the spectrum. The unit for this parameter is the order.

Tacho select Defines which tachometer channel is used for measuring the base frequency.

Table 10.2: Parameters - Order analysis setup

NOTICE! Before you can open the setup window, you must enable at least onetachometer channel.

NOTICE! If you want to display an order spectrum (see paragraph 10.3) in a spectrumgraph, you must select an order spectrum as the first trace in the graph.As a consequence, all further traces in this graph must be order spectra,because the abscissa displays the order and not the frequency for thesetraces.


11 BUILDING ACOUSTICS

11 Building AcousticsThe field of building acoustics deals amongst other things with the acoustical properties of rooms, dividingBuilding-

acoustic

walls, structural elements and building materials. The determination of airborne and impact sound insulationis of particular importance. The SAMURAI option: BUILDING ACOUSTICS (SAMBA) allows the convenientperformance of building acoustics measurements according to the standards listed below. Apart from re-verberation time measurements (already included in the basic scope of SAMURAI), this option allows thesource, receiving and background noise spectra to be determined. The organization of the rooms and trans-mission paths together with measurement, analysis and report functions are integrated into a cohesive andclear user interface. The excitation can be performed with noise, impulse or sine sweep signals.

11.1 Technical Data

• implemented Standards:

– ISO-140-3,4,5,6,7,8

– ISO-717

– ISO 354

– ISO-3382

– ASTM-standards

• Measurement range: 50 Hz bis 5 kHz

• Software:

– Clear navigation including status display

– Management of source/receiving rooms and transmission paths

– Management of additional information such as manufacturer, operator, company, address, de-scription, building structure volumes, areas etc.

– Selectable frequency ranges 100 . . . 3150 Hz or 50 . . . 5000 Hz

– Measurement of reverberation time spectra EDT, RT15, RT20, RT30; automatic or manual fittingof linear approximations to level decay curves, backward integration selectable

– Averaging of results from selected positions and measurements

– Standards integrated:

∗ ISO 140-3 (Laboratory measurements, airborne sound insulation of building elements)

∗ ISO 140-4 (Field measurements, airborne sound insulation between rooms)

∗ ISO 140-5 (Field measurements, airborne sound insulation of facades)

∗ ISO 140-6 (Laboratory measurements, impact sound insulation of floors)

∗ ISO 140-7 (Field measurements, impact sound insulation of floors)

∗ ISO 140-8 (Laboratory measurements, reduction of transmitted impact noise by floor cover-ings)

∗ ISO 140-12 (Laboratory measurements, room-to-room airborne and impact sound insula-tion)

∗ ISO 717-1 (Rating, airborne sound insulation)

∗ ISO 717-2 (Rating, impact sound insulation)

∗ ISO 3382 (Measurements, reverberation time of rooms)

∗ DIN 4109 (Requirements and testing, sound insulation in buildings)


11.1 Technical Data

∗ DIN 4109-10 (Recommendations, enhanced sound insulation in apartments)

– Usage of internal or external signal generators

– Flexible creation of measurement reports according to standards

– Export and printing of the results

Figure 11.1: Example measurement according to ISO 140-4

Figure 11.2: Report according to ISO 140-4


12 SOUND INTENSITY 1

12 Sound Intensity 1When investigating acoustic emission and propagation processes, the direction- and frequency-dependentSound-

intensity 1

energy flow of a sound field is of interest and is described by the sound intensity (energy per area and time,unit W/m2). Sound intensity measurements are made e.g. for locating sound sources or to determine thesound power emitted from a surface. Determining the sound power by means of intensity measurementsrather than by methods based only on sound pressure measurements brings advantages e.g. in the sup-pression of extraneous sound sources.

Based upon the two microphone signals from a sound intensity probe, this option calculates the sound inten-sity at the position of the probe in the axial direction of the microphones. The frequency-dependent intensitythus calculated is displayed in third-octave bands or constant-width bands (the number of lines is selectable).By rotating the probe, the direction of maximum intensity can be found. Furthermore, for stationary noisesources it is possible to use a scanning method to determine the sound power emitted from a defined surface.

The procedure implemented for determining the sound intensity is based upon analysis of the phase dif-ferences resulting e.g. from different paths between the sound source and the two microphones. For thisreason, high demands are made upon the microphone pair in the probe. The software allows the measure-ment chain to be calibrated with regard to both pressure and phase.

12.1 Technical Data

• implemented Standards: IEC 61043 class 1, ISO 9614-1, 9614-2, 9614-3, ECMA-160, ANSI-S12-12

• Sensors: Intensity probes

• Measurement range: 20 Hz to 10 kHz, depending on spacer

• Software:

– Sound pressure-, intensity- and power-spectrum, P-I Index + Phase, particle velocity, acousticalimpedance and cross-spectrum.

– Display in third-octave bands or constant-width bands

– Display of the work-area

– Pressure and phase calibration; pressure-residual intensity determination for the measurementsystem

– Partial sound power determination according to ISO 9614-1, 9614-2, 9614-3, ECMA-160 andANSI-S12-12 over a defined surface

– Export to Excel, TXT, UFF and NWWin

– Option can be used via the SOUND INTENSITY 2 option, which allows custom applications toaccess SOUND INTENSITY 1

12.1.1 Phase calibration for sound intensity probes

When using a sound intensity probe it will not suffice to calibrate the amplitude only. It is also necessaryto determine and correct the phase relation of the microphones. For this special calibrators are used (f.e.51AB from G.R.A.S.). These calibrators have a casing enclosing a speaker at the centre which is fed withan external signal. The casing has two apertures for the microphones which have to be calibrated.

NOTICE! SAMURAI allows to use the analogue outputs of the analyzer for excitation.


12.1 Technical Data

Start a phase calibration by selecting the point Phase Calibration from the context menu on the setup tab.

NOTICE! Please note that this menu option is only available for the measuring modesSound Intensity Standard and Sound Intensity Autostore. Accordingly,only these two modes include the transducer type Sound Intensity Probe.

The window for the phase calibration (figure 12.1) is divided into two sections. In the upper section you willonly find passive elements stating some details for the selected probe from the transducer database. Thecontrols in the lower section are used for the calibration. A detailed description of the elements and controlsin the phase calibration window is given in table 12.1.

Figure 12.1: Phase calibration window

Element DescriptionThird octave If this button is pressed, the phase is displayed in third octaves.

FFT If this button is pressed, the phase is displayed as FFT spectrum.

Internal Signal Generator(OUT1)

This parameter defines how the signal generator of SAMURAI is used. Possible settings are none,White noise and Pink noise.

Phase Amplitude This control is used to set the y-axis scaling for the graph in this window.

Temperature Enter the current ambient temperature.

Pressure Enter the current atmospheric pressure.

Start/StopPhase Calibration

Use these two buttons to start/stop the phase calibration.

Start/StopP-I Measurement

Use these buttons to start/stop the residual intensity measurement.

Table 12.1: Window “Phase Calibration”

NOTICE! During calibration the graph in the window shown in figure 12.1 displaysthe P-I values in the upper part and the phase characteristic below. Duringa P-I measurement the corrected phase characteristic is displayed.



12.2 Measuring modes: Sound Intensity Standard and Auto-Store

The modes for measuring sound intensity only differ from the general measuring modes Standard and Auto-Store in grouping two input channels for one sound intensity probe, thus restricting the number of availablechannels. Furthermore, sound power values may only be calculated in the sound intensity modes.

Figure 12.2: Measurement setup window - Sound Intensity Standard

12.3 Analysis: Sound Intensity

The sound intensity calculation in SAMURAI is done only in the two measurement modes Sound IntensityStandard and Sound Intensity Autostore (section 12.2) and requires the Sound Intensity option. If one ofthe measurement modes is selected when creating a new measurement, the menu entry Sound Intensityunder Analysis is available. Double-clicking on the menu entry will open the window shown in figure 12.3.

Figure 12.3: Setup sound intensity analysis


12.4 Sound Intensity graph

The elements and parameters are shown in figure 12.3 and described in table 12.2.

Control Description

Lower/Upper third Use this parameter to limit the frequency range for this analysis.

Length Spacer Enter the length of the used spacer. This parameter influences the available frequency range(parameter Lower/Upper third).

Temperature Enter the current ambient temperature.

Pressure Enter the current atmospheric pressure.

Element surface Enter the area of the separating element.

Extended options... Opens a window in which various corrections according to ISO 9614 may be entered.

Table 12.2: Analysis setup Sound Intensity

12.4 Sound Intensity graph

This graph allows you to display the results from the Sound Intensity analysis (see paragraph 12.3) asthird octave spectrum (see fig. 12.4) or as FFT spectrum (see fig. 12.5) . The graph contains the soundpressure levels and the sound intensity measured with the sound intensity probe. The sound pressure levelis displayed in both directions, because it is independent of any direction (in fig. 12.5 displayed in green).The sound intensity is displayed directionally (positive up, negative down) (in fig. 12.5 displayed in blue).The setup window for the sound intensity graph is shown in figure 12.6 .

Figure 12.4: Sound intensity graph - third octaves

Figure 12.5: Sound intensity graph - FFT



Figure 12.6: Parameters - Sound intensity graph

The parameters in figure 12.6 are described in the following table.


Result displayed Select the source channel for the values.

Intensity value displayed Select the intensity value to be displayed in the graph.

Weight Select the weighting trace in the frequency domain. Several traces (e.g. A and C) are alreadyprovided, but it is possible to add new traces. The format is the same as in NWWin.

Function Several mathematic functions are available for processing data.

Phase unit Select the unit displayed for the phase (Radiant or Degree).

Phase scal. The phase scaling for the display entered here shall have a value between −π and +π. Iflarger/smaller values are entered, the value is recalculated according to x mod π .

Use “Bipolar” representationwhen available

Enable “Bipolar” representation. The positive or negative direction of the values is displayed incolour.

Show pressure trace En-/Disable display of the measured sound pressure (average of both probe microphones).

Table 12.3: Display options sound intensity graph

Use the buttons below the checkbox Show pressure trace to adjust the representation of the individualtraces (colour or pen).


13 Building VibrationBuilding-vibration

For construction works in cities and industrial areas, immission control with regard to the vibration caused isof considerable importance. The high building density has as a result that people in housing and office build-ings are affected increasingly often by vibration events in their vicinity. Furthermore, for construction works,industrial production and blasting, the effects on existing buildings and structures must be investigated. Thisprimarily involves the evaluation of the vibration with respect to the endangerment of buildings and structures.

This option allows the measurement and analysis of building vibration according to DIN 4150 for the purposeof the evaluation of its effects upon buildings and structures as well as people within them. Upon the oc-currence of vibration, a marker is set in a vibrational velocity / frequency diagram at the position determinedby the relevant frequency and the maximum velocity from the three axes. The guideline values for vibra-tional velocity in foundations of commercial buildings, housing and protected historical monuments are alsoshown graphically in the diagram. Thus, already during the course of the measurement the distribution ofthe markers shows whether and how often the threshold values for the relevant building type were exceeded.

For evaluating the effects of vibration upon people in buildings, the option provides the takt-maximal value(maximum level in consecutive time intervals) of the frequency-weighted vibration signal, KB(t). The length ofthe time intervals is freely selectable. The BUILDING VIBRATION option, in conjunction with our portable androbust Soundbook measurement system and the ICP seismometer developed especially for this application,is a handy and convenient solution for measurement, analysis and evaluation of building vibration.

13.1 Technical Data

• implemented Standards: DIN 4150 Part 2/3, UNI – 9916, DIN 45669

• SINUS 3D Seismometer or other vibrational velocity sensors

• SINUS 3D Seismometer: 1 – 80 Hz (order no. 902220.3)

• Software:

– DIN 4150-2 Human exposure to vibration in buildings

– DIN 4150-3 Effects of vibration on structures

– Graphical representation of guideline values for vibrational velocity in foundations (commercialbuildings, housing and protected historical monuments)

– Time signal, FFT, Third-octave and statistical analysis in real-time and simultaneously

– Table for the sequence of vibration events, showing date/time, dominant axis, frequency andlevel

– Export to Excel, text files, UFF and directly to the NWWin software

13.2 Building vibration DIN 4150-2 and DIN 4150-3

This analysis option allows calculating the frequency and velocity of vibrations according to DIN 4150-2 andDIN 4150-3. Figure 13.1 contains the setup window for the building vibration analysis according to DIN 4150-2. The parameter Takt Length is used to set the length of one cycle for the calculation of the Taktmaximalvalue.


13 BUILDING VIBRATION

Figure 13.1: Setup building vibration according to DIN4150-2

Figure 13.2: Setup buildingvibration according to DIN 4150-3

The parameters of figure 13.2 are described in table 13.1.


Enable En-/Disable the building vibration analysis with the checkbox.

Threshold Threshold for the vibration acceleration which has to be exceeded to start the calculation of thespectra.

Number of lines Number of lines for calculating the FFT spectra.

x-axis, y-axis,z-axis

Assignment of channels to directions.

Velocity signal En-/Disable velocity signal acquisition.

Event FFT For documenting the measurement it is necessary to store the FFT events occasionally. En-/Disable the acquisition with this checkbox.

Table 13.1: Analysis setup building vibration DIN 4150-3

13.2.1 Analysis principles according to DIN 4150-3

The particle velocity is measured for all three spatial directions (for uniaxial transducers only one direction).If the vibration speed exceeds the threshold defined for one axis, the data for this axis are recorded and usedas basis for the calculation of the FFT spectrum. The spectrum is used to determine the frequency of thelargest partial vibration. These results represent all information necessary to display the values accordingto DIN 4150-3 (see also paragraph 13.3). We recommend the following SAMURAI setup for measurementsaccording to DIN 4150-3:

Input coupling: ACInput filter: none1 Hz high pass (Soundbook MK1 and HARMONIE): off

Audio bandwidth Number of FFT lines lower measurable frequency in Hz

312.5 Hz 101 6.25

201 3.12

401 1.56

801 0.78

1601 0.39

3201 0.19

156.25 Hz 101 3.12

201 1.56

401 0.78

801 0.39


13.3 Building Vibration graph

Audio bandwidth Number of FFT lines lower measurable frequency in Hz

1601 0.19

3201 0.1

78.125 Hz 101 1.56

201 0.78

401 0.39

801 0.19

1601 0.1

3201 0.05

Table 13.2: Recommended settings for DIN 4150-3

13.3 Building Vibration graph

The results from the Taktmaximal calculation according to DIN 4150-2 may be displayed in a history graphor a vsXRef graph. For the values calculated according to DIN 4150-3 a separate representation is available(figure 13.3). This graph contains the measured frequency on the vertical axis and the particle velocityamplitude on the horizontal axis (Ppv =̂ Peak particle velocity ; according to DIN 4150-3 vi). For eachspatial direction a certain symbol or colour is used (see parameters in figure 13.4). Due to the calculationbeing only performed when a certain threshold is exceeded (see table 13.1), the measured values are notconnected by lines (for detailed function principles see paragraph 13.2). The resulting graph shows in whichspatial direction the examined element is excited very heavily and by which vibrations.

Figure 13.3: Building vibration graph for the measurement according to DIN 4150-3

You may set the parameters for this graph in the window shown in figure 13.4. The parameters are self-explaining and not further described. The settings below General, x-axis and y-axis comply with the othergraphs. You will find the parameters for the table on the right side of the graph in the window shown in figure13.5.

Figure 13.4: Parameters building vibration graph ISO 4150-3


13 BUILDING VIBRATION

Figure 13.5: Parameters building vibration graph DIN 4150-3


14 Sound Intensity Map14.1 NoiseCam in the measuring mode Sound Intensity Map

Configuring the WebCam in this mode differs from the configuration in other modes. The image for the SoundIntensity Map

measurement is captured here and the automatic position detection for the probe is set. For this, you willneed a special camera with a sensitivity range including the IR range also providing a mount for an IR filterwhich is only translucent for IR light. SINUS Messtechnik GmbH provides this type of camera as an option.The configuration window is shown in figure 14.1.

Figure 14.1: Setup sound intensity map measurement

The top left section of the window contains three tabs for displaying the image. The Live tab shows thedata currently provided by the camera. If you have captured a single image from the video using the buttonCapture single image , it is displayed on the second tab named Single image. Here you may set the size andthe scanning method for the measured surface. On the third tab you may test the automatic localization(path detection) of the probe. During path detection the brightest spot of the image is calculated and thusthe position of the probe is determined while measuring. The following table describes the parameters of thewindow shown in figure 14.1.


Capture settings see table 4.1

Frame rate see table 4.1

Image threshold This threshold is used for path detection and defines the brightness (value 0 to 255) at which a pointis detected. Typical values lie between 200 and 250.

Frame width, Frame length The real width and height of the displayed grid (at the captured object)

Cut image Enable this checkbox if you only want to capture a part of the image. You may select the part in theimage using the mouse or the following four parameters.

Left, Bottom, Width, Height Coordinates for cutting the image.

Grid Enter the vertical and horizontal division of the grid.

Capture single image Click to capture a single image from the NoiseCAM. It will be used during the measurement.

Start capture Starts the sample capture for path detection.

Stop capture Stops the sample capture.

Table 14.1: Parameters in mode Sound Intensity Map


14 SOUND INTENSITY MAP

14.2 Contour graph

The contour graph allows displaying sound intensity and sound pressure maps and is only available withthe “Sound Intensity Map” option. Capturing the image is described in section 14.1. You may display thevalues as iso-lines or as interpolated map in a two-dimensional image. (Figure 14.2 shows an example foran interpolated representation.)

Figure 14.2: Contour Graph

The setup of this graph differs very much from the previously described, because it is not possible to displayseveral events simultaneously and the data are displayed in reference to position. For this reason the buttonsNew trace , Remove trace , Previous and Next are not available. Apart from that, the parameter Bin is availabletwice (for setting the upper and lower frequency band). The remaining parameters are the same as for theother graph types. The parameters for the x- and y-axis are identical and relate to the two spatial directionsrepresenting the measurement plane. Start and Stop are not available; use the parameters Map Widthand Map Height shown in table 14.1. If the box Fixed amplitude from max is checked, the parameterAmplitude defines the displayed dynamic range with reference to the maximum in the measured data.Leave the box unchecked if you want to define the range manually with the parameters Start and Stop. TheColor scale parameter is identical with the sonogram parameter. The settings for the Grid parameter aredescribed in the following table.


Horizontal countVertical count

Number of interpolation steps in direction of the x- or y-axis for the map calculation.

Horizontal count when measuringVertical count when measuring

Number of interpolation steps in direction of the x- or y-axis for the map calculationduring measurement.

Interpolate function Interpolation method.

Multiquadratic g(r) =√r2 + c2

Thin Plate Spline g(r) = (r2 + c2) · ln(r2 + c2)

r is the “Euclid distance”.

Function parameter Parameter c of the interpolate function.

Show capture grid over the image Superimpose the grid set in paragraph 14.1 on the image.

Do not recalc the map during Runtime Check this box to avoid the recalculation of the acoustic map during measurement.

Table 14.2: Contour graph - Grid setup


14.2 Contour graph

Figure 14.3: Contour graph - Positions

Table 14.3 describes the settings for the parameter Positions.


Show positions (Un)Check this box to dis-/enable display for the measuring position.

Symbol Set, Size and List Use these three parameters to set the appearance of a flag at a measuring position.

Show value at position Check this box to display the measured value assigned to the position.

Transparent En-/Disable transparent background for value display.

Value Font Select font and colour for value display.

Background color Select background colour for value display when transparency is disabled.

Relative text position Select the position of the text in relation to the value position.

Table 14.3: Contour graph - Positions

You may also display measured values at the iso-lines. Click on Labels to open the setup. The parametersare self-explaining and not described here. Click on Contour to set the basic appearance of the graph.


Background mode Select image combination to be displayed.

Default Pen Select the pen for the display of the iso-lines.

Select picture . . . Select the picture if none was captured yet with the NoiseCAM.

Picture scale and position Specify the image detail and the position of the measuring area.

Display Select the data for display. Intensity Both Directions, Intensity Up Direction, Intensity DownDirection, Pressure.

Replace color This colour is used to fill areas which do not correspond to the selected direction.

Enable link with spectrum graph cursor Check this box to set the displayed frequency in the contour graph using the cursor from thespectrum graph.

Show the measurement’s path Check this box to fade in the measurement’s path detected with the NoiseCAM.

Path pen Set the appearance of the faded-in measurement’s path.

Table 14.4: Contour graph - Contour


15 POST PROCESSING

15 Post ProcessingThe post processing option of SAMURAI allows the calculation of additional values from measured signals.Post

Processing

SAMURAI is able to process audio data allowing to perform almost all available analysis operations. Atpresent, the supported audio sources are SAMURAI measurements and WAV files. The post processingoption of SAMURAI is a special mode for which no instrument is required. Contrary to the normal dataacquisition operation, the input data are not provided by the analyzer, but are taken from the hard disk. Thisleads to several changes of the tree structure on the setup tab.

• Main channels is the only item below Hardware.

• You may not calibrate the input channels.

• You may not select transducers since the information is taken from the SAMURAI measurement.

15.1 Post Processing - Step by step

To post-process audio data follow the instructions below:

• Start SAMURAI.

• Click on .

• Add at least one post processing channel as described above in paragraph 15.1.1.

• Select the desired period using the cursor of the window shown in figure 15.1.

• Set the analysis operations in the setup tab (analogous to an analyzer measurement).

• Set the graphic options.

• Click on . The post processing is started and a new measurement is created containing the newdata.

15.1.1 Adding post processing channels

Click on in the main toolbar to switch to the post processing mode. A window (see 15.1) will open inwhich you may set the individual input channels for the post processing.

NOTICE! The window is only available when the button has been pressed andSAMURAI is in Record mode. If a post processing measurement has beenloaded, the window will not be displayed.

NOTICE! If you want to post-process an existing post processing measurement, opena post processing measurement and click on NEW in the main toolbar.


15.1 Post Processing - Step by step

Figure 15.1: Window - Post processing signal

Figure 15.2 shows the toolbar of the window in figure 15.1.

Figure 15.2: Post processing toolbar

For calculating new data you need the time signals of an existing measurement or WAV file.

NOTICE! You may only perform a SLM analysis if the base signals were recordedwith a sampling rate of 51.2 kHz (audio/FFT bandwidth 20 kHz) or of25.6 kHz (audio/FFT bandwidth 10 kHz).

Add the “input channels” for the post processing by clicking on in the window shown in figure 15.1. Thewindow shown in figure 15.3 will open.


15 POST PROCESSING

Figure 15.3: Window - Post processing setup

The window contains the post processing channels in a list. You may remove existing or add new channels.You can also play a channel by clicking on . This will provide orientation when you use many channels.

Click on Remove channel to remove a channel. A window will open in which you may select channels forremoval (figure 15.4).

Figure 15.4: Remove post processing channel


15.2 AddOn: Psychoacoustics

NOTICE! If the list contains less than 4 channels, a context menu will be displayed atthe Remove channel button instead in which you may select the channelfor removal.

Click on Add channel to add a new channel. The window shown in figure 15.5 will open.

Figure 15.5: Add post processing channel

The parameters of the window are described in table 15.1.

Element Description

Source Type Select SAMURAI measurement or WAV file as data source.

Source Name Display of the source path name.

. . . Use this button to select the source. For SAMURAI measurements select the measurement folder, notthe working folder.

Channel Define which channel of the measurement is used for post processing.

Use all channels Check this box to use all available channels from the measurement.

Unit Define the physical unit for the selected channel when using WAV files.

Amplitude scale Define the scaling factor for the physical unit when using WAV files. When using WAV files exported fromSAMURAI, the value is retrieved from the file.

dB reference value Enter dB reference value for the channel.

Enabletime synchronization

Check this box if you want to set a time offset between the channels.

Time Offset Define time offset relative to channel 1.

Sampling rate,Sample Count,Data Format

Specify details for selected channel.

Table 15.1: Parameters for adding a post processing channel

15.2 AddOn: Psychoacoustics

Psychoacoustics is an additional feature to the post process option. It approves the system for researchacoustic signals in roughness, sharpness and loudness.


16 TONE ASSESSMENT

16 Tone AssessmentThis option allows assessing the tonality of signals according to ISO 1996-2 Appendix C. Tones are con-Tone-

assessment

sidered existing when the level of each line in a FFT averaged over one minute exceeds the levels of theadjacent spectral lines by 6 dB or more. All local maxima with a bandwidth of 3 dB and narrower than 10per cent of the width of the current critical band are considered a tone (see table C.1 of ISO 1996-2). If asection is broader than 10 per cent of the width of the critical band, these lines are neither considered tonesnor narrow-band noises.

Figure 16.1: Tonality assessment according to ISO 1996-2 Appendix C

By standard definition all lines not characterised as noise pauses are masking noises (see paragraph C.4.3.“Masking noise”). These contents are shown in green in the window in figure 16.1. Contents which havebeen identified as tones are red.

In the upper section of the window in figure 16.1 the entire examined spectrum is displayed. The areasidentified as tones are red. The bandwidth of the critical bands of the individual tones is displayed as blackbar above the spectrum. The table at the bottom left lists the following values:

Frequency The centre frequency of the identified tone.

dLta ∆Lta Tonal audibility based on the formula C.3 of ISO 1996-2 (2003).

Lpt Lpt Sound pressure level of the tones, based on formula C.1 of the standard.

Lpn Lpn Sound pressure level of the masking noise, based on the formula C.2 of the standard.

Kt Kt Adjustment value based on formula C.4 of the standard.

Use the three buttons in the bottom line of the window in figure 16.1 to copy events to the clipboard for furtherprocessing (creation of reports or further processing with Excel etc.).


17 Room AcousticsIn architectural acoustics it is clearly observed that different hearing impressions can be directly correlated to Roomacoustic

certain properties of the sound field to which the listener is presented. This observation leads acousticiansto the will of defining quantities which could at best describe a sound field objectively, in the aim of betterarchitectural designs, and in the end, better acoustical experiences to the listeners of concerts, lectures, ortheater performances. Rooms are characterized by a value called “impulse response”. It is calculated by thereaction of a room to an acoustic impulse.

17.1 Technical Data

• implemented Standards: ISO 3382:1997, IEC 60268-16:2003, ISO 18223

• Measurement range: bis 20 kHz

• Software: Calculation of the following values in third or full octaves

– Early Decay Time (EDT)

– Ceter Time (T10, T20, T30)

– Clarity (C30, C50, C80)

– Speech Transmission Index (STI)

– Rapid Speech Transmission Index (RASTI)

– Speech Transmission Index for telecommunication systems (STITEL)

– Speech Transmission Index for public address systems (STIPA)

17.2 Room Acoustics in Samurai

With the “Room Acoustics” option measurement data collected in the “Impulse Response” measurementmode can be analysed. The impulse response is calculated with the context menu (figure 17.1) in replayfor third or full octaves. In the opening main window the data are displayed numerically and graphically(figure 17.2). The parameters according to the above menu are discribed in table 17.1.

Figure 17.1: Context menu for Room Acoustic time signal


17 ROOM ACOUSTICS

Figure 17.2: Main window Room Acoustics

Buttons Einstellungen

STI Selection of the bands to be displayed graphically

STIPA Selection of the bands to be displayed graphically

STITEL STITEL

Energy Ratio Selection of the values to be displayed graphically (C30, C50, C80)

RT60 Selection of the values to be displayed graphically (EDT, T10, T20, T30)

Table 17.1: Parameters of the values in the above menu


18 SAMURAI Sound PowerIn recent years, many new EU guidelines regarding noise emission from machinery have been enacted, e.g. Sound-

power

the guidelines 2006/42/EG for machines in general as well as 2000/14/EG for construction machinery andother machines operated outdoors. A sound power declaration is required in order to obtain a CE mark formachines falling within the scope of these guidelines. The determination of the sound power by means of thesound pressure method according to ISO 3744-46 is the purpose of the SAMURAI option SOUND POWER.

This option enables the sound power measurement according to ISO 3744-46 with the aid of a 3D diagramwhich shows the positions of the microphones in relation to the sound source. Depending on the numberof available measurement channels, the measurements can be performed simultaneously or sequentially.The software can access several measurement devices in order to increase the number of available mea-surement channels. Either hemispherical or cuboid microphone deployment geometry may be selected.The sound power declaration is made in third-octave or octave bands. A clearly laid-out graphical programinterface guides the user through the whole measurement procedure.

18.1 Technical Data

• implemented Standards: DIN EN ISO 3744, 3745, 3746

• Measurement range: 12.5 Hz to 20 kHz

• Software:

– Hemispherical or cuboid measurement surface

– Calculation of microphone positions and display in a 3D diagram

– Freely selectable measurement sequence

– Reflecting planes selectable

– Allowance for reverberation time

– Evaluation of the K1 and K2 criteria

– Sound power level declaration in third-octave or octave bands

– Remote control via network possible


19 WEATHERSTATION

19 WeatherstationThe meteorological correction factor Cmet (DIN ISO 9613-2) must be taken into account in the calculation ofthe noise rating level, e.g. for the German “TA Lärm”. The correction factor includes a deduction dependentupon the meteorological conditions as well as the local situation between the noise source and the point ofmeasurement. This option allows the following weather data to be recorded synchronously with the noiselevel measurement: temperature, humidity, pressure, rain event, wind speed and wind direction. The winddirection is visualized as a direction-dependent color of a marker track.

19.1 Technical Data

Software:

• Synchronous recording with time signal, spectra etc.

• Temperature

• Wind speed and wind direction

• Humidity

• Rain event

• Atmospheric pressure

• ISO 9613-2:1996 (Acoustics – Attenuation of sound during propagation outdoors – Part 2: Generalmethod of calculation)

19.2 Weather Data graph

Figure 19.1: Weather Data graph

This graph allows you to display weather data. As with the history graph you may display several tracessimultaneously. Additionally, two stripes are shown at the bottom. The first stripe represents the rainssensor data and the second the coloured wind direction. The legend for the coloured stripes is given in the


19.2 Weather Data graph

upper right corner of the graph (figure 19.1). The settings below General, x-axis, y-axis and More Axis aresimilar to those of the history graph.

Figure 19.2: Parameters Weather Data graph - Weather

The parameters below Weather are described in the following table 19.1.


Show Rainfall stripe Check this box to display the stripe for the rainfall (see black stripe in figure 19.1).

Rainfall color Click to select the colour of the rainfall stripe.

Rainfall stripe threshold When the connected weather station also provides a rainfall amount, set the threshold fordisplaying the stripe in colour.

Show Wind direction stripe Check this box to display the wind direction.

Show Wind direction arrowsover wind speed trace

Check this box to display small arrows over the wind speed trace to indicate the wind direc-tion. The direction is defined by the legend in the upper right corner of the graph.

Pix Enter arrow length in pixels.

Compass colors Click to adjust the colours for the individual wind directions.

Table 19.1: Parameters Weather Data graph


20 REMOTESAMURAI

20 remoteSAMURAIThis option is primarily intended for noise monitoring of building sites, industrial facilities, sport events,remote-

SAMURAI

amusement parks etc. in cases where continuous on-line monitoring is necessary. The REMOTE CLIENToption is a separate program (remoteSAMURAI) which allows simultaneous access to several measurementstations in a network. The program acts as a client, using the TCP/IP interface of SAMURAI on the remotemeasurement stations. When a measurement station is accessed, the sound level meter values and third-octave spectra are displayed graphically. The user has either full access or only display access, dependingon the password supplied.

20.1 Technical Data

• Remote access to several measurement stations via TCP/IP

• History graph of all sound level values during the measurement

• Third-octave spectra during the measurement

• Use with either full access or only display access


INDEX

Index

AAnalysis

Building vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Cross Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Fractional octaves . . . . . . . . . . . . . . . . . . . . . . . . . . . 29HVMA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8NoiseCam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Order tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39Vibration Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Auto correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Auto spectrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Automatic calibration check . . . . . . . . . . . . . . . . . . . . . . 13

Step by step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

BBuilding vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47Building Vibration graph. . . . . . . . . . . . . . . . . . . . . . . . . .49

CCalibration

Automatic calibration check step by step. . . . .14Automatic Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Cepstrum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Coherence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33Cross Analysis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Auto correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Auto spectrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Cepstrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Coherence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Cross correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Cross spectrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Transfer function . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Cross Analysis graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35Cross correlation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Cross spectrum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

DDelta Tacho. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

EEU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

FFFT

Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Force/Exponential window . . . . . . . . . . . . . . . . . . . . . . . 34Fractional octaves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29Frequency step width . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

GGraphs

Building Vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Cross Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35HVMA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9NoiseCam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21Sound Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45Vibration Meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23Weather Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

HHVMA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6HVMA graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

IImpact control center . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32Impact response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Impulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

MMeasurement Data Collector . . . . . . . . . . . . . . . . . . . . .14

Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17Edit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Export . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Values to be stored. . . . . . . . . . . . . . . . . . . . . . . . . .16

MeasurementsImpact response . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31Passby . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Multi-Sine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

NNoiseCam graph. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

OOrder spectrum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39Order tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

PPassword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Peak particle velocity . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49Post Processing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

SSignal Generator

Impulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28Multi-Sine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26Pseudo-Random . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27Sine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Square . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25Sweep linear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26


INDEX

Sweep logarithmic . . . . . . . . . . . . . . . . . . . . . . . . . . 26Triangle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25User defined . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Sound Intensity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44Sound Intensity graph. . . . . . . . . . . . . . . . . . . . . . . . . . . .45Starpass. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18Sweep. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26Swept sine. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

TTacho. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38TCP Server

Number of connections. . . . . . . . . . . . . . . . . . . . . .30Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Transfer function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33Trigger

Sound level trigger . . . . . . . . . . . . . . . . . . . . . . . . . . 37

VVibration Meter graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

WWeather Data graph . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62


options manual - spectra · options manual version 2.0 january 2, 2012 c sinus messtechnik gmbh...

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