Confidential and Proprietary - Qualcomm Technologies, Incorporated. All Rights Reserved.

Enhanced Voice Services – EVS IWAENC 2014 Presentation

September 2014

2

Topics of this Presentation

Benefits of EVS

Standardization framework

Specifications

Algorithmic overview and special aspects

Delay and complexity

Embedding EVS in 3GPP system

Quality characterization

Deployment / commercialization aspects

3

kbps4.75 12.2

6.6 23.85kbps

5.9 kbps 128

AMR

AMR-WB

EVS

EVS – Next Gen 3GPP Speech Coding for Improved User Experience in Telephony

AMR

AMR-WB

EVS

Qu

ality

1995 2002 2014

4

Standards

Commercial

AMR AMR-WB EVS

3GPP Voice Service Evolution

WCDMA+

2002 2014

2015

2000

20102001

5

EVRC Family AMR Family

Different Voice Solutions

Carrier Grade Voice Best Effort Voice

OTT-VOIPIMS/RCS VoIPCS Voice

VoLTEVoMBB

Ensures Consistent & Seamless

Rich Voice Experience

EVS FamilyCustomized Family Internet Family G.7xx Family

CDMA UMTS

OPERATOR

PROVIDED

SERVICE

TAPI

Dialer

OPERATOR

PROVIDED

SERVICE

Operator

Client

3RD PARTY

PROVIDED

SERVICE

3rd party

Client

PORTAL

PROVIDED

SERVICE

HLOS

Client

VoWANVoWiFi

Very reliable, fully interoperable, but

lacks personalization

Interoperable but Limited to

VoLTE Coverage

Lacks IP Mobility, Connectivity & Interop

with other mVoIP

6

What is EVS?

3GPP Speech Conversation / Telephony Coder

EVS – Enhanced Voice Services− Next generation 3GPP speech coding

− Following the successful FR, HR, EFR, AMR, AMR-WB codecs

− Designed for packet-switched networks / mobile VoIP

− VoLTE is a key target application

− Application in other networks

− AMR-WB interoperable mode

− Rel-12 Work Item in 3GPP preceded by a Study Item TR 22.813

Key features− Super-wideband speech (32 kHz sampling) – improved speech quality

− Source-controlled variable bit-rate operation – improved capacity

− Designed for VoIP – improved robustness

− Improved music performance

− Wide bit-rate range and all bandwidths for maximum flexibility

− Backward interoperable mode to AMR-WB

Standardization process− Qualification phase

− Selection phase

− Characterization phase

7

3GPP EVS is the Next Generation Speech CoderSpeech quality determines user experience

− Ensuring voice quality on new VoLTE deployments

− EVS addresses all networks – mobile VoIP with QoS, best effort VoIP, CS

3GPP goals of Enhanced Voice Services (EVS) standardization

− Feature-rich coder

− Designed for VoIP applications such as MTSI in TS 26.114

− It is further desirable that the benefits of EVS are available for users of other networks such as CS

− NB, WB, SWB bandwidths, FB optional, high robustness mode

− Bit rates: 7.2, 8, 9.6, 13.2, 16.4, and 24.4 kb/s gross rates that comply with LTE TBSs; 32, 48, 64, 96, 128 kb/s

− Quality improvements – improving user experience

− Better quality in VoLTE and UMTS (with no new RAB)

− Evolution path: EVS provides SWB at around 13 kbps – lower rate and lower delay SWB than other industry

coders without sacrificing quality

− Better quality for music and mixed content in conversational applications

− Capacity improvements – increasing system efficiency

− VBR at 5.9 kbps provides high capacity mode

− Robustness improvements – optimized behavior in VoIP applications

− More robust NB/WB through significantly better error resilience

− High robustness mode

8

EVS- Enhanced Voice Services

EVS @13.2kbps provides Super Wideband Voice Quality at comparable bit-rate to AMR & AMR-WB

AMR

AMR-WB

EVS

Be

tter V

oic

e Q

ua

lity

NB

WB

SW

B

Improves voice clarity and

intelligibility @12.65 kbps

More natural sounding speech

and improved music quality

@13.2 kbps

Toll quality narrowband voice

@ 12.2 kbps

The Ultimate Codec of Choice for Mobile Telephony

9

Better Capacity

Superior Quality

Enhanced Error ResiliencySuper Wideband: 13.2 – 128 kbps

Wideband: 5.9 – 128 kbps

Narrowband: 5.9 – 13.2 kbps

Support of Source-Controlled

Variable Bit Rate operation

Extended audio bandwidth: 50 Hz to 16 kHz

Better quality NB and WB Voice compared to

AMR & AMR-WB

Entertainment quality music coding

Optimized for VoLTE and Circuit

Switched Networks

Improved Robustness to packet

loss compared to AMR-WB

EVS Benefits

Wideband(Voice)

Narrowband(Voice)

Super Wideband(Voice and Music)

Low frequencies increases naturalness, presence

and comfort

High frequencies improves voice clarity and

intelligibility

16kHz~7kHz

Reproduces better

audio and music

10

Enhanced In-Call Music Quality

Enhanced Error Resiliency

2

2.5

3

3.5

23.85 13.2

AMR-WB EVS

Error Resilience Improvement for 3GPP

delay loss profile (6% FER)

2

2.5

3

3.5

19.85 23.85 13.2

AMR-WB EVS

Music coding performance (3% FER)

2

3

4

12.65 23.85 13.2 12 16

AMR-WB EVS Opus

Speech coding performance

(with background car noise)

Superior Voice Quality

EVS Performance

11

Wh

y D

ep

loy

EV

S?

EVS – Solution for Each Situation

Jitter Buffer Management

NB WB SWB FB Stereo

New EVS

Modes

(CBR)

New EVS

Modes

(VBR)

AMR-WB

Interop

Modes

New EVS Modes (CBR)

7.2-128 kb/s

New EVS

Modes

(VBR)

New EVS Modes

7.2-128 kb/s

New EVS Modes

(optional)

New EVS Modes

(optional)

Speech Speech Speech Speech Music Speech Speech Music Speech Music Speech Music

7.2-13.2 kb/s 5.9kb/s

(avg)

6.6-23.85

kb/s

7.2-128 kb/s 7.2-128

kb/s

5.9 kb/s

(avg)

13.2-128

kb/s

13.2-128

kb/s

7.2-128 kb/s 7.2-128 kb/s 7.2-128 kb/s 7.2-128 kb/s

Better Capacity

Same NB/WB quality as legacy

Better Music

Near AAC Quality at much

lower delay

Better Quality

Same capacity as legacy

NB/WB

Improved Error Resilience

Much better than AMR-WB, VoIP

Optimizations

12

3GPP EVS Standardization Process in Rel-12

Requirements phase – design constraints and performance requirements

Candidate coders− 13 companies submitted a candidate by 16 November 2012

− Ericsson, Fraunhofer, Huawei, Motorola, Nokia, NTT, NTTDoCoMo, Orange, Panasonic, Qualcomm, Samsung, VoiceAge, ZTE

− Standardization by competition

Qualification phase− Aim is to keep the most promising 5 candidates for selection

− Extensive testing− 12 experiments, each candidate is tested in-house and in another listening lab− Global Analysis Lab performs collection and analysis of test results

− Qualification meeting in March 2013 agreed in 5 candidates

All proponents announced a collaborative development of a joint candidate

Selection phase – single joint candidate− Codec selection is based on extensive testing in neutral listening labs

− Selection meeting in August 2014 agreed to adopt the joint candidate as EVS standard

− Agreement on most EVS specifications

Characterization phase− Aim is to test the coder performance for all conditions and special signals / conditions

Approval of remaining EVS Specifications and Technical Report

13

2014Jun Jul Aug Sep Oct Nov Dec

2015

Approval of EVS Technical Report and floating-point spec

Dec 10

SA approval of EVS standard

Sep 15

3GPP SA4#80bis: codec selection and approval of specifications

Aug 30

3GPP SA4#80

Aug 4

Submission of EVS executable for testing

June 27

EVS Prototypes Available for Preliminary Lab/Field Testing EVS Engineering Build Available For IOT and Field Trials

EVS Rel-12 Standardization Timeline

Selection Testing Characterization Testing

Nov 6

3GPP SA4#81

EVS over 3G UTRAN CS Work Item (Rel-13)

2015

14

EVS

Qualcomm

Samsung

Nokia

Panasonic

NTT

NTT DoCoMo

Orange

ZTE

Huawei

Ericsson

VoiceAge

Fraunhofer

EVS Is A Global Collaboration

Broad Industry Support Across the Ecosystem

Keys For Successful Deployment

• Codec hw/sw support (i.e., chipset, IMS/RCS client,

voice pre/post-proc, etc.)

• Super Wideband terminal acoustic designs

• Infra support (IMS, gateways, etc)

• Test Equipment Support (call box, IMS, SWB

acoustics, voice quality)

• EVS support in voice services outside of mobile

ecosystem (e.g., wireline VoIP, Enterprise VoIP &

Video Telephony, etc.)

12 Party

Collaboration

15

EVS Design Requirements

Narrowband

(0-4 KHz) Coding of

Speech better than

AMR

Wideband

(0-8 kHz) Coding of

Speech better than

AMR-WB; inclusion of

AMR-WB IO

Superwideband (0-

16 kHz) Coding of

Speech better than

AMR-WB

Improved Error

Resilience

for both Circuit

Switched and

Packet Switched

Communication

and

VoIP Capability

Source

Controlled

Variable Rate

Coding

Improved

Coding of

Music

for In-call Music

(Music on hold

and Ringback)

Constraints on

Frame Length,

Max.

Algorithmic

Delay,

Complexity,

JBM, Rate

Switching,

PLC, RTP

Payload

Format,

VAD/DTX/CNG

16

EVS Requirements in SWB at Low RatesCategory Bitrate (kbit/s) FER DTX Requirements

Clean speech

-26,-16,-36dBov

13.2 0% On†/Off NWT G.722.1C @ 32

16.4 NWT G.722.1C @ 48

24.4 NWT G.718B @ 36

Clean speech

-26 dBov

13.2 x=3%,

6%

Off

On† for 13.2

NWT G.722.1C @ 48, x% FER

16.4 NWT G.719 @ 48, x% FER

24.4 NWT G.719 @ 56, x% FER

Noisy Speech (Car, Office,

Street)

-26 dBov

13.2 0% On‡/Off NWT G.722.1C @ 24 when EVS DTX off

NWT AMR-WB @19.85 DTX on when EVS DTX on

16.4 NWT G.722.1C @ 32 when EVS DTX off

NWT AMR-WB @23.05 DTX on when EVS DTX on

24.4 NWT G.722.1C @ 48 when EVS DTX off

NWT AMR-WB @23.85 DTX on when EVS DTX on

Noisy Speech (Car, Office,

Street)

-26 dBov

13.2 x=3%,

6%

Off

On‡ for 13.2

NWT G.722.1C @ 24, x% FER and DTX off

NWT AMR-WB @19.85, x% FER and DTX on when EVS DTX on

16.4 NWT G.722.1C @ 32, x% FER

24.4 NWT G.722.1C @ 48, x% FER

17

3GPP EVS Specifications

Spec No. Title Status: agreed

TS 26.441 EVS Codec General Overview For approval

TS 26.442 EVS Codec ANSI C code (fixed-point) For approval

TS 26.443 EVS Codec ANSI C code (floating point) Draft

TS 26.444 EVS Codec Test Sequences For approval

TS 26.445 EVS Codec Detailed Algorithmic Description For approval

TS 26.446 EVS Codec AMR-WB Backward Compatible Functions For approval

TS 26.447 EVS Codec Error Concealment of Lost Packets For approval

TS 26.448 EVS Codec Jitter Buffer Management For approval

TS 26.449 EVS Codec Comfort Noise Generation (CNG) Aspects For approval

TS 26.450 EVS Codec Discontinuous Transmission (DTX) For approval

TS 26.451 EVS Codec Voice Activity Detection (VAD) For approval

TS 26.114 MMTel CR Part for approval;

part draft

TR 26.952 EVS Codec Performance Characterization Not existing yet

18

Transmit Side

19

Receive Side

20

EVS Bit Rates and Supported Bandwidths

Source codec bit-

rate (kbit/s)

Supported audio

bandwidthsDTX availability

5,9 (SC-VBR) NB, WB

Yes (Always On; Bit

Rates are 2.8, 7.2, 8.0

kbit/s)

7,2 NB, WB Yes

8.0 NB, WB Yes

9,6 NB, WB, SWB Yes

13,2 NB, WB, SWB Yes

13,2 (channel

aware)WB, SWB Yes

16,4 NB, WB, SWB, FB Yes

24,4 NB, WB, SWB, FB Yes

32 WB, SWB, FB Yes

48 WB, SWB, FB Yes

64 WB, SWB, FB Yes

96 WB, SWB, FB Yes

128 WB, SWB, FB Yes

Source codec bit-rates for the EVS codec

The SID bit rate for EVS primary modes is 2.4 kbit/s.

Source codec bit-rate (kbit/s)

6,6

8,85

12,65

14,25

15,85

18,25

19,85

23,05

23,85

Source codec bit-rates for the AMR-WB Interoperable

Modes of the EVS codec

The SID bit rate in AMR-WB IO corresponds to AMR-WB (2.0 kbit/s).

21

Encoding Modes

Bitstream

Multiplex

LP-based

Coding

Frequency

Domain

Coding

Inactive Signal

Coding/CNG

Common Processing

Signal

Resampling

Signal

Analysis

Command Line

Parameters

Classifier Information

Classifier

Decision

Input

Signal

Hybrid coding scheme combining linear predictive (LP) coding techniques based upon

ACELP (Algebraic Code Excited Linear Prediction), predominantly for speech signals

Transform coding method, for generic content, as well as inactive signal coding in

conjunction with VAD/DTX/CNG (Voice Activity Detection/Discontinuous Transmission/

Comfort Noise Generation) operation

EVS codec is capable of switching between these coding modes without artefacts

22

ACELP

Bitstream

Multiplex

High Band

Parameterization

Residual

Quantization

LP Filter

Analysis

Bandwidth

Splitter

Low Band

Signal

Input

Signal

LP Coefficient

Estimation &

Interpolation

High Band

Signal

The input signal is split into high frequency band and low frequency band paths

The high-frequency portion of the signal is represented with several different parametric

representations. The parameters vary as a function of the bit-rate and the residual

quantization strategy. The transmitted parameters include some or all of spectral

envelope, energy information and temporal evolution information.

In the LP based core, the configuration of the LP coefficient estimation, parametric HF

representation and the residual quantization is similar to those of AMR-WB

23

Frequency Domain Operation

Separation into a control layer and a signal processing layer

The control layer performs signal analysis to derive several control and configuration

parameters for the signal processing layer. The time-to-frequency transformation is

based on the Modified Discrete Cosine Transform (MDCT) and provides adaptive time-

frequency resolution. The control layer derives measures of the time distribution of the

signal energy in a frame and controls the transform.

The MDCT coefficients are quantized using a variety of direct and parametric

representations depending upon bit rate signal type and operating mode.

24

Inactive Signal Coding

When the codec is operated in DTX on mode the signal classifier depicted in Figure 1

selects the discontinuous transmission (DTX) mode for frames that are determined to

consist of background noise. For these frames a low-rate parametric representation of the

signal is transmitted no more frequently than every 8 frames (SID frame).

The low-rate parametric representation is used in the decoder for comfort noise

generation (CNG) and includes parameters describing the frequency envelope of the

background signal, energy parameters describing the overall energy and its time

evolution.

25

Source Controlled Variable Bit-Rate Coding

VBR coding describes a method that assigns different number of bits to a speech frame

in the coded domain depending on the characteristics of the input speech signal

This method is often called source-controlled coding

− Typically, a source-controlled coder encodes speech at different bit rates depending on how the current

frame is classified, e.g., voiced, unvoiced, transient, or silence. Note that DTX operation can be combined

with VBR coders in the same way as with Fixed Rate (FR) coders; the VBR operation is related to active

speech segments.

The VBR solution provides narrowband and wideband coding using the bit rates 2.8, 7.2

and 8.0 kbps and produces an average bit rate at 5.9 kbps.

Due to the finer bit allocation, in comparison to Fixed Rate (FR) coding, VBR offers the

advantage of a better speech quality at the same average active bit rate than FR coding

The benefits of VBR can be exploited if the transmission network supports the

transmission of speech frames (packets) of variable size, such as in LTE and UMTS

networks.

26

EVS – Source Controlled Variable (SC-VBR) Bit-Rate Encoder

Pre-processing

Pre-emphasis -> Voice-Activity-

Detection -> LPC analysis ->

Open-Loop Pitch Estimation

EVS speech type

classification

EVS-SID (Silence Descriptor)

NELP mode

Inactive

speech

Unvoiced-

speech

Voiced-

speechHas there

been 2

consecutive

EVS-Voiced

frames ?

PPP WI mode

EVS Voiced mode

EVS Transient mode

First Voiced-

speech after

voiced onset

NO

YES

EVS Generic mode

All other

speech

27

SC-VBR Salient FeaturesEnabled use of low-rate modes for certain speech types

PPP WI (Prototype Pitch Period Waveform Interpolation) mode for coding voiced speech (2.5 kbps)

Noise-Excited linear prediction (NELP) mode for unvoiced speech (2.3 kbps for narrow-band and 2.4 kbps

for wide-band)

PPPWI and NELP are low-rate LP residual (excitation) signal coding schemes

Illustration – improved system efficiency through lower average bit-rate

7.36

12.65 12.81

7.36

12.5913.04

1

2

3

4

5

EVRC-WB AM R-WB at

12.65k bps

VM R-WB,

M ode 0

EVRC-WB AM R-WB at

12.65k bps

VM R-WB,

M ode 0

CT1 - Input Level and FER Conditions CT2 - Noise Conditions

Qu

ali

ty

0

2

4

6

8

10

12

14

Avera

ge D

ata

Rate

(kb

ps)

Speech Quality Active ADR

28

Advanced Error Resilience for VoLTE – Partial RedundancyAvailable in a special mode of the EVS coder (channel aware mode) offers improved performance under packet loss conditions in a VoIP system

EVS offers partial redundancy based error robust channel aware mode at 13.2 kbps for both wideband and super-wideband audio bandwidths.

Packets arrive at the decoder with random jitters in their arrival time; packets may also arrive out of order at the decoder.

Since the decoder expects to be fed a speech packet every 20 ms to output speech samples in periodic blocks, a de-jitter buffer is required.

Partial copies of the current speech frame are piggybacked on future speech frames, without increase in the total bit rate. Partial copy of a lost frame can be retrieved by polling the de-jitter buffer.

Frame nFrame n+3 Frame n+2 Frame n+1n

• Adding partial copy of previous critical frame for better error resilience

0

0.5

1

1.5

2

2.5

3

3.5

4

AMR-WB 12.65 3% FER AMR-WB 23.85 3% FER EVS-SWB-AdvErrRes-on -13.2 kbps10% FER

EVS-SWB-AdvErrRes-off -13.2 kbps10% FER

EVS-SWB-13.2 kbps with Advanced Error Resilience at 10% packet loss is equivalent in quality to AMR-WB-23.85 kbps @ 3% packet loss

29

Advanced Error Resilience in EVS fits well for VoLTE

VoLTE network

AMR-WB

Packets

Received

Packets

DeJitter

Buffer

AMR WB

Encoder

AMR WB

Decoder

VoLTE network

EVS Packets Received

Packets

DeJitter

Buffer

EVS

Encoder

EVS

Decoder

30

Frame Loss Concealment at Decoder Side

The EVS codec includes frame loss concealment algorithms

An extrapolation algorithm estimates the signal in a lost frame

− For the LP based core this estimation operates on the last received residual and LP

coefficients.

− For the frequency domain core in some cases the last received MDCT coefficients are

extrapolated and in addition the resulting time domain signal is guaranteed to give a smooth

time evolution from the last received frame into the missing frames.

Once the frame loss is recovered, i.e., the first good frame is received the codec

memory is updated and frame boundary mismatches towards the last lost frame

are minimized.

For situations of sustained frame loss the signal is either faded to background

noise or its energy is reduced and finally muted when no reasonable extrapolation

can be assumed.

31

EVS Delay and Complexity

Sampling frequencies− 48, 32, 16, 8 kHz at input and output

EVS algorithmic delay− The coder operates on 20 msec frames

− The algorithmic delay is less or equal to 32 msec

− For 48, 32, 16 kHz sampled output, the delay consists of one 20 msec frame, 0.9375 msec delay of input resampling filters on the encoder-side, 8.75 msec for the encoder look-ahead, and 2.3125 msecdelay of time-domain bandwidth extension on the decoder-side resulting in 32 msec

− For 8 kHz sampled output, the decoder delay is reduced to 1.25 msec needed for resampling using a complex low-delay filterbank, resulting in 30.9375 msec overall algorithmic delay.

EVS complexity− With all features supported and measured according to EVS-8b, the worst case complexity of

the coder is 85.9 WMOPS which splits up to 56.7 WMOPS for encoder (24.4 kbit/s SWB with DTX on) and 29.2 WMOPS for decoder (48 kbit/s SWB with DTX off, FER=6%).

− The coder uses 175KW of RAM (with no JBM included), 157 KW of ROM, and 116 KW of Program ROM.

− The JBM solution was measured to consume 18 WMOPS and 49 KW RAM.

32

Embedding EVS in 3GPP System

Multimedia Telephony (MMTel) Servíce over IMS uses EVS

− Support of AMR and AMR-WB for VoIP in 3GPP networks prior to Rel-12

− Inclusion of EVS support for VoLTE in Rel-12

EVS for 3G UTRAN Circuit-Switched networks

− Agreed Work Item

− Rel-13 time frame

− Enable users of UMTS to make benefit of the enhanced quality due to EVS

33

EVS Quality – Clean Speech Inputs (Proprietary Tests)

2

2.5

3

3.5

4

4.5

5

0 4 8 12 16 20 24 28 32 36 40 44 48 52 56 60 64

Sub

ject

ive

DM

OS

Test

Bit Rate (kbps)

AMR-WB

EVS-SWB

EVS-WB

Opus

G718B

G719

G722.1c

Note: OPUS bit rates are target average bit rates. The true average and standard deviations of the frame bit rates vary across bit rates

34

Official EVS Selection Tests in 3GPP – Experiments Exp. Content Methodology # of Exp.N1 NB clean speech under clean channel condition including input level dependency ACR 1

N2 NB clean speech under impaired channel conditions including delay/jitter profiles ACR 1

N3 NB noisy speech under clean channel condition and impaired channel conditions DCR 1

N4 NB mixed content and music under clean channel condition and impaired channel conditions including delay/jitter profiles

ACR 1

W1 WB clean speech under clean channel condition including input level dependency ACR 1

W2 WB clean speech under impaired channel conditions including delay/jitter profiles ACR 1

W3 WB noisy speech under clean channel condition DCR 1W4 WB noisy speech under impaired channel conditions including delay/jitter profiles DCR 1

W5 WB mixed contents and music under clean channel condition DCR 1W6 WB mixed contents and music under impaired channel conditions DCR 1

W7 WB mixed contents and music under impaired channel conditions including delay/jitter profiles

DCR 1

I1 AMR-WB IO clean speech under clean channel condition including input level dependency

ACR 1

I2 AMR-WB IO clean speech under impaired channel conditions ACR 1I3 AMR-WB IO noisy speech under clean channel condition DCR 1I4 AMR-WB IO noisy speech under impaired channel conditions DCR 1I5 AMR-WB IO mixed contents and music under clean channel condition DCR 1

I6 AMR-WB IO mixed contents and music under impaired channel conditions DCR 1

S1 SWB clean speech under clean channel condition including input level dependency DCR 1

S2 SWB clean speech under impaired channel conditions including delay/jitter profiles DCR 1

S3 SWB noisy speech under clean channel condition DCR 1S4 SWB noisy speech under clean channel condition DCR 1S5 SWB noisy speech under impaired channel conditions DCR 1S6 SWB mixed contents and music under clean channel condition DCR 1

S7 SWB mixed contents and music under impaired channel conditions including delay/jitter profiles

DCR 1

Total 24

35

4.3

8

4.0

4

3.7

1

2.9

0

1.9

4

1.2

9

3.7

6

3.7

9 3.9

2

3.7

1

3.5

1

3.3

3

3.6

1

3.4

5

4.0

7

3.9

8 4.1

5

3.9

6

3.9

0

4.2

8

4.2

4 4.3

7

4.3

4

4.1

2 4.2

5

4.2

1 4.3

8

4.3

8

4.2

3

4.2

6

3.9

8 4.1

0 4.1

9

4.0

3

4.2

4

4.2

1

4.4

2

4.1

8 4.3

1

4.2

7 4.3

8

4.4

3

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

Experiment N1 -- NB Clean Speech, Clean Channel

36

4.3

1

4.0

4

2.8

7

2.0

2

1.3

7

1.14

3.5

1

3.9

8

4.0

5

4.0

3

4.0

6

3.9

9

2.7

9

3.2

5

3.3

1

3.1

7 3.2

8

3.2

9

3.7

2

4.1

1

4.0

8

4.1

7

4.1

9

4.2

2

4.3

0 4.4

5

4.4

8

4.0

7

3.9

3 4.0

3

4.2

4

4.3

2 4.4

4

4.4

5

3.8

4

4.0

2

4.1

1 4.2

4 4.3

5

4.3

1 4.4

6

4.0

9

4.0

2

4.0

7 4.2

2

4.2

1 4.3

1 4.4

1

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

Experiment W1 -- WB Clean Speech, Clean Channel

37

4.8

5

4.0

6

3.4

5

2.4

0

1.2

7

1.0

3

2.5

7

3.4

9 3.6

8

1.9

2

2.9

6

2.9

2

3.7

8

4.1

1

4.1

3

4.3

9

3.7

1

4.2

2

3.2

4

3.5

9

3.6

4

3.9

1

3.1

9

3.6

6

0.00

1.00

2.00

3.00

4.00

5.00

6.00

Experiment W7 -- WB Music & Mixed Content at FER

38

4.7

9

4.6

9

4.6

3

3.5

9

2.0

7

1.2

8

3.9

8

4.2

4

4.6

0

4.6

0 4.7

3

4.6

8

3.6

2 3.7

8

4.4

0 4.5

3

3.9

4 4.1

6

4.6

5

4.6

1

4.4

8

4.5

3 4.7

3

4.6

6

4.7

6

4.5

8

4.6

2 4.7

5

4.5

5

4.5

7

4.5

9

4.6

2

4.6

2

4.5

0

4.5

6 4.7

3

0.00

1.00

2.00

3.00

4.00

5.00

6.00

Experiment S1 -- SWB Clean Speech, Clean Channel

39

4.4

2

4.3

6

4.2

8

3.9

7

2.3

8

1.3

8

3.7

7

4.0

5 4.1

8

4.3

9

4.3

5

4.3

5

3.6

3

3.5

9

3.6

4

4.0

6

4.0

6

4.2

9

4.3

5

4.1

3

4.3

8

3.9

0

3.8

9

4.1

5

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

Experiment S3 -- SWB Speech / Background Noise (Street, SNR=20dB)

40

4.7

2

4.7

0

4.7

4

3.9

2

1.7

9

1.10

2.8

2

3.0

9 3.2

8

3.4

9

3.5

6 3.7

2

3.6

5

3.0

5

2.5

5

2.8

2

2.8

8 3.0

8 3.2

4

3.2

3

3.2

1

2.7

9

3.7

6 3.8

5

4.2

3

3.7

2

4.2

8

4.1

4

3.8

1

3.5

3

3.4

6

3.9

5

3.3

3

3.9

5

3.7

8

3.5

2

0.00

1.00

2.00

3.00

4.00

5.00

6.00

Experiment S5 -- SWB Speech / Background Noise, FER (Car, SNR=15dB)

41

4.6

7

4.6

1

4.6

3

4.4

1

3.2

6

1.2

1

2.3

6

2.5

9

3.6

7 3.7

7

3.9

8 4.1

1

1.9

4

2.1

7

3.1

8 3.2

9

3.6

8

3.5

7 3.6

8

4.1

9

3.3

9

3.6

3

4.1

1

4.1

2

4.3

7

4.3

2

3.2

2

3.0

3

3.3

2

3.6

7 3.7

9 3.8

9

3.9

3

3.0

5

4.0

6

4.5

2

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

4.50

5.00

Experiment S7 -- SWB Music & Mixed Content, FER

42

2014Jun Jul Aug Sep Oct Nov Dec

2015

Approval of EVS Technical Report and floating-point spec

Dec 10

SA approval of EVS standard

Sep 15

3GPP SA4#80bis: codec selection and approval of specifications

Aug 30

3GPP SA4#80

Aug 4

Submission of EVS executable for testing

June 27

EVS Prototypes Available for Preliminary Lab/Field Testing EVS Engineering Build Available For IOT and Field Trials

EVS Rel-12 Standardization Timeline

Selection Testing Characterization Testing

Nov 6

3GPP SA4#81

EVS over 3G UTRAN CS Work Item (Rel-13)

2015

43

EVS Deployment

EVS targets – VoLTE and other networks− VoLTE mass deployment is on-going

− EVS in 3G UTRAN CS networks

VoLTE trials− Goal is to make EVS available for VoLTE trials and deployment

− Pre-commercial phase during 2015

Qualcomm is key partner in EVS deployment− Serve ecosystem by making EVS codec available in mobile chipsets

− Pre-standard version available for VoLTE trials and branded voice services

Deployment of standardized version can begin− IOT, field testing is first step

Qualcomm supports best-in-class voice quality for IMS based voice service deployments on LTE with a complete suite of tools and features, including EVS, IMS client, and voice enhancement.

44

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