central australian education and training network e-learning project 2007 with bill wade july 17,...

Central Australian Education and

Training Network

E-Learning Project 2007with Bill Wade

July 17, 2007

CAETN - E-Learning 20072

Digital Audio Day Plan

1. Introductions2. Digital Audio Basics & Recording

Tips3. Using MP3 Recorders4. Editing Audio - AudacityLunch5. Benefits of Audio

Our Art, Our Place, Our Way

6. Blogging Skills7. Reflection on blogging,

podcasting, audioblogging5. Uploading Audio / podcasting to

our blogsConclusions & Closure

Central Australian Education and

Training Network

E-Learning Project 2007with Bill Wade

July 17, 2007


What is Sound?

Energy Moving molecules Something we hear Vibrations in our ear Brains interpretation of a

form of energy that results in vibrations in our ear

Auditory memory

Image source http://www.physicsclassroom.com/Class/sound/u11l1c.html viewed June 20, 2007


What is Sound?

A Pressure Wave Longitudinal wave

– needs a medium

Points of low (rarefaction) and high (compression) pressure

How do we capture or “record it?”

Image source http://www.physicsclassroom.com/Class/sound/u11l1c.html viewed June 20, 2007


Recording Begins in the 1800’s

Wax cylinders Capturing acoustical

energy and storing it on some medium for later replay.

Transduction– The conversion of one

form of energy into another, e.g., acoustical into mechanical shown here.


Recording - the Microphone

Mics are TransducersSpeakers are Transducers

What we do in between – e.g.,editing, adjusting, copying,pasting, uploading our audio,eventually has to be retransduced so we hear it.

We need a good signal at thesource of the recording or allother steps are compromised


Recording - the MP3 Recorder

Built in Microphone Records Voice and FM

radio Allows retrieval of

podcasts so you can listen to programs, lectures, music “on the go.”

Let’s try ‘em out!


Recording - Interviews

Review your interview with your partner

Find out more - highlight their interests in art, culture, education

Now, record a discussion, introducing each other and note any ideas either of you may have for using digital audio.


About Audacity

Audacity is a free, easy-to-usedigital audio editor and recorder.

Record live audio. Convert tapes and records

into digital recordings or CDs. Edit Ogg Vorbis, MP3, and

WAV sound files. Cut, copy, splice, and mix

sounds together. Change the speed or pitch of

a recording.


Editing

Easy editing with Cut, Copy, Paste, and Delete. Use unlimited Undo (and Redo) to go back any number of steps. Very fast editing of large files. Edit and mix an unlimited number of tracks. Use the Drawing tool to alter individual sample points. Fade the volume up or down smoothly with the Envelope tool.


Edit Toolbar

All of the buttons on this toolbar perform actions - and with a couple of exceptions, they're all just shortcuts of existing menu items to save you time.

Cut Copy Paste Trim away the audio outside the selection Silence the selected audio Undo Redo


Edit Toolbar

Holding the mouse over a tool will show a "tooltip" in case you forget which one is which.

Zoom In

Zoom Out

Fit selection in window - zooms until the selection just fits inside the window.

Fit project in window - zooms until all of the audio just fits inside the window.


Splitting / Duplicating

Split - Moves the selected region into its own track or tracks, replacing the affected portion of the original track with silence.

Duplicate - Makes a copy of all or part of a track or set of tracks into new tracks. See the figure below:


Audacity – Main Screen Shot


Import and Export with Audacity

Import sound files, edit them, and combine them with other files ornew recordings. Export your recordings in several common fileformats. Import and export WAV, AIFF, AU, and Ogg Vorbis files. Import MPEG audio (including MP2 and MP3 files) with libmad. Export MP3s with the optional LAME encoder library. Create WAV or AIFF files suitable for burning to CD. Import and export all file formats supported by libsndfile. Open raw (headerless) audio files using the “Import Raw” command. Note: Audacity does not currently support WMA, AAC, or most other

proprietary or restricted file formats.


Recording in Audacity


Recording in Audacity

Audacity can record live audio through a microphone ormixer, or digitize recordings from cassette tapes, vinylrecords, or minidiscs. With some sound cards, it can alsocapture streaming audio.

Record from microphone, line input, or other sources. Dub over existing tracks to create multi-track recordings. Record up to 16 channels at once (requires multi-channel

hardware). Level meters can monitor volume levels before, during, and after

recording.


Removing Background Noise

Get Noise Profile– 2-3 seconds noise only

Select Audio to Filter Use Slider to Select How

much noise to filter out Preview until desired

amount is achieved Choose Remove Noise


Other E-learning Technologies

Digital Cameras The Ipod Craze MP3 Recorders Mobile Technology Digital Video Other Technologies

After Lunch … Digital Audio Blogs/Podcasting


Blogging 101

What is a blog? A blog is a web page Frequently updated posts that are

arranged chronologically The content and purposes of blogs

varies greatly Blog posts are like instant

messages to the web. An Example

– http://trainingforchange.blogspot.com/– http://tfctryouts.blogspot.com/

Many blogs are personal, "what's on my mind" type musings.

Others are collaborative efforts based on a specific topic or area of mutual interest.

Some blogs are for play. Some are for work. Some are both.


More on Blogging

Excellent team/ department/ company/ family communication tools.

They help small groups communicate in a way that is simpler and easier to follow than email or discussion forums.

Use a private blog on an intranet to allow team members to post related links, files, quotes, or commentary.

Set up a family blog where relatives can share personal news.

A blog can help keep everyone in the loop, promote cohesiveness and group culture, and provide an informal "voice" of a project or department to outsiders.

Retrieved from: http://help.blogger.com


How to Start Blogging

Find a free Blog Hosting service like: Blogger or Blogspot

Sign up for a free account Walk through templates

and blog creation Create/edit your profile

information Post your blog Moderate blog postings Let’s try it out!



How to Start Blogging



Signing in with Google

Can use your own existing email

Easy one-time setup Then all your blogs (and

postings) are associated with this email login

Let’s all get signed in

Things to notice– Create posts– Edit posts– Invite others to post– Add photos

Publish audio and video casts to your blog (or another blog that you have the right to post to – thanks marcia for inviting us ….


Uploading our Audio / Podcasting


Conclusion

Feedback from Today Where to from here Unanswered Questions Next workshops? Close

central australian education and training network e-learning project 2007 with bill wade july 17,...

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