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Unfortunately not all browsers support the same formats, so you need more than one format to have your sound work on multiple browsers.
== Everyone ==
* http://en.wikipedia.org/wiki/Advanced_Audio_Coding
* http://en.wikipedia.org/wiki/Variable_bitrate
* http://www.techterms.com/definition/sampling
= Lab =
This is a marked lab. Please submit it using Moodle (Lab3Lab4).
We're going to use this song to play with, because there are no copying rules associated with it: http://www.openbsd.org/lyrics.html#36
=== Part 1 ===
* Go to http://audacity.sourceforge.net/ and download and install the newest windows version, and install it.
* Download the pond-erosa puff ogg file.
* Open that file in audacity. On windows the menu option is "open", on newer versions in linux it's "import".
* Try to export it as mp3. You may get an error saying that lame is not found. Go back to the audacity page and download and install lame for audacity for windows.
* Export as mp3 as well.
* The windows version can't export Export as Flac so I will give you a copy on a usb stick of the Flac versionflac as well.
* Make a screenshot with the folder with all 4 files and audacity with the original open.
* Submit that screenshot
We're going to blip out some words we don't like in the song.
* Pick a word you don't like (for example "free") that's mentioned at least 3 times in the song and find where it appears in audacity, make a note of the times in a text file. The lyrics are on the website, should make that a little easier.
* Note: you can select a region of the song and play only that.
* Add a new track (mono should do)
* Submit your text file and the screenshot.
== Compression & browser support ==
On linux you can compress things with tar cvzf dest.tar.gz sourcefile On windows you'll have to download and install winrar (or another app if you prefer).
* In the third column use the HTML5 <audio> tag to allow the user to play that version of the audio file.
* In the fourth column make a note of which browsers that worked in. In the lab you can test with Firefox, IE9, Chrome,and Safari.
* If no audio files work in IE - try to upload your HTML and audio files to matrix and view the page there.
* Submit the HTML page (without the big files).
