M4A/AAC playback makes some weird sounds

[vladkorotnev]

The m4a decoder makes a lot of high-frequency crackle and bleeping on some files.

Test case: http://vladkorotnev.me/webtunes/player.php?list=74&track=1
Listen to tracks 1 and 2.
Expected behavior: acceptable quality playback.
Resulting behavior: music along with bleeps and cracks around 10kHz and almost missing high frequencies.
The same files sound awesome in QuickTime 7.

The tracks can be downloaded (play a track and then click the right "down arrow" key in the player control display) and played in QuickTime to prove that it's not the files being low-quality.

Great JS plugin otherwise though, enjoyed building with it, thanks Audiocogs!

[vladkorotnev]

Sorry, my bad! Moved to audiocogs/aac.js#4.