http://milkmidi.blogspot.com/2010/07/as3-scratch.html 我由呢個 demo 開始睇
http://www.anttikupila.com/flash/soundfx-out-of-the-box-audio-filters-with-actionscript-3/ 有呢個好正既 sound filter, 識做 echo, phase, feedback, cutoff, resonance 個d effect
用 pixelBlender Mix 歌
http://www.kaourantin.net/2008/10/audio-mixing-with-pixel-bender.html#4759002868008324481
http://blogs.adobe.com/kevin.goldsmith/2009/08/pixel_bender_au.html
載入 mp3