ref: e0066b4725069ce120acde8d584ade9bc2d3d0cf
dir: /TODO/
- optimize quantization bias - optimize codebook list (section_data) - optimize CPE windows grouping - faster mdct in blockswitch - Add PNS - Add IS - Add bit reservoir control - Add resampler and downmixer (hans-juergen, Oct 17, 2004) - Add HE AAC (hans-juergen, Oct 17, 2004) - Test TNS(arcen, Apr 8th, 2012)