- fix scalefactor encoding check (-60 .. 60)
- optimize quantization bias
- optimize codebook list (section_data)
- optimize CPE windows grouping
- 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)
- add PCE (Program Config Element) or 4-bit AudioSpecificConfig