ref: b4b2a3a2186b4aecea959d3bdd2f935baf8badc9
dir: /TODO/
- 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)