An adaptive variable bit rate audio encoder and method that examines audio level information and detects various information in the audio data in a psychoacoustic model to create a quantization value and assign a mode tag to a single frame of audio. A bit rate is assigned according to one of three modes,...http://www.google.ca/patents/US7313520?utm_source=gb-gplus-sharePatent US7313520 - Adaptive variable bit rate audio compression encoding
