Audio quality perception can be improved in an audio compression system 100 by defining a frequency subband threshold 205. With the frequency subband threshold 205, each frequency subband favorable to the threshold will be allocated at least a predetermined number of bits while frequency subbands...http://www.google.de/patents/US5761636?utm_source=gb-gplus-sharePatent US5761636 - Bit allocation method for improved audio quality perception using psychoacoustic parameters 
