A method and apparatus for perceptual audio coding. The method and apparatus provide high-quality sound for coding rates down to and below 1 bit/sample for a wide variety of input signals including speech, music and background noise. The invention provides a new distortion measure for coding the input...http://www.google.fr/patents/US6704705?utm_source=gb-gplus-shareBrevet US6704705 - Perceptual audio coding