SPEECH AND MUSIC SIGNAL CODER/DECODER

摘要

A voice/music signal encoder/decoder having a band-division structure for we ll encoding voice/music signals over the full band. A residual vector is generated by means of an inverted filter (230 ) from a differential vector outputted from a first differential unit (180). A band selecting circuit (25 0) generates n sub-vectors from an orthogonally-transformed residual vector by using components contained in an arbitrary band. An orthogonal transformatio n coefficient quantizing circuit (260) quantizes the n sub-vectors.