A speech encoding method including generating a reconstruction speech vector by using a code vector extracted from a codebook storing a plurality of code vectors for encoding a speech signal. In addition an input speech signal to be encoded is used as a target vector to generate an error vector representing...http://www.google.com.hk/patents/US5926785?utm_source=gb-gplus-share專利 US5926785 - Speech encoding method and apparatus including a codebook storing a plurality of code vectors for encoding a speech signal
