A speech coding and decoding system, where the system is operated under a known code-excited linear prediction (CELP) coding method. The CELP coding is achieved by selecting an optimum pitch prediction residual vector P from an adaptive codebook and the corresponding first gain, and at the same...http://www.google.fr/patents/US5799131?utm_source=gb-gplus-shareBrevet US5799131 - Speech coding and decoding system
