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1.发明专利Method and device for encoding and decoding voice signal through vector quantization method 失效通过矢量量化方法编码和解码语音信号的方法和装置
公开(公告)号：JPS61121616A
公开(公告)日：1986-06-09
申请号：JP25099285
申请日：1985-11-11
Applicant: Cselt Centro Studi Lab Telecom
Inventor： MAURITSUIO KOTSUPERI , DANIERE SERENO
CPC classification number: G10L19/038 , G10L19/06 , G10L19/12
Abstract: This method provides a filtering of digital samples of speech signal by a linear-prediction inverse filter, whose coefficients are chosen out of a codebook of quantized filter coefficient vectors, obtaining a residual signal subdivided into vectors. The weighted mean-square error made in quantizing said vectors with quantized residual vectors contained in a codebook and forming excitation waveforms is computed. The coding signal for each block of samples consists of the coefficient vector index chosen for the inverse filter as well as of the indices of the vectors of the excitation waveforms which have generated minimum weighted mean-square error. During the decoding phase, a synthesis filter, having the same coefficients as chosen for the inverse filter, is excited by quantized-residual vectors chosen during the coding phase (FIGS. 1, 2).
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公开(公告)号：JPH0563000B2
公开(公告)日：1993-09-09
申请号：JP25099285
申请日：1985-11-11
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： MAURITSUIO KOTSUPERI , DANIERE SERENO
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公开(公告)号：JPS62147500A
公开(公告)日：1987-07-01
申请号：JP29685586
申请日：1986-12-15
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor： MAURITSUIO KOTSUPERI , DANIERE SERENO
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