公开(公告)号：US07630890B2

公开(公告)日：2009-12-08

申请号：US10780899

申请日：2004-02-19

申请人： Chang-yong Son ,  Sang-won Kang ,  Yong-won Shin ,  Thomas R. Fischer

发明人： Chang-yong Son ,  Sang-won Kang ,  Yong-won Shin ,  Thomas R. Fischer

IPC分类号： G10L19/00 ,  G10L19/12

CPC分类号： G10L19/0212 ,  G10L19/06

摘要： A block-constrained Trellis coded quantization (TCQ) method and a method and apparatus for quantizing line spectral frequency (LSF) parameters employing the same in a speech coding system wherein the LSF coefficient quantizing method includes: removing the direct current (DC) component in an input LSF coefficient vector; generating a first prediction error vector by performing inter-frame and intra-frame prediction for the LSF coefficient vector, in which the DC component is removed, quantizing the first prediction error vector by using the BC-TCQ algorithm, and by performing intra-frame and inter-frame prediction compensation, generating a quantized first LSF coefficient vector; generating a second prediction error vector by performing intra-frame prediction for the LSF coefficient vector, in which the DC component is removed, quantizing the second prediction error vector by using the BC-TCQ algorithm, and then, by performing intra-frame prediction compensation, generating a quantized second LSF coefficient vector; and selectively outputting a vector having a shorter Euclidian distance to the input LSF coefficient vector between the generated quantized first and second LSF coefficient vectors.

摘要翻译： 块约束网格编码量化（TCQ）方法和用于量化在语音编码系统中采用该频谱频率频率（LSF）参数的线谱频率（LSF）参数的方法和装置，其中LSF系数量化方法包括：去除直流（DC）分量 输入LSF系数向量; 通过对其中去除了DC分量的LSF系数向量进行帧间和帧内预测来生成第一预测误差向量，通过使用BC-TCQ算法量化第一预测误差向量，并且通过执行帧内 和帧间预测补偿，生成量化的第一LSF系数向量; 通过对去除了DC分量的LSF系数向量进行帧内预测，​​通过使用BC-TCQ算法对第二预测误差向量进行量化，然后通过进行帧内预测补偿来生成第二预测误差矢量 产生量化的第二LSF系数矢量; 并且在生成的量化的第一和第二LSF系数向量之间选择性地输出具有较短的欧几里德距离的向量到输入的LSF系数向量。