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1. 发明授权

US06269332B1 Method of encoding a speech signal 有权
标题翻译：语音信号编码方法
公开(公告)号：US06269332B1
公开(公告)日：2001-07-31
申请号：US09319103
申请日：1999-05-28
申请人： Wee Boon Choo , Soo Ngee Koh
发明人： Wee Boon Choo , Soo Ngee Koh
IPC分类号： G10L1106
CPC分类号： G10L19/0212 , G10L19/10 , G10L25/93
摘要： A method of coding speech is disclosed in which the speech signal is sampled and divided into a plurality of frames upon which multi-band excitation analysis is performed to derive a fundamental pitch, a plurality of voiced/unvoiced decisions and amplitudes of harmonics within the bands. The harmonic amplitudes are split into a first group of a fixed number of harmonics and a second group of the remainder of harmonics and these are separately transformed using the Discrete Cosine Transform for the first group and Non-Square Transform for the second group, the resulting transform coefficients being vector quantized to form a plurality of output indices. A decoding method and apparatus for performing both encoding and decoding methods are also disclosed.
摘要翻译：公开了一种编码语音的方法，其中语音信号被采样并被划分成多个帧，在多个帧上执行多频带激励分析以导出基音，多个有声/无声的决定和频带内的谐波振幅。谐波幅度被分成固定数量的谐波的第一组和谐波的剩余部分的第二组，并且使用第一组的离散余弦变换和第二组的非方波变换分别变换这些谐波变换系数被矢量量化以形成多个输出索引。还公开了一种用于执行编码和解码方法的解码方法和装置。

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