发明名称 |
Method of encoding a speech signal |
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.
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申请公布号 |
US6269332(B1) |
申请公布日期 |
2001.07.31 |
申请号 |
US19990319103 |
申请日期 |
1999.05.28 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
CHOO WEE BOON;KOH SOO NGEE |
分类号 |
G10L11/02;G10L11/00;G10L11/06;G10L19/00;G10L19/02;(IPC1-7):G10L11/06 |
主分类号 |
G10L11/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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