发明名称 |
Verfahren und Vorrichtung für digitale Sprachkodierer mit quantisierten Spectralparametern. |
摘要 |
A method of and a device for speech signal digital coding are described, where spectral parameters are quantized at each frame in order to exploit the actual correlation inside a frame or between contiguous frames. The quantization devices (DQ) recognize strongly correlated signal periods by using a first set of indexes (j1), representing the parameters and provided by the spectral analysis circuits (ABT, ALT), and in these periods they convert the same indexes into a second set of indexes (j4) which can be coded with a lower number of bits and which is inserted into the coded signal in place of the first set. <IMAGE> |
申请公布号 |
DE628946(T1) |
申请公布日期 |
1995.08.03 |
申请号 |
DE19940108873T |
申请日期 |
1994.06.09 |
申请人 |
SIP-SOCIETA ITALIANA PER L'ESERCIZIO DELLE TELECOMUNICAZIONI P.A., TURIN/TORINO, IT |
发明人 |
SERENO, DANIELE, TORINO, IT |
分类号 |
G10L19/08;G10L19/00;G10L19/04;G10L19/06;G10L19/12;(IPC1-7):G10L9/14;G10L7/02;G10L9/08;G10L5/00 |
主分类号 |
G10L19/08 |
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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