Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1995-12-26
1998-08-18
Dorvil, Richemond
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704219, 704220, G10L 900
Patent
active
057971218
ABSTRACT:
A vocoder (10) includes a digital signal processor (18) and a vector quantizer (28) implemented in hardware external to the digital signal processor (18). The vector quantizer (28) includes an analysis codebook (32) having a multitude of scalar quantized code vectors (60). A frame of digitized speech is translated into speech parameters, which are then scalar quantized to form a source vector. This scalar quantized source vector is then vector quantized in the vector quantizer (28) prior to transmission into a communication channel (22). A separate synthesis codebook (30) is used in decompressing vocoded speech received from the communication channel (22).
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Fette Bruce Alan
Lee Shirley Hsiao-Mei
Bogacz Frank J.
Dorvil Richemond
Motorola Inc.
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