Vector quantizer with first quantization using input and base ve

Details Vector quantizer with first quantization using input and base ve Vector quantizer with first quantization using input and base ve

1997-07-10

1999-11-02

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704501, G10L 302

Patent

active

059787589

ABSTRACT:
A first vector quantizer generates output codevectors corresponding in number to a number determined by a predetermined number of bits through linear coupling of integer coefficients of a predetermined number of base vectors stored in a base vector memory. A second vector quantizer determines coefficients of the base vectors according to at least one of output indexes of the output codevectors.

REFERENCES:
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patent: 5636322 (1997-06-01), Ono
patent: 5659659 (1997-08-01), Kolesnik et al.
patent: 5675702 (1997-10-01), Gerson et al.
Conway et al., "Fast Quantizing and Decoding Algorithms for Lattice Quantizers and Codes", IEEE Transactions on Information Theory, vol. IT-28, No. 2, 227-232 (1982).
Leblanc et al., "Structured Codebook Design in CELP", Proc. International Mobile Satellite Conference, pp. 667-672 (1991).

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