Encoding method, encoding apparatus, decoding method,...

Details Encoding method, encoding apparatus, decoding method,... Encoding method, encoding apparatus, decoding method,...

2007-05-01

2007-05-01

Azad, Abul K. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C704S230000, C375S240030, C382S244000

Reexamination Certificate

active

10344624

ABSTRACT:
In a quantization step information encoding unit, an average value of the quantization step information is found in an approximate shape extraction unit (20), first of all, from one set of a given number of unitary quantization units to another. In an approximate shape encoding unit (21), the approximate shape information is vector-quantized. In a residual signal computing unit (22), the residual signals between the quantization step information and the quantized approximate shape vector are computed. In a residual signal encoding unit (23), the residual signals are variable length encoded, and the so encoded residual signals and the vector quantized approximate shape information are output.

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Peter Craven and Michael Gerzon, Lossless Coding for Audio Discs; J. Audio Eng. Socl, vol. 44, No. 9, Sep. 1996.

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