Encoding apparatus and decoding apparatus

Details Encoding apparatus and decoding apparatus Encoding apparatus and decoding apparatus

2005-07-26

2005-07-26

Abebe, Daniel (Department: 2655)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S222000

Reexamination Certificate

active

06922667

ABSTRACT:
An encoding apparatus includes a band gain encoding section for calculating an average amplitude of a frequency spectrum stream corresponding to each of a plurality of frequency bands so as to generate a first code representing the average amplitude of the frequency spectrum stream; an encoding band determination section for determining at least one frequency band, for which the corresponding frequency spectrum stream is to be quantized and encoded from among the plurality of frequency bands; a spectrum encoding section for quantizing and encoding the frequency spectrum stream of each of the at least one frequency band determined by the encoding band determination section so as to generate a second code; and an encoded stream generation section for generating an encoded stream based on the first code and the second code.

REFERENCES:
patent: 5826226 (1998-10-01), Ozawa
patent: 6496796 (2002-12-01), Tasaki et al.
patent: 6856955 (2005-02-01), Ozawa
patent: WO 97/15916 (1997-05-01), None
patent: WO 99/04506 (1999-01-01), None
Copy of International Search Report dated Aug. 13, 2002.
Copy of Australian Examination Report dated Nov. 6, 2003.

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