Speech coding apparatus

Details Speech coding apparatus Speech coding apparatus

1998-06-26

1999-12-21

Wieland, Susan

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704215, 704219, G10L 302, G10L 900

Patent

active

060061766

ABSTRACT:
A speech coding apparatus which allows a speech decoding apparatus to output a more familiar background noise. The speech coding apparatus includes a voice presence/absence discrimination section, a coding section, a unique word production section, and a data switching section which selectively outputs one of outputs of the coding section and the unique word production section as an output of the speech coding apparatus in response to a result of discrimination of the voice presence/absence discrimination section. The speech coding apparatus further includes an amplitude level discrimination section, a clip processing section and an input switching section. The input switching section selects, when the input speech signal includes voice, the input speech signal, but when the input speech signal includes no voice and a code for updating background noise is to be produced, the input switching section selects the input speech signal after clip processing.

REFERENCES:
patent: 5553192 (1996-09-01), Hayata
patent: 5630012 (1997-05-01), Nishiguchi et al.
patent: 5696819 (1997-12-01), Suizu et al.

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