Voice encoder for generating natural background noise

Details Voice encoder for generating natural background noise Voice encoder for generating natural background noise

1998-06-08

2000-10-17

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704210, 704214, 704207, G10L 1100

Patent

active

061345199

ABSTRACT:
A voice encoder using a VOX (voice operated transmission) control has a pitch analyzer and a high-efficiency encoder. When a voiced state is detected in an input audio signal, the input audio signal and pitch information extracted therefrom are encoded by the high-efficiency encoder and transmitted to a voice decoder. When an unvoiced state is detected, the high-efficiency encoder encodes the input audio signal without a gain of the pitch information. The encoded data without using the gain information is transmitted after a post-amble signal to obtain natural background noise.

REFERENCES:
patent: 5890108 (1999-03-01), Yeldener
patent: 6029134 (2000-02-01), Nishigushi et al.

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