Voice/data discriminator

Details Voice/data discriminator Voice/data discriminator

1997-03-31

1999-12-07

Dorvil, Richemond

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704212, G10L 908

Patent

active

059998989

ABSTRACT:
A method and apparatus for discriminating between voice and voiceband data (fax/modem data) in an input signal from a voiceband channel, which is available by blocks (packets) of samples. Said discrimination is based upon the computation of two characteristics of the input signal: an autocorrelation function and a power variation function, the combination of which provides a discrimination factor which is highly accurate while requiring a low computing power.

REFERENCES:
patent: 4815136 (1989-03-01), Benvenuto
patent: 4815137 (1989-03-01), Benvenuto
patent: 4912765 (1990-03-01), Virupaksha
patent: 5295223 (1994-03-01), Saito
patent: 5315704 (1994-05-01), Shinta et al.

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