Voice level controller

Details Voice level controller Voice level controller

1995-02-03

1998-11-17

Chiang, Jack

Telephonic communications

Substation or terminal circuitry

Amplifying

379165, H04M 100

Patent

active

058387854

ABSTRACT:
A voice level controller comprises a discriminator for determining whether speech is transmitted through an analog line or not, and a control circuit for controlling a speech level in accordance with the output of the discriminator.

REFERENCES:
patent: 4258433 (1981-03-01), Herschtal et al.
patent: 4939774 (1990-07-01), Sawada
patent: 5070524 (1991-12-01), Mano
patent: 5173933 (1992-12-01), Jabs et al.

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