Speech detector for automatic level control systems

Details Speech detector for automatic level control systems Speech detector for automatic level control systems

1989-11-02

1990-12-04

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including gain control means

307358, 381 46, H03G 330

Patent

active

049756575

ABSTRACT:
A speech detection circuit uses a peak detector and a valley detector including offset voltages to reliably detect the absence or presence of speech at audio base band level. This circuit provides a pulse train output when speech is detected which may be used to control an automatic gain control circuit.

REFERENCES:
patent: 3502993 (1970-03-01), Schurzinger et al.
patent: 4631737 (1986-12-01), Davis et al.

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