Voice control circuit

Details Voice control circuit Voice control circuit

1975-09-22

1978-01-10

Claffy, Kathleen H.

179 1P, 179 1VC, H03G 330

Patent

active

040680924

ABSTRACT:
In a voice control circuit comprising a variable loss circuit and a voice level detector which is connected to control the variable loss circuit, there is provided a noise control circuit. The noise control circuit comprises a timer which discriminates as noise an input having a constant amplitude and persisting for greater than a greater than a predetermined interval, a noise level detector and a variable attenuator connected on the input side of the voice level detector and which functions to attenuate the voice signal in accordance with the detected level of the noise.

REFERENCES:
patent: 2321986 (1943-06-01), Brown
patent: 2409977 (1946-10-01), Fisher
patent: 2761897 (1956-09-01), Jones
patent: 3286031 (1966-11-01), Geddes
patent: 3448215 (1969-06-01), Engel
patent: 3700811 (1972-10-01), Davidson
patent: 3712959 (1973-01-01), Farrello
patent: 3751602 (1973-08-01), Breeden

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