Speech control circuit

Details Speech control circuit Speech control circuit

1980-03-12

1982-03-02

Konick, Bernard

179 81B, H04M 160

Patent

active

043179592

ABSTRACT:
A speech control circuit is disclosed for use in a loudspeaker telephone or a handsfree telephone having a microphone and a speaker, and provides the correct switching of the transmission mode and the reception mode in spite of acoustic coupling between the speaker and the microphone. The disclosed circuit reduces errors in the switching operation and helps to prevent the problem of "noise block".

REFERENCES:
patent: 3751602 (1973-08-01), Breeden

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