Speakerphone control circuit

Details Speakerphone control circuit Speakerphone control circuit

H - Electricity

04

M

379/81

H04M 1/60 (2006.01) H04B 3/20 (2006.01) H04M 9/08 (2006.01)

Patent

CA 1207928

- 26 - SPEAKERPHONE CONTROL CIRCUIT Abstract There is disclosed a speakerphone circuit employing precision peak detectors in which the processing of talk down signals and switch guard signals is partitioned in order to accurately control complementary switched gain in the transmit and receive channels to achieve improved sensitivity to talk down switching action by setting a low switching threshold.

446470

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