A noise-controlled communication apparatus

Details A noise-controlled communication apparatus A noise-controlled communication apparatus

H - Electricity

04

B

H04B 1/40 (2006.01) H04B 3/20 (2006.01) H04M 9/08 (2006.01) H04M 9/10 (2006.01)

Patent

CA 2145703

A noise-controlled communication apparatus reduces an annoying effect to the other speaker due to an ambient noise on the transmitting side and improves articulation of the receiving voice under noise. In a noise- controlled communication apparatus, a transmitting level detector detects a transmitting level above a threshold. Then, a mode controller enters to a transmitting mode. When the mode controller enters to the transmitting mode, a control mode switching circuit reduces attenuation of a transmitting signal. When the noise-controlled communication apparatus detects a receiving signal, the mode controller enters to a receiving mode for passing through the receiving signal. When the transmitting signal and receiving signal are not detected, the mode controller enters to an idle mode for attenuating the transmitting signal and receiving signal to half.

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