Microphone with infrared on/off switch

Details Microphone with infrared on/off switch Microphone with infrared on/off switch

H - Electricity

04

R

H04R 3/00 (2006.01)

Patent

CA 2144782

A microphone including an infrared switch circuit is disclosed. The infrared switch circuit includes an infrared detector for detecting a reflection of an infrared signal off an object such as a human body, and producing an electrical signal. The circuit also includes an amplifier for amplifying the electrical signal and a comparator for determining if the amplified electrical signal is above a predetermined threshold. The switching finally includes a audio switching network for providing the amplified signal as an audio signal if the amplified signal is above a predetermined threshold. The circuit also includes power conservation techniques to improve performance.

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