Automatic transmission or recording or transmission and...

Details Automatic transmission or recording or transmission and... Automatic transmission or recording or transmission and...

H - Electricity

04

B

349/1

H04B 11/00 (2006.01) H04B 1/44 (2006.01) H04B 1/46 (2006.01) H04R 17/00 (2006.01)

Patent

CA 1147051

ABSTRACT OF THE DISCLOSURE A system for automatically controlling changeover between recording and recording stop, or transmission and transmission stop, and being employed in a recording or , transmitting device provided with a vibration pick-up type microphone for picking up bone-conducted voice sounds. The automatic changeover between recording and recording stop or transmission and transmission stop is attained by control signals corresponding to impact vibrations other than voice signals uttered by a microphone wearer himself, transmitted through his bones and picked up by the microphone or another controlling microphone. Thus when the controller detects an impact vibration within the desired frequency range, such as a clicking of teeth, the controller will effect the desired changeover. The system is unaffected by background noise or by conversation with people nearby.

356629

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