Noise cancelling acoustical improvement to wireless...

H - Electricity – 04 – M

Patent

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Details

H04M 1/03 (2006.01) H04M 1/19 (2006.01) H04R 1/02 (2006.01) H04R 1/28 (2006.01)

Patent

CA 2269027

A cellular telephone (8) for reducing background noise includes a housing having a receiver portion and a speaker portion. The receiver portion has a voice port (13) and a noise port (10). A microphone isolator (9) is located within the receiver portion and at least one noise cancelling microphone (12) has a front end and back end enclosed by the microphone isolator (9). A windscreen (14) is placed in front of the microphone internally behind the voice port (13). The telephone includes an acoustical port (15) which permits a pressure gradient noise porting, placed at the back end of the microphone and internally behind the noise port.

Un téléphone cellulaire (8) qui permet de réduire le bruit de fond comprend un boîtier comportant une partie réceptrice et une partie haut-parleur. La partie réceptrice présente un accès vocal (13) et un accès bruit (10). Un isolateur (9) de microphone est disposé à l'intérieur de la partie réceptrice, et au moins un microphone à élimination de bruit (12) présente une extrémité avant et une extrémité arrière entourées par l'isolateur (9). Un pare-vent (14) est placé devant le microphone et, intérieurement, derrière l'accès vocal (13). Le téléphone comporte un accès acoustique (15) qui permet la formation d'un point d'accès du bruit à gradient de pression, placé à l'extrémité arrière du microphone et, à l'intérieur, derrière l'accès bruit.

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