An anti-noise-electret pick-up

Details An anti-noise-electret pick-up An anti-noise-electret pick-up

H - Electricity

04

R

H04R 19/01 (2006.01) H04R 1/08 (2006.01)

Patent

CA 2304318

The invention is related to an anti-noise electret pick-up having a tubular body, the tubular body is provided with a front cap which has a sound through hole, and a rear cap, there is an electret diaphragm, a back electrode plate and a back electrode base within the tubular body, wherein said tubular body consists of a front tubular body and a back tubular body joining up each other; said diaphragm is located in said front tubular body; said rear cap of said tubular body has at least one sound through hole; and electronic device are located within said back tubular body. Since the front tubular body has sound through holes towards opposite direction and the distance between them can be very close, and there is a fixed means on the back tubular body, the pick-up can be used in a high noise environment and has a higher environmental noise immunity.

L'invention concerne un enregistreur antibruit à électret équipé d'un corps tubulaire sur lequel sont disposés des couvercles avant et arrière dont le couvercle avant présente un orifice traversant auditif. Cet enregistreur renferme une membrane de vibration, une plaque arrière et un siège arrière et le corps tubulaire est formé par l'union du corps tubulaire avant et du corps tubulaire arrière. La membrane de vibration est placée dans ce corps tubulaire avant et le couvercle arrière dudit corps tubulaire comprend au moins un trou traversant auditif. Un dispositif électronique est placé dans le corps arrière. Comme le corps tubulaire a des trous traversants auditifs orientés en direction opposée, que la distance intermédiaire peut être très petite et que des moyens fixes reposent sur le corps tubulaire arrière, l'enregistreur peut être utilisé dans un environnement très bruyant et présente une immunité contre le bruit améliorée.

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