Temperature-stable electret microphone with embossed, small...

Details Temperature-stable electret microphone with embossed, small... Temperature-stable electret microphone with embossed, small...

H - Electricity

04

R

349/66

H04R 19/00 (2006.01) H04R 19/01 (2006.01)

Patent

CA 1084153

ABSTRACT OF THE DISCLOSURE Temperature-stable electret microphone with a metallized plastic film stretched over a polarized plastic film and fastened to an underlying fixed electrode, the polarized plastic film being on at least one side embossed with a relief pattern, having a smaller area than the underlying fixed electrode and being concentrically fixed to this by the metallized plastic film.

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