Microphone with internal damping

Method and apparatus are disclosed for damping the resonance frequency in a microphone. The method and apparatus of the invention involve providing an elastomeric frame to support the backplate. The elastomeric frame forms a substantially air tight seal around the backplate. A hole is formed in the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Mögelin, Raymond, Dubbeldeman, Eddy, Appel, Ronald
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:Method and apparatus are disclosed for damping the resonance frequency in a microphone. The method and apparatus of the invention involve providing an elastomeric frame to support the backplate. The elastomeric frame forms a substantially air tight seal around the backplate. A hole is formed in the backplate and a cover having an opening therein is placed over the hole in the backplate. The frequency response of the microphone may then be controlled by precisely controlling the size, shape, and/or location of the opening in the cover overlaying the hole. The cover may also serve as an electrical contact to other components in the microphone.