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Microphone with internal damping

  • US 7,415,121 B2
  • Filed: 10/29/2004
  • Issued: 08/19/2008
  • Est. Priority Date: 10/29/2004
  • Status: Expired due to Fees
First Claim
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1. A microphone, comprising:

  • a housing;

    a diaphragm mounted in said housing;

    a backplate mounted substantially parallel to and spaced apart from said diaphragm, said backplate having at least one hole through said backplate; and

    a cover contacting a surface portion of said backplate to cover up said at least one hole in said backplate, said cover having at least one opening through said cover, said at least one opening having a predetermined size, shape, and/or location to control a frequency response of said microphone, said at least one opening being smaller than said at least one hole, said cover having a footprint that is less than a footprint of said backplate, wherein said cover includes a clip portion extending away from said backplate at an angle, said clip portion providing a spring-load for said cover.

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