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User selectable noise canceling for portable microphones

  • US 5,268,965 A
  • Filed: 04/02/1993
  • Issued: 12/07/1993
  • Est. Priority Date: 11/18/1991
  • Status: Expired due to Fees
First Claim
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1. A noise cancelling microphone, comprising:

  • a housing having first and second sides;

    a sound transducer mounted within the housing, the transducer having first and second sound ports coupled to the first and second sides of the housing respectively; and

    mounting means coupled to one side of the housing in the proximity of the second sound port for mounting the microphone to a user so as to selectively and substantially close the second sound port when the microphone is attached to the user.

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