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Ear microphone apparatus and method

  • US 6,671,379 B2
  • Filed: 07/31/2001
  • Issued: 12/30/2003
  • Est. Priority Date: 03/30/2001
  • Status: Active Grant
First Claim
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1. An earset, comprising:

  • a housing positionable with respect to an ear of a person;

    a microphone disposed with respect to the housing for insertion into the ear of a person, the microphone operable to detect a change in air pressure within the ear while the person speaks and to produce an electrical microphone signal corresponding to the internally detected change in air pressure;

    a speaker disposed with respect to the housing and operable to produce a sound corresponding to an electrical speaker signal input to the speaker; and

    a circuit coupled to receive the microphone signal produced by the microphone and the electrical speaker signal is input to the speaker, and operable to produce a corrected microphone signal having a reduced feedback component of the microphone signal, the feedback component resulting from the detection by the microphone of the sound produced by the speaker wherein the circuit includes;

    an amplifier for amplifying the microphone signal produced by the microphone;

    an amplifier for amplifying the electrical speaker signal received by the circuit and outputting an electrical feedback indication signal; and

    a combining means for combining the amplified microphone signal and the feedback indication signal to produce the corrected microphone signal.

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