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VOICE INPUT APPARATUS

  • US 20100142743A1
  • Filed: 11/13/2009
  • Published: 06/10/2010
  • Est. Priority Date: 12/05/2008
  • Status: Active Grant
First Claim
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1. A voice input apparatus comprising:

  • a first housing; and

    a microphone unit which is disposed in the inside of the first housing;

    wherein the microphone unit includes;

    a second housing in which a first sound hole and a second sound hole are formed;

    a diaphragm which is disposed in the inside of the second housing; and

    an electric circuit portion which processes an electric signal that is generated based on a vibration of the diaphragm,wherein, in the first housing, a first opening portion which communicates with the first sound hole and a second opening portion which communicates with the second sound hole are formed;

    a first sound guide space which guides a sound outside the first housing from the first opening portion to a first surface of the diaphragm and a second sound guide space which guides a sound outside the first housing from the second opening portion to a second surface, that is, an opposite surface of the first surface of the diaphragm are formed;

    the electric circuit portion is disposed in either one of the first sound guide space and the second sound guide space; and

    an acoustic resistance portion which adjusts at least one of a frequency characteristic of the first sound guide space and a frequency characteristic of the second sound guide space is formed.

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