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NOISE CONTROL DEVICE

  • US 20100150367A1
  • Filed: 10/18/2006
  • Published: 06/17/2010
  • Est. Priority Date: 10/21/2005
  • Status: Active Grant
First Claim
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4-1. The noise control device according to claim 1, whereina plurality of the first noise detection means are provided in the plurality of spaces, respectively,the noise control device further comprising third signal generation means, which are provided respectively corresponding to the plurality of the first noise detection means, each for generating, based on the noise detected by a corresponding one of the first noise detection means, the cancellation signal having a higher frequency than a predetermined frequency, and outputting the generated cancellation signal to one of the sound output means which is provided in a same space as that of the corresponding one of the first noise detection means, andthe first signal generation means generates, based on the noise detected by one of the plurality of first noise detection means, the cancellation signal having a frequency no higher than the predetermined frequency, and outputs the generated cancellation signal to each of the plurality of sound output means.

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