Adjusting leakage factors of an active noise reduction filter

Adjusting leakage factors of an active noise reduction filter

  • CN 102,187,387 A
  • Filed: 09/22/2009
  • Published: 09/14/2011
  • Est. Priority Date: 10/20/2008
  • Status: Active Application
First Claim
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1. method that is used to operate the active noise reduction system comprises:

  • In response to noise signal, for sef-adapting filter provides filter coefficient;

    Determine leakage factor;

    Level and smooth described leakage factor provides through level and smooth leakage factor;

    The leakage factor that described warp is level and smooth is applied to described filter coefficient modified filter coefficient is provided;

    AndDescribed filter coefficient is applied to sound signal,Wherein said determine to comprise determine the function of leakage factor as the input reference signal frequency.

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