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Secondary Path Modeling for Active Noise Control

  • US 20080144853A1
  • Filed: 12/06/2007
  • Published: 06/19/2008
  • Est. Priority Date: 12/06/2006
  • Status: Active Grant
First Claim
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1. A method for modeling a secondary path for an active noise control system, comprising:

  • receiving a reference signal;

    filtering the reference signal with an initial secondary path model to obtain a filtered reference signal;

    calculating an autocorrelation matrix from the filtered reference signal;

    calculating a plurality of eigenvalues from the autocorrelation matrix;

    calculating a maximum difference between the plurality of eigenvalues;

    iterating a test model to determine an optimized secondary path model having a plurality of optimized eigenvalues that have a minimized difference that is less than the maximum difference of the plurality of eigenvalues, wherein the optimized secondary path model may be utilized in the active noise control system.

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