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Adaptation performance improvements for active control of sound or vibration

  • US 6,856,920 B2
  • Filed: 02/25/2004
  • Issued: 02/15/2005
  • Est. Priority Date: 02/27/2001
  • Status: Active Grant
First Claim
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1. A method for reducing sensed physical variables including the steps of:

  • a) generating a plurality of control commands as a function of the sensed physical variables;

    b) generating an estimate of a relationship between the sensed physical variables and the control commands, wherein the estimate is used in said step a) in generating the plurality of control commands;

    c) sequentially adding a dither signal to each of the plurality of control commands;

    d) measuring a response to said step c); and

    e) updating the estimate of the relationship based upon said step d).

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