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System and method for comparing signals

  • US 6,622,118 B1
  • Filed: 06/12/2001
  • Issued: 09/16/2003
  • Est. Priority Date: 03/13/2001
  • Status: Expired due to Term
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1. A method for comparing a first signal and a second signal, the method comprising,applying a first filter to the first signal, applying a second filter to the second signal, constraining the first filter and the second filter to minimize the energy difference between the filtered first signal and the filtered second signal and based on a model response having a model magnitude and a model phase, and, determining signal components for which the energy difference exceeds a threshold.

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