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Method and apparatus for adaptively reducing the level of noise in an acquired signal

  • US 5,924,980 A
  • Filed: 03/11/1998
  • Issued: 07/20/1999
  • Est. Priority Date: 03/11/1998
  • Status: Expired due to Term
First Claim
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1. A method for reducing the level of an undesired noise component in an acquired signal having a desired signal component, comprising the following steps:

  • acquiring a signal;

    generating a synthetic reference signal that is modeled to exhibit a correlation with the desired signal component of the acquired signal;

    applying to one input of an adaptive filter arrangement said acquired signal, and to another input of said adaptive filter arrangement said synthetic reference signal; and

    operating said adaptive filter arrangement in a feedback manner, so that the adaptive filter arrangement iteratively adjusts the applied synthetic reference signal so as to progressively generate as an output of the filter arrangement a more accurate approximation of the desired signal component of the acquired signal.

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