Feedback compensation method and circuit for an acoustic amplification system, and hearing aid device employing same

  • US 20040125966A1
  • Filed: 09/10/2003
  • Published: 07/01/2004
  • Est. Priority Date: 09/13/2002
  • Status: Abandoned Application
First Claim
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1. A feedback compensator for use in an acoustic amplification system to compensate feedback that acts on an input signal, upon amplification of said input signal, due to a feedback path from an amplified output signal, said feedback compensator comprising:

  • an adaptive feedback compensation filter that generates a compensation signal, from said amplified output signal, for compensating said feedback, said compensation signal being combined with said input signal; and

    a frequency-limiting filter connected relative to said adaptive feedback compensation filter to limit a frequency range within which said adaptive feedback compensation filter compensates said feedback, said frequency-limiting filter having a filter function that is adaptable during compensation of said feedback by said adaptive feedback compensation filter.

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