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Audio reproduction system

  • US 5,481,615 A
  • Filed: 04/01/1993
  • Issued: 01/02/1996
  • Est. Priority Date: 04/01/1993
  • Status: Expired due to Fees
First Claim
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1. A self-equalizing audio headset system, said system comprisinginput means for receiving a desired signal,sensor means adapted to provide a sensing signal related to the sound at the listener'"'"'s ear,equalization filter means adapted to respond to said desired signal and produce a modified signal,acoustic actuator means adapted to respond to a drive signal derived from said modified signal,weighting filter means adapted to provide a model of the response of said sensor means, and delay means,said system characterized in that said equalization filter means is continuously adapted to maintain said sensing signal close to a desired sensor signal obtained by passing said desired signal through said weighting filter means and said delay means, said desired sensor signal thereby corresponding to a delayed and filtered version of said desired signal enabling the system to produce the desired sound at the listener'"'"'s ear.

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