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Directional acoustic signal processor and method therefor

  • US 6,002,776 A
  • Filed: 09/18/1995
  • Issued: 12/14/1999
  • Est. Priority Date: 09/18/1995
  • Status: Expired due to Term
First Claim
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1. A signal processing system for processing waves from a plurality of sources, said system comprising:

  • a plurality of transducer means for receiving waves from said plurality of sources, including echoes and reverberation thereof and for generating a plurality of signals in response thereto, wherein each of said plurality of transducer means receives waves from said plurality of sources including echoes and reverberations thereof, and for generating one of said plurality of signals;

    first processing means for receiving said plurality of signals and for generating a plurality of first processed signals in response thereto, said first processing means comprises;

    a plurality of delay means, each for receiving one of said plurality of signals and for generating a delayed signal in response thereto, anda plurality of first combining means, each for receiving at least one of said plurality of signals and one of said delayed signals not associated with said one of said plurality of signals, and for combining said received delayed signal and said signal, by an active cancellation process, to produce one of said first processed signals; and

    second processing means for receiving said plurality of first processed signals and for generating a plurality of second processed signals in response thereto, wherein each of said second processed signals represents waves from one different source, said second processing means including feedback means for supplying said plurality of second processed signals to said second processing means for combining each of said plurality of second processed signals with at least one of said plurality of first processed signals not associated with said each second processed signal to generate said plurality of second processed signals.

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