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Simplified communication system

  • US 6,295,364 B1
  • Filed: 03/30/1998
  • Issued: 09/25/2001
  • Est. Priority Date: 03/30/1998
  • Status: Expired due to Term
First Claim
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1. A simplex digital voice enhancement communication system comprising in combination:

  • a first acoustic zone;

    a second acoustic zone;

    a first microphone in said first zone;

    a first loudspeaker in said first zone, said first loudspeaker being acoustically coupled to said first microphone;

    a second microphone in said second zone;

    a second loudspeaker in said second zone, said second loudspeaker being acoustically coupled to said second microphone;

    a voice sensitive gated switch having a first mode supplying the output of said first microphone over a first channel to said second loudspeaker, and having a second mode supplying the output of said second microphone over a second channel to said first loudspeaker;

    a first noise sensitive bandpass filter in said first channel;

    a first equalization filter in said first channel;

    a second noise sensitive bandpass filter in said second channel;

    a second noise sensitive bandpass filter in said second channel;

    a second equalization filter in said second channel;

    wherein;

    said first microphone is acoustically coupled to said second loudspeaker;

    said second microphone is acoustically coupled to said first loudspeaker;

    said voice sensitive gated switch comprises two voice activity detector gates, a first gate detecting the output of said first microphone, and a second gate detecting the output of said second microphone.

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