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Voice processing system

  • US 6,453,020 B1
  • Filed: 02/23/1998
  • Issued: 09/17/2002
  • Est. Priority Date: 05/06/1997
  • Status: Expired due to Term
First Claim
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1. A voice processing system having multiple telephony channels for making and receiving telephony calls including:

  • means for communicating with a server including a voice recognition system for processing said telephony calls, said server being remote from said voice processing system;

    means for playing a prompt to a caller over a telephone channel;

    a voice activity detector for detecting caller input on said telephone channel;

    means responsive to said detection of voice activity for initiating transmission of the caller input to said remote voice recognition system;

    means for performing echo cancellation for said telephone call; and

    a line interface unit which incorporates both said voice activity detector and said echo cancellation means, whereby the caller input is processed by said echo cancellation means prior to being processed by said voice activity detector and prior to the initiation of the caller input to said remote voice recognition system.

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