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Enhanced automatic speech recognition using multiple directional microphones

  • US 6,219,645 B1
  • Filed: 12/02/1999
  • Issued: 04/17/2001
  • Est. Priority Date: 12/02/1999
  • Status: Expired due to Term
First Claim
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1. A voice activation system for user control of a plurality of automatic speech recognition (ASR) systems, comprising:

  • a plurality of ASR systems;

    a plurality of microphones dispersed within a three-dimensional domain within audible range of a user, wherein each one of the plurality of microphones provides a respective audible voice signal responsive to speech from the user; and

    a controller coupled to said plurality of microphones and to each of said plurality of ASR systems for selectively enabling one of said plurality of ASR systems;

    wherein each one of the plurality of ASR systems is responsive to the controller, and wherein the controller is responsive to each one of the received respective audible voice signals.

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