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Apparatus and method for improved voice activity detection

  • US 7,072,828 B2
  • Filed: 05/13/2002
  • Issued: 07/04/2006
  • Est. Priority Date: 05/13/2002
  • Status: Expired due to Fees
First Claim
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1. An apparatus for communicating samples from an interface to an encoder, comprising:

  • a queue for storing samples received from the interface;

    an energy detector for identifying samples received from the interface that contain silence and for transmitting a signal to a control circuit identifying a silence interval upon a predefined number of silence samples being identified;

    an analyzer responsive to the received samples for adjusting the number of samples stored in the queue and the number of silence samples identified by the energy detector by calculating an average time between words to make the adjustment to the queue and the number of samples; and

    the control circuit accessing samples from the queue and transmitting the accessed samples to the encoder until the signal from the energy detector is received.

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