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VIBRATION SENSOR AND ACOUSTIC VOICE ACTIVITY DETECTION SYSTEMS (VADS) FOR USE WITH ELECTRONIC SYSTEMS

  • US 20140188467A1
  • Filed: 08/05/2013
  • Published: 07/03/2014
  • Est. Priority Date: 05/01/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a first signal at a first detector and a second signal at a second detector, wherein the first signal is different from die second signal;

    determining the first signal corresponds to voiced speech when energy resulting from at least one operation on the first signal exceeds a first threshold;

    determining a state of contact of the first detector with skin of a user;

    determining the second signal corresponds to voiced speech when a ratio of a second parameter corresponding to the second signal and a first parameter corresponding to the first signal exceeds a second threshold; and

    one of generating a voice activity detection (VAD) signal to indicate a presence of voiced speech when the first signal corresponds to voiced speech and the state of contact is a first state, and generating the VAD signal when either of the first signal and die second signal correspond to voiced speech and the state of contact is a second state.

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