×

Discontinuous transmission (DTX) controller system and method

  • US 20020172364A1
  • Filed: 12/19/2000
  • Published: 11/21/2002
  • Est. Priority Date: 12/19/2000
  • Status: Active Grant
First Claim
Patent Images

1. A method for controlling discontinuous transmissions, comprising the steps of:

  • determining a voice activity level in a digitized audio signal;

    generating a control signal based on the level of voice activity detected;

    generating active vocoder frames at a predetermined rate in a transmitter if said control signal indicates a first level of speech activity;

    generating inactive vocoder frames if said control signal indicates a second level of speech activity; and

    generating transition frames if said control signal indicates a transition from said first level to said second level, said transition frames comprising background noise information.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×