×

Method and apparatus for detecting audio signals

  • US 8,116,463 B2
  • Filed: 12/27/2010
  • Issued: 02/14/2012
  • Est. Priority Date: 10/15/2009
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting audio signals, the method comprising:

  • dividing an input audio signal into multiple audio signal frames;

    inspecting every audio signal frame to check whether it is a foreground signal frame or a background signal frame;

    adding a step length value to a background frame counter when a background signal frame is detected;

    obtaining a music eigenvalue of the background signal frame, and adding the music eigenvalue to an accumulated background music eigenvalue; and

    comparing the accumulated background music eigenvalue with a threshold when the background frame counter reaches a preset number, and determining the signal as background music if the accumulated background music eigenvalue fulfills a threshold decision rule.

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