×

Audio path diagnostics

  • US 20050008177A1
  • Filed: 07/12/2004
  • Published: 01/13/2005
  • Est. Priority Date: 07/11/2003
  • Status: Active Grant
First Claim
Patent Images

1. A method for detecting a change in the performance of an audio signal processing path, comprising:

  • selecting a characteristic of the audio signal indicative of its energy content;

    determining first and second predetermined values of the selected energy characteristic at respective first and second audio signal frequency bands;

    calculating a ratio of said first and second predetermined values for a reference time period and a test time period; and

    comparing the ratio at the reference time period with the ratio of the test time period to determine a performance change in the audio path.

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