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Machine and operating environment diagnostics, detection and profiling using sound

  • US 7,647,827 B2
  • Filed: 05/28/2008
  • Issued: 01/19/2010
  • Est. Priority Date: 04/21/2006
  • Status: Active Grant
First Claim
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1. A method for source profiling using pressure waves, the method comprising:

  • profiling known pressure wave sources using time domain characteristics, wherein profiles of the known pressure wave sources correspond to respective cyclical pressure waves;

    acquiring pressure wave data;

    analyzing acquired pressure wave data by performing an audio-based autocorrelation analysis on the acquired pressure wave data to match the acquired pressure wave data to a matching profile of a known pressure wave source corresponding to a respective cyclical pressure wave from among the profiles of the known pressure wave sources; and

    detecting a source to be the known pressure wave source of the matching profile upon determining the match.

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