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AMBIENT NOISE SUPPRESSION

  • US 20180293995A1
  • Filed: 04/05/2017
  • Published: 10/11/2018
  • Est. Priority Date: 04/05/2017
  • Status: Active Application
First Claim
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1. A method for suppressing ambient noise from a captured audio signal, the method comprising:

  • detecting a parameter of a variable ambient noise source;

    determining a first power spectrum representing the variable ambient noise source based on the detected parameter, the first power spectrum being determined independent of the captured audio signal;

    determining a second power spectrum representing the captured audio signal;

    comparing the first power spectrum to the second power spectrum to identify at least one frequency range where net power of the first power spectrum and net power of the second power spectrum satisfy relativity criteria; and

    suppressing the at least one identified frequency range of the captured audio signal by an amount linearly proportional to a ratio of the first power spectrum to the second power spectrum.

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