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Detection of a microphone

  • US 9,699,581 B2
  • Filed: 09/10/2012
  • Issued: 07/04/2017
  • Est. Priority Date: 09/10/2012
  • Status: Active Grant
First Claim
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1. A method comprising:

  • determining at least one microphone is impaired by analysing at least one audio signal from the at least one microphone, wherein analysing the at least one audio signal from the at least one microphone comprises;

    generating a histogram comparing a power level for the at least one audio signal from the at least one microphone over time;

    determining whether the generated histogram has collected valid data to reflect the power level for the at least one audio signal;

    detecting at least one histogram peak and a value greater than a defined threshold based on the collected valid data; and

    determining a position of the detected at least one histogram peak occurs outside a defined normal operational range for the microphone, the defined normal operational range indicating when the at least one microphone is operating correctly or as expected;

    determining an indicator based on the determination of the impairment of the at least one microphone; and

    applying the indicator based on the determination of the impairment of the at least one microphone, such that the at least one audio signal is processed based on the indicator.

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