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Methods and system for cue detection from audio input, low-power data processing and related arrangements

  • US 10,459,685 B2
  • Filed: 02/09/2018
  • Issued: 10/29/2019
  • Est. Priority Date: 12/24/2013
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • in an electronic device comprising first and second processors, obtaining audio input corresponding to sound propagating within an aural environment surrounding the electronic device;

    at a first processor, processing the audio input to discern a characteristic of the audio input, the processing comprising processing audio input samples of the audio input to determine a relative-entropy of the audio input, and estimating the presence of audio activity based on the determined relative-entropy of the audio input;

    generating an output based upon the processing of the audio input to discern the characteristic; and

    causing the second processor to enter into a higher power state based on the generated output.

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