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Defect detection via audio playback

  • US 9,930,463 B2
  • Filed: 03/31/2016
  • Issued: 03/27/2018
  • Est. Priority Date: 03/31/2016
  • Status: Active Grant
First Claim
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1. A playback device, comprising:

  • one or more processors;

    one or more transducers configured to output sound;

    one or more microphones;

    memory comprising instructions that, when executed by the one or more processors, cause the playback device to perform functions comprising;

    performing a first test, wherein performing the first test comprises;

    playing back, via the one or more transducers, a first test sound;

    recording, via the one or more microphones, the first test sound, wherein the recorded first test sound comprises audio data in a range of frequencies; and

    detecting, based on the recorded first test sound, data indicating a defect of the playback device based on the recorded first test sound, wherein the data indicating the defect comprises data in a subrange of frequencies of the range of frequencies having at least one of (i) missing spectral characteristics and (ii) deteriorated spectral playback characteristics with respect to an expected test sound;

    based on the data indicating the defect of the playback device, performing a second test that is different than the first test, wherein performing the second test comprises;

    playing back, via the one or more transducers, a second test sound comprising only audio within the subrange of frequencies;

    recording, via the one or more microphones, the second test sound; and

    determining details on the defect of the playback device based on the recorded second test sound.

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