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Determining distances and angles between speakers and other home theater components

  • US 10,299,060 B2
  • Filed: 12/28/2017
  • Issued: 05/21/2019
  • Est. Priority Date: 12/30/2016
  • Status: Active Grant
First Claim
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1. A method for determining a distance between two or more speakers and a reference speaker co-located with an audio source device, and calibration thereof, the method comprising:

  • playing back a sweep signal from the reference speaker at a first time;

    receiving the played back sweep signal by a first microphone of a first speaker of the two or more speakers at a second time;

    receiving the played back sweep signal by a second microphone of a second speaker of the two or more speakers at a third time;

    determining a first distance between the first speaker and the audio source device based on the first time and the second time;

    determining a second distance between the second speaker and the audio source device based on the first time and the third time;

    capturing the played back sweep signal by a capture device located at a listening position at a fourth time, and in response, playing back the sweep signal from the capture device, wherein a third distance is between the first speaker and the listening position, and a fourth distance is between the second speaker and the listening position,receiving the sweep signal from the capture device by the first speaker at a fifth time, anddetermining the third distance based on one or more of the fourth time, the fifth time, and a duration of the sweep signal;

    capturing the played back sweep signal by the capture device located at the listening position at a sixth time, and in response, playing back the sweep signal from the capture device,receiving the sweep signal played back from the capture device by the second speaker at a seventh time, anddetermining the fourth distance based on at least one of the sixth time, the seventh time, and the duration of the sweep signal; and

    calibrating at least one of the first speaker or the second speaker based on the first distance, the second distance, the third distance, and the fourth distance.

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