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Method and system for enhancing sound

  • US 8,938,078 B2
  • Filed: 10/07/2011
  • Issued: 01/20/2015
  • Est. Priority Date: 10/07/2010
  • Status: Active Grant
First Claim
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1. A method of enhancing an acoustic signal, comprising steps of:

  • sensing an acoustic signal using a microphone in an electronic device, the acoustic signal emitted in response to a primary sound signal and transmitted through a space;

    converting the sensed acoustic signal to a digitized acoustic signal;

    receiving, using an antenna in the electronic device, a wireless signal encoded with the primary sound signals;

    decoding the primary sound signal encoded in the wireless signal as a digital primary sound signal;

    estimating an impulse response for the space based on the digitized acoustic signal and the digital primary sound signal;

    calculating a delay between the digitized acoustic signal and the digital primary sound signal by scanning the estimated impulse response to identify a peak magnitude of the estimated impulse response;

    calculating an average magnitude of the estimated impulse response;

    comparing the average magnitude of the estimated impulse response to the peak magnitude of the estimated impulse response to determine a peak-to-average ratio;

    delaying the digital primary sound signal using the calculated delay if the peak-to-average ratio exceeds a predetermined value; and

    reproducing the delayed digital primary sound signal to enhance the acoustic signal heard by a user of the electronic device.

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