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Audiolocation system combining use of audio fingerprinting and audio watermarking

  • US 9,332,522 B2
  • Filed: 05/20/2014
  • Issued: 05/03/2016
  • Est. Priority Date: 05/20/2014
  • Status: Active Grant
First Claim
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1. A system for audio-based navigation or localization, comprising:

  • a sound system with a first speaker playing first audio content and a second speaker playing second audio content, wherein the first speaker is positioned in a first space in a venue and the second speaker is positioned in a second space of the venue; and

    a mobile device with memory storing a database of fingerprints of a plurality of differing audio content, with a microphone for receiving an audio signal associated with the first audio content or the second audio content, and with a processor running at least one of a fingerprinting module and a watermarking module to determine a location of the mobile device by processing the received audio signal,wherein the processor runs the fingerprinting module and the watermarking module in parallel to process the audio signal, andwherein the location is provided by the watermarking module when a watermark is decoded from the audio signal by the watermarking module and provided by the fingerprinting module when decoding by the watermarking module fails.

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