Geotagged and weighted environmental audio for enhanced speech recognition accuracy
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United States of America Patent
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May 8, 2012
Grant Date -
Jan 26, 2012
app pub date -
Sep 30, 2011
filing date -
Apr 14, 2010
priority date (Note) -
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Abstract
Enhancing noisy speech recognition accuracy by receiving geotagged audio signals that correspond to environmental audio recorded by multiple mobile devices in multiple geographic locations, receiving an audio signal that corresponds to an utterance recorded by a particular mobile device, determining a particular geographic location associated with the particular mobile device, selecting a subset of geotagged audio signals and weighting each geotagged audio signal of the subset based on whether the respective audio signal was manually uploaded or automatically updated, generating a noise model for the particular geographic location using the subset of weighted geotagged audio signals, where noise compensation is performed on the audio signal that corresponds to the utterance using the noise model that has been generated for the particular geographic location.
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