Apparatus and method to classify sound to detect speech

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United States of America Patent

PATENT NO 9076459
APP PUB NO 20140278391A1
SERIAL NO

13797250

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Abstract

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Audio frames are classified as either speech, non-transient background noise, or transient noise events. Probabilities of speech or transient noise event, or other metrics may be calculated to indicate confidence in classification. Frames classified as speech or noise events are not used in updating models (e.g., spectral subtraction noise estimates, silence model, background energy estimates, signal-to-noise ratio) of non-transient background noise. Frame classification affects acceptance/rejection of recognition hypothesis. Classifications and other audio related information may be determined by circuitry in a headset, and sent (e.g., wirelessly) to a separate processor-based recognition device.

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Patent Owner(s)

  • INTERMEC IP CORP.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Braho, Keith P Murrysville, US 7 1916
Hardek, David D Allison Park, US 10 723

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