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US Patent 9319816 Characterizing environment using ultrasound pilot tones

Patent 9319816 was granted and assigned to Amazon on April, 2016 by the United States Patent and Trademark Office.

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Is a
Patent
Patent

Patent attributes

Current Assignee
Amazon
Amazon
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
9319816
Date of Patent
April 19, 2016
Patent Application Number
13627862
Date Filed
September 26, 2012
Patent Citations Received
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US Patent 12132459 Audio calibration of a portable playback device
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US Patent 12062383 Linear filtering for noise-suppressed speech detection via multiple network microphone devices
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US Patent 12069444 Calibration state variable
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US Patent 12126970 Calibration of playback device(s)
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US Patent 11664023 Voice detection by multiple devices
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US Patent 11676590 Home graph
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US Patent 11689858 Device designation of playback and network microphone device arrangements
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US Patent 11694689 Input detection windowing
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Patent Primary Examiner
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Davetta W. Goins
Patent abstract

A voice-activated computing device configured to transmit a pilot tone and then capture or receive a signal, which corresponds to the pilot tone, reflected from within the environment containing the voice-activated computing device. The voice-activated computing device, or some other computing system or device, analyzes the received signal in order to determine analyze one or more characteristics present within the signal, i.e. noise, echo, etc. Based upon the analysis, models for signal processing can be determined, selected and/or altered. Future signals received by the voice-activated computing device can be processed with such models. The analysis can also allow for the models to be dynamically updated and for models to be dynamically created.

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