US Patent 7372770 Ultrasonic Doppler sensor for speech-based user interface
Patent 7372770 was granted and assigned to Mitsubishi Electric Research Laboratories on May, 2008 by the United States Patent and Trademark Office.
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Patent Inventor Names
Bhiksha Ramakrishnan0
Kaustubh Kalgaonkar0
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Article (+405 characters)
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Patent abstract
A method and system detect speech activity. An ultrasonic signal is directed at a face of a speaker over time. A Doppler signal of the ultrasonic signal is acquired after reflection by the face. Energy in the Doppler signal is measured over time. The energy over time is compared to a predetermined threshold to detect speech activity of the speaker in a concurrently acquired audio signal.
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US Patent 07372770 Ultrasonic Doppler sensor for speech-based user interface US Patent 7372770 Ultrasonic Doppler sensor for speech-based user interface
Infobox
Patent Number
073727700
Patent Number
73727700
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
073727700
Date of Patent
May 13, 2008
0Patent Application Number
115193720
Date Filed
September 12, 2006
0Official Website
Patent Primary Examiner
Edits on 17 Jun, 2022
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US Patent 07372770 Ultrasonic Doppler sensor for speech-based user interface
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07372770
Date of patent
May 13, 2008
Patent application number
11519372
Date Filed
September 12, 2006
Patent primary examiner
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