Voice activity detection process and means for implementing said process

United States of America Patent

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Jun 9, 1987
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N/A
app pub date
May 31, 1984
filing date
Jun 7, 1983

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Expired

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Abstract

Speech signal presence is detected in a VAD (Voice Activity Detector) in two steps: (1) Signal energy above a threshold decides presence, below threshold decides ambiguity; (2) ambiguity is resolved by testing the rate of change of spectral parameters.

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Patent Owner(s)

Patent Owner	Address
INTERNATIONAL BUSINESS MACHINES CORPORATION	NEW ORCHARD ROAD ARMONK NY 10504

International Classification(s)

G10L:SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION

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[Patents Count]

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Inventor Name	Address	# of filed Patents	Total Citations
DesBlache, Andre	Nice, FR	2	96
Galand, Claude	Gagnes-sur-Mer, FR	99	6084
Vermot-Gauchy, Robert	Saint Paul, FR	4	219

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Voice activity detection process and means for implementing said process

Number of patents in Portfolio can not be more than 2000

United States of America Patent

06616021

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PATENT NO	4672669
SERIAL NO	06616021
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06616021

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