Method and apparatus for transmitting speech activity in distributed voice recognition systems
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United States of America Patent
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Apr 10, 2007
Grant Date -
Mar 27, 2003
app pub date -
May 28, 2002
filing date -
Jun 14, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A system and method for transmitting speech activity in a distributed voice recognition system. The distributed voice recognition system includes a local VR engine in a subscriber unit and a server VR engine on a server. The local VR engine comprises an advanced feature extraction (AFE) module that extracts features from a speech signal, and a voice activity detection (VAD) module that detects voice activity within a speech signal. The combined results from the VAD module and feature extraction module are provided in an efficient manner to a remote device, such as a server, in the form of advanced front end features, thereby enabling the server to process speech segments free of silence regions. Various aspects of efficient speech segment transmission are disclosed.
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