Multiple pass speech recognition method and system
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United States of America Patent
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Feb 27, 2007
Grant Date -
Mar 25, 2004
app pub date -
Oct 10, 2002
filing date -
Sep 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiple pass speech recognition method includes a first pass and a second pass. The first pass recognizes an input speech signal to generate a first pass result. The second pass generates a first grammar having a portion set to match a first part of the input speech signal, based upon the context of the first pass result, and generate a second pass result. The method may further include a third pass grammar limiting the second part of the input speech signal to the second pass result. The third pass grammar includes a model corresponding to the first part of the input speech signal and varying within the second pass result. The third pass compares the first part of the input speech signal to the model while limiting the second part of the input speech signal to the second pass result.
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