Speech recognition pattern adaptation system using tree scheme
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United States of America Patent
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Jan 9, 2001
Grant Date -
N/A
app pub date -
Feb 2, 1996
filing date -
Feb 3, 1995
priority date (Note) -
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Abstract
Pattern matching means 3 matches categories of a reference pattern stored in reference pattern memory means 2 and input samples of an input pattern produced by input pattern generating means 1. Data statistics estimating means 6 calculates the numbers of input samples in individual nodes of a tree scheme reference pattern stored in the tree scheme reference pattern memory means 4. Node selecting means 6 selects nodes used for adaptation according to the input sample numbers calculated by the data statistics estimating means 5. Adaptation parameter generating means 7 calculates an adaptation parameter in the Nodes selected by the node selecting means 6. Reference pattern generating means 8 produces an adapted reference pattern using the calculated adaptation parameter.
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