Keyword recognition system and method using template concantenat

Details Keyword recognition system and method using template concantenat Keyword recognition system and method using template concantenat

1992-10-14

1993-06-08

Knepper, David D.

G10L 500

Patent

active

052186687

ABSTRACT:
Similarity is measured between incoming speech and a plurality of candidate strings of filler and keyword templates to test the hypothesis of a keyword being present against the hypothesis of a keyword not being present in the input speech. As alternatives to a candidate string containing a keyword template, other candidate strings are assembled with filler templates of short speech sounds that may be similar to a keyword. A keyword is "recognized" only when an optimal candidate string containing the corresponding keyword template is determined to match the input speech more closely than all other candidate strings. A concatenation penalty is added to the partial string score each time a new template is added to a candidate string, in order to bias the score in favor of a candidate string containing a longer, keyword template.

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Levinson et al., "Interactive Clustering Techniques for Selecting Speaker-Independent Reference Templates for Isolated Word Recognition".

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