Patent
1994-02-22
1998-05-12
Knepper, David D.
395 247, G10L 506
Patent
active
057518980
ABSTRACT:
Speech recognition is achieved using a normalized cumulative distance. A normalized Dynamic Programming (DP) value is calculated by dividing a cumulative path distance by an optimal integral path length. The path length is calculated iteratively by adding 2 if the warping path is diagonal or by adding 3 if the warping path is horizontal or vertical. Distance may be calculated by measuring a difference between input power and average power. The power difference is weighted by a coefficient (.lambda.) between 0 and 1. A Mahalanobis distance is then weighted by (1-.lambda.) and added to the weighted power difference.
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Kosaka Tetsuo
Sakurai Atsushi
Tamura Jun-ichi
Canon Kabushiki Kaisha
Knepper David D.
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