Apparatus and method for performing acoustic matching

Details Apparatus and method for performing acoustic matching Apparatus and method for performing acoustic matching

G - Physics

10

L

354/54

G10L 5/00 (1985.01)

Patent

CA 1236577

ABSTRACT The invention herein provides, in a speech recognition system which represents each vocabulary word or a portion thereof by at least one sequence of phones wherein each phone corresponds to a respective phone machine, each phone machine having associated therewith (a) at least one transition and (b) actual label output probabilities, each actual label probability representing the probability that a subject label is generated at a given transition in the phone machine, a method of performing an acoustic match between phones and a string of labels produced by an acoustic processor in response to a speech input, the method comprising the steps of: forming simplified phone machines which includes the step of replacing by a single specific value the actual label probabilities for a given label at all transitions at which the given label may be generated in a particular phone machine; and determining the probability of a phone generating the labels in the string based on the simplified phone machine corresponding thereto.

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