Automatically determining the accuracy of a pronunciation...

G - Physics – 10 – L

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G10L 15/06 (2006.01)

Patent

CA 2375402

An approach for automatically determining the accuracy of a pronunciation dictionary in a speech recognition system involves comparing an expected pronunciation representation for a particular word from a pronunciation dictionary to one or more actual pronunciations of the particular word. An accuracy score for each of the phonemes that constitute the pronunciation of the particular word is determined from the comparison of the expected and actual pronunciations for the particular word. The accuracy score is evaluated against specified accuracy criteria to determine whether the expected pronunciation for the particular word satisfies the specified accuracy criteria. If the expected pronunciation does not satisfy the specified accuracy criteria for the particular word, then the expected pronunciation for the particular word in the pronunciation dictionary is identified as requiring updating. Manual or automated update mechanisms may then be employed to update the identified expected pronunciation representations to reflect the actual pronunciations.

Cette invention concerne une méthode de détermination automatique de l'exactitude d'un dictionnaire de prononciation dans un système de reconnaissance vocale, qui consiste à comparer une représentation de prononciation prévue pour un mot donné à une ou plusieurs prononciations effectives dudit mot. On attribue une note d'exactitude pour chacun des phonèmes qui régissent la prononciation du mot en question en comparant les prononciations prévue et réelle de ce mot. Appréciée en regard de critères d'exactitude spécifiés, cette note permet de déterminer si le prononciation prévue pour le mot en question satisfait auxdits critères. Si tel n'est pas le cas, on repère la prononciation prévue comme nécessitant une mise à jour. On peut faire intervenir des mécanismes de mise à jour pour actualiser les représentations de prononciations prévues conformément aux prononciations effectives.

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