Computer system and computer-implemented process for...

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G - Physics

10

L

G10L 15/18 (2006.01) G10L 11/06 (2006.01) G10L 15/04 (2006.01) G10L 15/02 (2006.01)

Patent

CA 2187639

The present invention is based on the use of linguistic, especially phonological, knowledge to guide the speech recognition process. A speech signal containing an utterance is received and linguistic cues in the speech signal are detected. From these detected linguistic cues, a symbolic representation of the contents of the speech signal is generated. This symbolic representation comprises at least one word division, wherein each word division consists of an onset-rhyme pair and associated phonological elements. These phonological elements are univalent, may appear in all languages and are distinguishable from each other and directly interpretable in the speech signal. A lexicon of predetermined symbolic representations is provided for words in a particular language. A best match to the generated symbolic representation is found in the lexicon, thereby recognizing the spoken word.

L'invention concerne l'utilisation de connaissances linguistiques et notamment phonologiques, pour orienter le processus de reconnaissance vocale. Un signal vocal contenant des sons est reçu et des indices linguistiques y sont détectés. A partir de ces indices, une représentation symbolique de la teneur du signal vocal est alors produite. Cette représentation comprend au moins une division par mots comprenant une paire son d'attaque-rime et des éléments phonologiques associés. Ces derniers, univalents, peuvent apparaître dans toutes les langues, se distinguer les uns des autres et s'interpréter directement dans le signal vocal. Un lexique de représentations symboliques prédéterminées est fourni pour les mots d'une langue donnée. Une correspondance optimale avec la représentation symbolique produite se trouve dans le lexique, ce qui permet de reconnaître le mot prononcé.

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