Speech processing

G - Physics – 10 – L

Patent

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Details

G10L 15/20 (2006.01) G10L 21/02 (2006.01)

Patent

CA 2346967

A speech recognition apparatus for use in an environment containing ambient acoustic noise includes a speech recogniser (20) for receiving and processing data representative of a speech utterance to be recognised to output data representative of or dependent on the lexical content of said utterance. The apparatus includes level adjusting means (16) for adjusting the level of the speech utterance. The apparatus also includes means for measuring said ambient acoustic noise level before or during said utterance, processing means (22) for using said measured acoustic noise level to predict the likely level of the speech utterance, and for adjusting the gain of the signal in accordance with said prediction of the likely level of the speech utterance.

L'invention concerne un appareil de reconnaissance de la parole destiné à s'utiliser dans un environnement de bruit acoustique ambiant, l'appareil comprenant un dispositif de reconnaissance (20) de la parole permettant de recevoir et de traiter des données représentatives d'une émission de parole destinée à être reconnue, afin de produire des données représentatives ou dépendantes du contenu lexical de cette émission de parole. L'appareil comprend un dispositif de réglage de niveau (16) destiné à régler le niveau d'émission de parole. L'appareil comprend également un dispositif de mesure du niveau de bruit acoustique ambiant avant ou pendant l'émission de parole, un dispositif de traitement (22) utilisant ce niveau de bruit acoustique mesuré pour prédire le niveau vraisemblable de l'émission de parole et pour régler le gain du signal conformément à la prédiction du niveau vraisemblable de l'émission de parole.

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