Speech recognition using bio-signals

G - Physics – 10 – L

Patent

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Details

G10L 15/24 (2006.01) G10L 9/00 (1995.01)

Patent

CA 2137840

The recognition rate of a speech recognition system is improved by compensating for changes in the user's speech that result from factors such as emotion, anxiety or fatigue. A speech signal derived from a user's utterance, and a bio-signal, which is indicative of the user's emotional state, are provided to a speech recognition system. The bio-signal is used to provide a reference frequency that changes when the user'semotional state changes. An utterance is identified by examining the relative magnitudes of its frequency components and the position of the frequency components relative to the reference frequency.

Le taux de reconnaissance d'un système de reconnaissance de la parole est amélioré par compensation pour les changements affectant la parole d'un utilisateur en raison de certains facteurs comme l'émotion, l'anxiété ou la fatigue. Un signal vocal dérivé de la prononciation de l'utilisateur du système et un bio-signal donnant des indications sur l'état émotif de l'utilisateur sont fournis au système de reconnaissance de la parole. Le bio-signal sert à fournir une fréquence de référence qui change lorsque l'état émotif de l'utilisateur change. La prononciation est identifiée par un examen des amplitudes relatives des éléments du faisceau de fréquence et de la position de ces éléments en regard à la fréquence de référence.

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