Unsupervised hmm adaptation based on speech-silence...

Details Unsupervised hmm adaptation based on speech-silence... Unsupervised hmm adaptation based on speech-silence...

G - Physics

10

L

G10L 11/02 (2006.01) G10L 15/06 (2006.01) G10L 15/14 (2006.01)

Patent

CA 2233179

An unsupervised, discriminative, sentence level, HMM adaptation based on speech-silence classification is presented. Silence and speech regions are determined either using a speech end-pointer or the segmentation obtained from the recognizer in a first pass. The discriminative training procedure using a GPD or any other discriminative training algorithm, employed in conjunction with the HMM-based recognizer, is then used to increase the discrimination between silence and speech.

Adaptation HMM de niveau phrase, non supervisée, discriminative, basée sur la classification parole-silence. Les zones de silence et de parole sont déterminées soit au moyen d'un pointeur de fin de parole, soit en fonction de la segmentation obtenue du reconnaisseur à un premier passage. La procédure d'entraînement discriminatif utilisant un algorithme GPD ou tout autre algorithme d'entraînement discriminatif, employé conjointement avec le reconnaisseur de type HMM, est ensuite utilisée pour accroître la discrimination entre silence et parole.

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