A communication system and method using a speaker dependent...

Details A communication system and method using a speaker dependent... A communication system and method using a speaker dependent...

G - Physics

10

L

G10L 21/04 (2006.01) G10L 11/04 (2006.01)

Patent

CA 2213699

A method for time-scale modification of speech using a modified version of the Waveform Similarity based Overlap-Add technique (WSOLA) comprises the steps of storing a portion of an input speech signal in a memory, analyzing the portion of the input speech signal providing an estimated pitch value (12), determining a segment size (14) in response to the estimated pitch value and time-scaling (18) the input speech signal for a given time-scaling factor and in response to the determined segment size.

Procédé de modification de l'échelle de temps de la voix au moyen d'une version modifiée de la technique WSOLA (Waweform Similarity based Overlap-Add ou technique d'addition à recouvrement basée sur la similitude des formes d'onde), qui consiste à enregistrer dans une mémoire une partie d'un signal vocal entrant fournissant une estimation de la valeur du ton (12), à déterminer la taille d'un segment (14) en réponse à une valeur estimée du ton, et à ajuster l'échelle de temps (18) du signal entrant en fonction d'un facteur donné de modification de l'échelle de temps et en fonction de la taille déterminée du segment.

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