Method and system for comfort noise generation in speech...

Details Method and system for comfort noise generation in speech... Method and system for comfort noise generation in speech...

G - Physics

10

L

G10L 19/00 (2006.01) H04M 1/253 (2006.01) G10L 11/02 (2006.01)

Patent

CA 2428888

A method and system for providing comfort noise (150) in the non-speech periods in speech communication. The comfort noise is generated based (28) on whether the background noise in the speech input is stationary or non- stationary. If the background noise is non-stationary, a random component is inserted (32) in the comfort noise using a dithering process. If the background noise is stationary, the dithering process is not used.

L'invention porte sur un procédé (200) et sur un système (1) visant à générer un bruit de confort (150) dans les périodes silencieuses de communications téléphoniques. Le bruit de confort est généré (206) en fonction de l'état stationnaire ou non du bruit de fond de l'entrée vocale. Si le bruit de fond n'est pas stationnaire, un composant aléatoire est inséré (32, 38, 232) dans le bruit de confort par un processus de vibration. Si le bruit de fond est stationnaire, on n'utilise pas le processus de vibration.

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