Emphasis of short-duration transient speech features

Details Emphasis of short-duration transient speech features Emphasis of short-duration transient speech features

G - Physics

10

L

G10L 15/00 (2006.01) G10L 21/02 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2385233

A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity short-duration speech features in said signal.

La présente invention concerne un processeur sonore qui comprend un microphone (1), un préamplificateur (2), une banque de N filtres parallèles (3), un système de détection de transitions de courte durée dans le signal à enveloppe de chaque voie de filtre, ainsi qu'un système d'application de gain aux sorties de ces voies de filtre dans lesquelles le gain est lié à une fonction de la dérivée du second ordre du signal à enveloppe a variation lente dans chaque voie de filtre, afin d'assister la perception de caractéristiques vocales de courte durée et de faible intensité dans ledit signal.

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