Method and signal processor for intensification of speech...

Details Method and signal processor for intensification of speech... Method and signal processor for intensification of speech...

H - Electricity

04

R

H04R 25/00 (2006.01)

Patent

CA 2385390

In a hearing aid signal processor with AGC in at least three processing channels (a, B, C) for different frequency bands and with noise squelching capability to affect the gain control in at least a lowest frequency band (A) and one intermediate frequency band (B) speech signals components in the intermediate frequency band of an input signal including background noise are intensified by estimation of the content of speech signal components in at least the highest frequency band (C) and modification of the gain adjustment caused by noise squelching in the intermediate frequency band (B) to reduce the noise squelching.

L'invention concerne un processeur de signaux d'appareil auditif à commande automatique de gain (CAG) dans au moins trois canaux de traitement (a, B, C) pour différentes bandes de fréquence, et à capacité d'amortissement de bruit affectant la commande de gain dans au moins une bande de fréquence basse (A) et une bande de fréquence intermédiaire (B). Les composants des signaux vocaux dans la bande de fréquence intermédiaire d'un signal d'entrée comprenant un bruit de fond sont intensifiés par estimation du contenu des composants du signal vocal dans la plus haute bande de fréquence (C) au moins, et par modification du réglage de gain produit par l'amortissement du bruit dans la bande de fréquence intermédiaire (B) afin d'atténuer l'amortissement du bruit.

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