Hearing aid system and hearing aid for in-situ fitting

H - Electricity – 04 – R

Patent

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Details

H04R 25/00 (2006.01) H04R 29/00 (2006.01)

Patent

CA 2337250

Hearing aid system for the in-situ fitting of hearing aids, said system comprising a separate control device, and at least one hearing aid, adapted for communication with each other, said hearing aid comprising at least one microphone, a signal processor for generating an output signal to a receiver, and means for receiving control signals from the control device. During the in-situ fitting the control device is in communication with said hearing aid for the activation of genertion of test signals, which test signals are delivered to said receiver and emitted therefrom as acoustic test signals. Further, the hearing aid comprises a switch means which when said hearing aid is in communication with the control device may optionally be switched between at least a first and a second position, said switch attenuating in the first position the output signal to the receiver using a voltage dividing resistor network, and said switch bypassing in the second position said voltage dividing resistor network so as not to influence the output signal to the receiver.

L'invention concerne un système de correction auditive permettant d'assembler des appareils de correction auditive in situ. Ce système comprend un dispositif de commande séparé, et au moins un appareil de correction auditive, conçus pour communiquer entre eux. Cet appareil de correction auditive comprend au moins un microphone, un processeur de signaux servant à générer un signal de sortie destiné à un récepteur, et un dispositif servant à recevoir des signaux de commande du dispositif de commande. Lors de l'assemblage in situ, le dispositif de commande est en communication avec ledit appareil de correction auditive afin d'activer la génération de signaux d'essai, lesquels sont envoyés au récepteur puis émis par celui-ci en tant que signaux d'essai acoustiques. En outre, l'appareil de correction comprend une bascule qui, lorsque ledit appareil de correction est en communication avec le dispositif de commande, peut éventuellement basculer entre une au moins une première et une seconde positions. Ladite bascule permet, d'une part, d'atténuer, dans la première position, le signal de sortie destiné au récepteur, au moyen d'un réseau de résistances diviseur de tension, et, d'autre part, à dériver, dans la seconde position, ledit réseau de résistances diviseur de tension, de façon à ne pas influencer le signal de sortie destiné au récepteur.

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