Automatic sensitivity control

Details Automatic sensitivity control Automatic sensitivity control

H - Electricity

03

G

H03G 3/20 (2006.01) A61N 1/36 (2006.01) H03G 3/32 (2006.01) H03G 3/34 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2203395

A gain control arrangement for an auditory prosthesis, such as a hearing aid or cochlear prosthesis, is disclosed. The output of a controlled amplifier 11 is processed so as to derive an average noise floor level. This is compared to a predetermined level, and the gain adjusted slowly up or down in response to the comparison. Hardware and software implementations are disclosed.

L'invention concerne un système de commande de gain destiné à une prothèse auditive, par ex. à une prothèse cochléaire. Ce système consiste à traiter le signal de sortie d'un amplificateur commandé (11) de façon à dériver un niveau de bruit de fond moyen (15) qui est comparé à un niveau prédéterminé (14). Le gain est alors ajusté lentement vers le haut ou vers le bas en fonction de la comparaison.

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