Generation of electrical stimuli for application to a cochlea

A - Human Necessities – 61 – F

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A61F 11/04 (2006.01) A61F 2/18 (2006.01) A61N 1/36 (2006.01) H04R 25/00 (2006.01)

Patent

CA 2487079

A method for processing sound signals to generate electrical stimuli for an auditory prosthesis electrode array including a plurality of electrodes, the method including: deriving (10) one or more filtered representations (Figure 3) of an incoming audio signal; and, generating (11) a series of spikes from each filtered signal representation to directly control electrode stimulation. Each spike has a temporal position based upon an instant at which the filtered signal representation crosses a predetermined threshold (.theta.;0) in a positive direction.

L'invention concerne un procédé de traitement de signaux sonores destiné à produire des stimuli électriques pour un réseau d'électrodes de prothèse auditive comprenant une pluralité d'électrodes. Ce procédé comprend les étapes consistant: à distribuer (10) une ou plusieurs représentations filtrées (voir figure) d'un signal audio entrant; et à produire (11) une série de variations à partir de chaque représentation filtrée de signal afin de commander directement la stimulation des électrodes. Chaque variation présente une position temporale fondée sur un instant auquel la représentation filtrée de signal dépasse un seuil prédéterminé (?;0) dans un sens positif.

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