Oticon Medical A/s

Cochlear Limited

Aswin Adris Wijetillake

Manuel Segovia Martinez

Pierre Stahl

Dan Gnansia

Julian Skovgaard

Simon Krogholt Christiansen

Kai Dang

A cochlear stimulation system for determining a Temporal Fine Structure (TFS) parameter of a spectral component of an incoming acoustic signal is provided. The system comprises a transducer receiving an incoming acoustic signal, and wherein a sampled audio signal of length N samples is provided based on the incoming acoustic signal, a storing unit including a plurality of window frequency differences and/or a plurality of window energy level differences. The system further comprises a signal processor for estimating the TFS parameter of the full frequency range of the sampled audio signal by locating a main spectrum sample of the plurality of spectrum samples having a maximum energy level within a range of frequencies centered around the main spectrum sample, and determining the TFS parameter based on the energy level difference for one or more of the spectrum samples of the group of spectrum samples and the window function.

Cochlear stimulation system with an improved method for determining a temporal fine structure parameter

The invention relates to a cochlear implant system comprising a microphone unit configured to receive an acoustical signal and transmit an audio signal based on the acoustical signal, a processor unit configured to receive the audio signal and process the audio signal into a plurality of electrode pulses, an electrode array including a plurality of electrodes configured to stimulate auditory nerves of a user of the cochlear implant system based on the plurality of electrode pulses, and wherein the processor unit is configured to assign an importance value to one or more electrodes of the plurality of electrodes, wherein each of the importance values is determined based on a status of an electrode pulse assigned to the respective electrode, select a main set of electrodes of the plurality of electrodes during a time window, where the importance value of each of the selected electrodes of the main set of electrodes is larger or equal to an importance threshold value, activate the electrodes of the main set of electrodes to stimulate auditory nerves based on the electrode pulses of the plurality of electrode pulses, and reserve the electrodes of the main set of electrodes into a reserved mode during a reservation period.

Cochlear implant system with improved electrode selection scheme

The invention relates to a method and a cochlear implant system comprising; a microphone unit configured to receive an acoustical signal and transmit an audio signal based on the acoustical signal, a processor unit configured to receive the audio signal and process the audio signal into a plurality channels that are then used to generate a plurality of electrode pulses, an electrode array including a plurality of electrodes (M) configured to stimulate auditory nerves of a user of the cochlear implant system based on the plurality of electrode pulses, and wherein the processor unit is configured to assign an importance value to one or more electrodes of the plurality of electrodes, wherein each of the importance values is determined based on a status of an electrode pulse assigned to the respective electrode, and wherein the status of the electrode pulse of the plurality of electrode pulses is determined based on a masking model of across-electrode interferences imposed on that electrode pulse by other electrode pulses of the plurality of electrode pulses.

Cochlear implant system with improved across-electrode interference model

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Smørum, Denmark

Aswin Adris Wijetillake