US 11,931,575 B2
Cochlear implant system with optimized frame coding
Marianna Vatti, Smørum (DK); Kai Dang, Xiangyang (CN); Pierre Stahl, Vallauris (FR); Manuel Segovia Martinez, Vallauris (FR); Dan Gnansia, Vallauris (FR); and Bradford Backus, Vallauris (FR)
Assigned to Oticon Medical A/S, Smørum (DK)
Filed by Oticon Medical A/S, Smørum (DK)
Filed on Aug. 20, 2021, as Appl. No. 17/407,940.
Claims priority of application No. 20192175 (EP), filed on Aug. 21, 2020.
Prior Publication US 2022/0054836 A1, Feb. 24, 2022
Int. Cl. A61N 1/36 (2006.01); A61N 1/02 (2006.01); A61N 1/05 (2006.01); A61N 1/08 (2006.01); G16H 20/40 (2018.01)
CPC A61N 1/36038 (2017.08) [A61N 1/025 (2013.01); A61N 1/0541 (2013.01); A61N 1/08 (2013.01); G16H 20/40 (2018.01)] 17 Claims
OG exemplary drawing
 
1. A cochlear implant system comprising:
a receiver configured to receive an acoustical signal and transmit an audio signal based on the acoustical signal,
a processor configured to receive and divide the audio signal into a plurality of band limited audio signals and to generate a plurality of stimulation pulses based on sampling of the plurality of band limited audio signals, and wherein each of the plurality of band limited audio signals is sampled with a temporal onset, and one or more audio components are determined for each of the sampled plurality of stimulation pulses, and
an electrode array including a plurality of electrodes,
wherein the processor is configured to switch between using a fixed stimulation frame onset or a variable stimulation frame onset for frame coding the plurality of stimulation pulses into one or more stimulation frames, wherein the processor is configured to switch between the fixed stimulation frame onset and the variable stimulation frame onset based on the one or more audio components, and wherein the electrode array is configured to stimulate auditory nerves of a user of the cochlear implant system based on the frame coded plurality of stimulation pulses, and
wherein the processor is configured to generate a sequence of events for each of the plurality of band limited audio signals, and where each event of the sequence of events is determined when a phase of the band limited audio signal exceeds a phase threshold, and wherein the phase threshold is any value between 0 and 2π, and the temporal onset is equal to an event rate of the sequence of event.