Channel specific gain control including lateral suppression
AssigneeMED-EL Elektromedizinische Geraete GmbH
InventorPeter Schleich
Life of this patent
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Abstract
A method is described for generating electrode stimulation signals for a plurality of stimulation electrodes in an implanted electrode array. An acoustic audio signal is processed with a bank of filters to generate a set of band pass signals where each band pass signal corresponds to a band of audio frequencies associated with one of the filters. A lateral suppression network is used to perform channel specific dynamic amplitude mapping of the band pass signals to generate a set of compressed band pass signals. Stimulation information is extracted from the compressed band pass signals to generate a set of stimulation timing signals, and the stimulation timing signals are developed into a set of electrode stimulation signals to the stimulation electrodes.
Claims17
A method of generating electrode stimulation signals for a plurality of stimulation electrodes in an implanted electrode array, the method comprising:
- processing an acoustic audio signal with a bank of filters to generate a set of band pass signals, each band pass signal corresponding to a band of audio frequencies associated with one of the filters;
- using a lateral suppression network based on automatic gain control circuitry using a multiplication matrix to perform channel specific dynamic amplitude mapping of the band pass signals to generate a set of compressed band pass signals;
- extracting stimulation information from the compressed band pass signals to generate a set of stimulation timing signals;
- and
- developing the stimulation timing signals into a set of electrode stimulation signals to the stimulation electrodes.
A non-transitory computer readable storage medium generating electrode stimulation signals for a plurality of stimulation electrodes in an implanted electrode array, the product comprising:
- program code for processing an acoustic audio signal with a bank of filters to generate a set of band pass signals, each band pass signal corresponding to a band of audio frequencies associated with one of the filters;
- program code for using a lateral suppression network based on automatic gain control circuitry using a multiplication matrix to perform channel specific dynamic amplitude mapping of the band pass signals to generate a set of compressed band pass signals;
- program code for extracting stimulation information from the compressed band pass signals to generate a set of stimulation timing signals;
- and
- program code for developing the stimulation timing signals into a set of electrode stimulation signals to the stimulation electrodes.
Dependencies are inferred from the claim text.