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, - a memory unit including a masking model scheme including masking contributions of the plurality of electrode pulses provided to the plurality of electrodes, and wherein the processor unit is configured to determine and assign an importance value to one or more electrodes of the plurality of electrodes, wherein the processor unit is configured to determine each of the importance values based on a status of an electrode pulse of the plurality of electrode pulses assigned to the respective electrode, and wherein the status includes an amount of across-electrode interference induced to the electrode pulse from one or more electrode pulses, and wherein the processor unit is configured to determine the status based on the masking model scheme, wherein the processor unit is configured to determine temporal masking contributions of each of the one or more electrode pulses of the other electrodes induced on the electrode pulse of the electrode based on a pulse time difference between a first time of the electrode pulse of the electrode and a second time of each of the one or more electrode pulses of the other electrodes, wherein the second time is preceding to the first time. - 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, - a memory unit including a masking model scheme including masking contributions of the plurality of electrode pulses provided to the plurality of electrodes, and wherein the processor unit is configured to determine and assign an importance value to one or more electrodes of the plurality of electrodes, wherein the processor unit is configured to determine each of the importance values based on a status of an electrode pulse of the plurality of electrode pulses assigned to the respective electrode, and wherein the status includes an amount of across-electrode interference induced to the electrode pulse from one or more electrode pulses, and wherein the processor unit is configured to determine the status based on the masking model scheme, wherein the processor unit is configured to determine temporal masking contributions of each of the one or more electrode pulses of the other electrodes induced on the electrode pulse of the electrode based on a pulse time difference between a first time of the electrode pulse of the electrode and a second time of each of the one or more electrode pulses of the other electrodes, wherein the second time is preceding to the first time.