A system includes a cochlear implant electrode arrangement comprising a plurality of stimulation channels； means for dividing an audio signal into a plurality of analysis channels means for establishing an electrode-nerve-interface model of hearing stimulation via the cochlear implant electrode arrangement means for determining a signal level value and a noise level value for each analysis channel by analyzing the respective frequency domain signal； means for determining a noise reduction gain parameter for at least some of the analysis channels as a function of the signal level value and the noise level value of the respective analysis channel means for applying noise reduction to the frequency domain signal according to the noise reduction gain parameters to generate a noise reduced frequency domain signal； and means for generating a stimulation signal for each of the stimulation channels according to the noise reduced frequency domain signal.
