A system having a device for neural stimulation of a patient's cochlea, an in-situ device for measuring a patient's response to the neural stimulation of the cochlea, and a programming unit for adjusting the stimulation device； the stimulation device having a stimulation signal unit for generating a stimulation signal formed of pulses having a shape determined by a shape parameter set including at least one shape parameter； a cochlear implant stimulation arrangement with a plurality of stimulation channels for stimulating the cochlea based on the stimulation signal； the measuring device providing patient-specific response data concerning the stimulation response to a programming unit that controls the stimulation signal unit by subsequently supplying a plurality of different test shape parameter sets to the stimulation signal unit for causing the stimulation signal unit to generate corresponding test pulses, the programming unit evaluating each test shape parameter set based on stimulation response data.
