Fitting method for a binaural hearing system

A method for fitting of a binaural hearing system comprising a first hearing device and a second hearing device to a patient suffering from an asymmetric hearing loss for first time use, wherein the difference in hearing loss between the two ears is at least 5 dB on average in a main frequency range between 500 Hz and 4 kHz, the method comprising:

• providing audiogram data representative of the hearing loss of each of the ears of the patient,
• determining, from the audiogram data, for each of the hearing devices an initial gain setting and a final gain setting,
• applying, for an initial time period, the respective initial gain setting to each of the hearing devices,
• applying, for an acclimatization time period, gain settings to each of the hearing device which are gradually changed, as a function of time, from the respective initial gain setting to the respective final gain setting,
• applying, after lapse of the acclimatization time period, the respective final gain setting in each of the hearing devices,
• wherein the initial gain setting of the hearing device used at the ear having the stronger hearing loss is, on average in the main frequency range, lower than the respective final gain setting by an amount depending on the hearing loss of the ear having the weaker hearing loss, wherein the initial gain setting of the hearing device used at the ear having the weaker hearing loss deviates, on average in the main frequency range, from the respective final gain setting by an amount depending on the hearing loss of the ear having the stronger hearing loss, and wherein, on average in the main frequency range, the binaural difference between the initial gain settings is lower than that of the final gain settings.