Investigating Electrical Categorical Loudness Scaling Using a Mobile Research App in Experienced Adult Cochlear Implant Participants

Inclusion Criteria: * At least three months of experience with the cochlear implant. * Implanted with the CI600 series (CI612, CI622, CI632) or CI500 series (CI512, CI522, CI532) cochlear implant. * Able to be programmed with ACE (Advanced Combination Encoder), a fixed pulse width (PW) MAP with a maximum PW of 50 us per channel and with ≥ 18 enabled channels on the sound processor MAP. * Fluent speaker in the language used to conduct the study procedures, as determined by the investigator. * Willing and able to provide written informed consent and to comply with all requirements of the protocol. Exclusion Criteria: * Participants programmed with an acoustic component in the tested ear. * Additional health factors, known to the investigator, that would prevent or restrict participation in the evaluations, including significant visual impairment and/or dexterity issues. * Unable or unwilling to comply with the requirements of the clinical investigation as determined by the investigator. * Investigator site personnel directly affiliated with this study and/or their immediate families; immediate family is defined as a spouse, parent, child, or sibling. * Cochlear employees or employees of Contract Research Organizations or contractors engaged by Cochlear for the purposes of this investigation. * Current participation, or participation in another interventional clinical study/trial in the past 30 days, involving an investigational drug or device (unless Cochlear sponsored and d…