Subjective Evaluation of a Sound Processing Method for Hearing Aids on Auditory Distance Perception

Subjects fulfilling all of the following inclusion criteria are eligible for the study: * Willing and able to give written informed consent as documented by signature, * French-native adult speakers, * (Preferably) younger than 60 y.o. For all normal-hearing participants: \- Hearing thresholds lower or equal to 20 dB on both ears, as ensured by a pure-tone audiometry (125 Hz to 8 kHz) conducted at the beginning of the session. For all hearing-impaired patients: * Patients of Mr. Philippe Estoppey, private audiologist settled in Lausanne, * User of bilateral BTE Phonak hearing aids, commercialized after July 2012, with fittings that did not change over the last three months, * Presenting a severe-to-profound sensorineural hearing loss, * Presenting a symmetrical hearing loss (no bilateral hearing threshold that differ by more than 20 dB at any audiometric frequency (125 Hz - 4 kHz)). For HI patients experienced with remote microphone systems: \- Past or present users of FM and/or Roger devices for more than six months. For other HI patients: \- No past or present experience with FM and/or Roger devices for more than one month. The presence of any one of the following exclusion criteria will lead to exclusion of the participant: * Collaborator of the laboratory (LTS2) or student attending the courses of audio and acoustics given by the laboratory staff (EE-348 Electroacoustics, EE-548 Audio Engineering), * History of chronic or terminal illness, psychiatric disturbance, senile dementia, or cognitive impairment, * History of strong tinnitus and/or hyperacusis, * Strong visual impairment after correction with glasses or not, * History of epilepsy or other reactions associated with the proximity to a screen, * Motor disability that would disturb their presence at EPFL.