The sound tests help ensure that their frequencies are amplified by the specific needs of the user.

A microphone is inserted into the ear canal to capture the frequencies emitted by the prosthesis.
The hearing aid is then attached to the microphone in order to measure the noise level specified. The microphone (clear tube) picks up sound and transmits the results to a specialized software that translates the sound into a graph.

The audiologist then explains the test results to the patient and if needed, the necessary adjustments to ensure optimal performance of the prosthesis.