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

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A microphone is inserted into the ear canal to capture the frequencies emitted by the prosthesis.
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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.

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