Since a hearing instrument cannot be prescribed like eye glasses, proper hearing instrument recommendation and fitting is highly dependent on the judgment and skill of the professional selecting the instrument. A hearing test generally takes place in a sound-proofed room, where a hearing care professional will start playing sounds that start at a bass tone and work up to treble tone. You will then be asked to push a button when you hear each sound. Each time you press the button, the hearing care professional will plot your results which will enable them ascertain your hearing range.
Once your type and degree of hearing loss has been determined, your hearing care professional will be able to decide how much amplification you will need; they may then show you a range of instruments appropriate for your individual hearing loss and together you can decide what is right for you.