Key words

App – Short for application. A digital tool used on a smartphone or tablet to do a specific task.

Audiogram – A graph of a person’s hearing showing the quietest sound a person can hear (hearing threshold) at different frequencies of sound.

Audiometer – Hearing test device used to measure hearing.

Average hearing threshold – A calculation adding threshold values of 500 Hz, 1000 Hz, 2000 Hz, and 4000 Hz then dividing by four.

Ear and hearing professional – Professionals that test, manage, and treat ear and hearing problems.

Feedback (whistling) – The “whistle” sound produced by the hearing aid when sound escapes from the ear and is picked up by the microphone of the hearing aid.

Frequency – How many times a sound wave moves up and down in one second. There are different types of sound including deeper sounds (low frequency) such as a drum and sharper sounds (high frequency) such as a whistle. Frequency is measured in hertz (Hz).

Hearing threshold – Quietest sound that the person can hear at different frequencies of sound.

Hertz (Hz) – A way to measure how often something happens in one second. For example, if a sound wave vibrates 100 times in one second, it has a frequency of 100 Hz.

Ling sounds – A set of six sounds. These cover the full range of speech sounds across low to high frequencies.

Prescriptive formula – A calculation of the ideal amount of sound increase (amplification) applied at each frequency based on a person’s hearing test results.

Standard earmould –  A ready-made shaped earpiece produced in different sizes to fit inside a person’s ear. It connects to the hearing aid through a tube and delivers sound into a person’s ear.

Stetoclip (listening tube) – Also known as a listening tube, it allows a person with normal hearing to monitor if the hearing aid is working well.