One Source wants to know your ability of hearing sounds. Audiometric testing tests the sounds based on their loudness and speed of the sound wave vibrations. The way sound waves travel through the inner ear are through the ear canal, eardrum and air conduction. The testing involves checking your ability to hear whispers, spoken words and the sound of a soft ticking noise. Other instruments are used to test the ability to hear different volumes. Audiometric testing is performed to detect hearing loss at different stages. Common causes of hearing loss include chronic ear infections, occupational hearing loss, ruptured eardrum, disease, acoustic trauma and head injury.