 However, there are benefits to using pure-tone audiometry over other forms of hearing test, such as click auditory brainstem response (ABR).Pure-tone audiometry provides ear specific thresholds, and uses frequency specific pure tones to give place specific responses, so that the configuration of a hearing loss can be identified.As pure-tone audiometry uses both air and bone conduction audiometry, the type of loss can also be identified via the air-bone gap.