Ablb - Fowler Test; Tone In Noise Test (Langenbeck Test) - Interacoustics AD629 Gebrauchsanweisung

AD629 Instructions for Use - US Page 16

3.5.3 ABLB - Fowler test

ABLB (Alternate Binaural Loudness Balancing) is a test to detect perceived loudness differences between
the ears. The test is designed for people with unilateral hearing loss. It serves as a possible test for
recruitment.
The test is performed at frequencies where recruitment is presumed. The same tone is presented
alternatively to both ears. The intensity is fixed in the impaired ear (20 dB above pure tone threshold).
The task of the patient is to adjust the level of the better ear until the signal in the two ears is of equal
intensity. Note however that the test may also be performed by fixing the intensity in the normal hearing
ear and having the patient set the tone for the impaired ear.
Please refer to the Tone Test section above for key function descriptions for Function Keys (10), (13),
(14), (15), (16), (17).

3.5.4 Tone in noise test (Langenbeck Test)

Please refer to the Tone Test section above for key function descriptions for Function Keys (10), (13),
(14), (15), (16), (17).