Stenger Test; Ablb - Fowler Test; Tone In Noise Test (Langenbeck Test) - Interacoustics AC40 Gebrauchsanweisung

AC40 Instructions for Use - US Page 21

3.5.2 Stenger Test

The Stenger test is a test when a patient is suspected of feigning/faking a hearing loss and is based on
the auditory phenomenon, "The Stenger Principle", that states that only the louder of two similar tones
presented to both ears at the same time will be perceived. As a general rule it has been recommended to
perform the Stenger test in case of unilateral hearing losses or significant asymmetries.
Please refer to the Tone Test section above for key function descriptions for Function Keys (10), (13),
(14), (15), (16), (17).

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).