Ablb/Fowler - Interacoustics Affinity 2.0 Additional Information

Note: If you wish to switch between right and lef t during the Knaster training without the intensity
returning to the original start level, please be sure to enter the Common settings in the AC440 setup
(Menu/setup/AC440 setup, see section 1.7.2.1) and select "OFF" in the Default intensity when
changing output dropdown list like illustrated below:

1.7.12 ABLB/Fowler

ABLB (Alternate Binaural Loudness Balancing) is a test to detect perceived loudness dif ferences between
the ears designed f or people with unilateral hearing loss. It serves as a possible test f or recruitment.
The test is perf ormed at f requencies where recruitment is presumed. The same tone is presented
alternatively to both ears. The intensity is f ixed 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 perf ormed by f ixing the intensity in the normal hearing ear and
having the patient set the tone f or the impaired ear.
Required items:
The Af f inity 2.0 hardware
•
Licensed AC440 Audiometry module within your Af f inity
•
Calibrated Headphones or insert phones
•
A patient response button
•
Test procedure:
1) Open the AC440 module through your patient management system, Noah or OtoAccess®.
2) Choose settings f or ABLB/Fowler using the input and output f or channel 1 and channel 2 as
illustrated below:
Note: Man (Manual) and Multi Pulse should be selected f or channel 1 and Alt (Alternate) f or channel
2.
D-0004576-Q – 2022/05
Affinity/Equinox2.0 – Additional Information
2.0 hardware
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