2.10.3
ABLB (Alternate Binaural Loudness Balance)
This test was first described by Fowler (1928).
Hearing levels at which a pure tone sounds equally loud to both ears of a subject are compared.
The test is applicable when there is a difference in hearing loss of at least 20 dB between the two ears at the pure-tone
test frequency.
2.10.3.1
Navigating in ABLB
The Control Panel
Channel
Continuous On
When checked, the stimulus will be continuously on and will turn off when you press the stimulus
button.
Transducer
Insert
Presents the stimulus through the insert earphones.
Phone
Presents the stimulus through the headphones.
High Frequency
Presents the stimulus through the high frequency headphones.
Routing
Left
Left transducer is considered the ABLB test ear.
Right
Right transducer is considered the ABLB test ear.
Test Options - ABLB
Transducer
dB Step
This determines the dB step size for the intensity of the reference stimulus tone. Options are 1 dB, 2
dB, and 5 dB.
ABLB dB Step
This determines the dB step size for the intensity of the ABLB test stimulus. Options are 1 dB, 2 dB,
and 5 dB. Natus recommends using a step size of 1 dB for testing.
ABLB Stimulus Bar
A.
Intensity
B.
Stimulus indicator
C.
Transducer indicator
D.
Routing indicator
E.
Stimulus bar color
F.
Frequency
Madsen A450
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2 Navigating in the Otosuite Audiometry module
