Anl Test - Interacoustics Affinity 2.0 Additional Information

2.0
Affinity Additional Information

1.7.17 ANL Test

The Acceptable Noise Level (ANL) Test is a method of determining how much noise the patient is able to
tolerate whilst listening to a target signal/speaker (Nabalek et al., 1991). It is used as a predictor for how well
a patient will cope with amplification when receiving a hearing aid (Nabalek et al., 2006).
The ANL test is designed to be performed via loudspeaker as it is a free field test. However, it can be
configured to perform monaurally via selection of headphones and routing the signal to the relevant ear-side.
The Equinox and Affinity systems can perform the test binaurally via the R+L feature.
The ANL Test can use any of the materials you have already ripped into your Interacoustics Suite software.
When should I perform the ANL test?
The ANL test is typically performed before the patient is given any form of amplification as a rehabilitative
action for their hearing loss.
Test Procedure
1. Launch the Affinity
2. Click on the AUD tab on the upper right hand side of the screen. Ensure that your Audiometry has
been performed ahead of advancing into the SIN test as this determines the start level for the test.
3. Click on Menu, Tests and then select ANL
4. Once in the ANL test screen, you will see that there are 4 different conditions which you can choose
to measure.
MCL High – This is the loudest comfortable level the patient can listen to without any competing
noise
MCL Low – This is the lowest comfortable level the patient can listen to without any competing noise
MCL Real – This is the patient most comfortable level without any competing noise
BNL – This is the actual ANL test where the MCL Real is presented and the competing noise is
manipulated to find an ANL value
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/Callisto™ Suite from Noah or OtoAccess™.
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