Faq - Interacoustics Affinity 2.0 Additional Information

2.0
Affinity Additional Information

2.14 FAQ

Question:
After I accidently disconnected the USB my system behaves strangely – what could be the cause?
Answer:
If the USB is disconnected during testing the software suite should be restarted. Otherwise the connection
may be affected and testing may be compromised.
Question:
There is no target on my screen. What could be the reason?
Answer:
1. Please check that you have typed in or selected an
audiogram in the AUD tab. If no audiogram is
present the system cannot calculate a target
2. Please check that the transducer you have selected
in the Fitting prescription options corresponds to the
transducer used for the selected audiogram
3. For NAL-NL1/NAL-NL2 please make sure that all
important frequencies are included in the audiogram
(e.g. 500, 1000, 2000, and 4000 Hz). This also
corresponds for Bone conduction targets where you
need the BC values.
Question:
What is the broad band sound before some measurements and can it be switched off?
Answer:
The broad band noise that you hear before a measurement starts is presented ONLY when using broad
band test stimuli or wave files. This type signals must thus be preceded by this preconditioning and
calibration and it cannot be switched off. During the calibration/preconditioning the distance between the
loudspeaker and the reference microphone on the in situ headset is measured. This ensures a precise
measurement. If this calibration does not take place you cannot be sure if the correct input level enters the
ear canal and as a result you are at risk of measuring erroneous curve.
Question:
I have seen that when you perform REAR in Affinity
REAR target change with the choice of stimulus selection (much lower target with ISTS compared to
REAR target with warble or pure tone). However, REIG target remains the same whatever stimulus
had been chosen. Would you please send me some information/comment about that?
Answer:
The REIG (pure hearing aid gain) is the same regardless of what stimulus you use. This is because the
REIG is a calculation and not a measurement (REAR – REUR = REIG). The result of the calculation will be
the same regardless of whether it is REAR (ISTS) – REUR (ISTS) or REAR (Warble) – REUR (Warble).
Even though the REAR (ISTS) and REAR (Warble) are very different, this difference is also reflected in the
REUR (ISTS) and REUR (Warble). Thus, the result is the same.
2.0
REM440 using DSL mi/o fitting prescription the
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