Dynamic Range View; Aided Versus Unaided - Interacoustics Affinity 2.0 Additional Information

2.15.6 Dynamic range view

The hearing thresholds converted to SPL and the UCLs provide a dynamic range view. This provides the
option to show that speech sounds are above thresholds and are within the area where the client can hear
(but without being uncomf ortably loud).
You can demonstrate the reason why the relatives/loved ones do not need a hearing aid, but the client does
by pointing out the Normal Hearing thresholds marked in red.
Perhaps present a loud input or speak loudly to visualise the compression of sounds in the hearing aid and
point out that peaks in amplif ied sound never go beyond the MPO and UCLs.

2.15.7 Aided versus unaided

If the client/relatives have no experience with hearing aids, it may be a good idea to f ocus on the dif f erence
between the aided and unaided. This helps to demonstrate the hearing aid benef it ef f ect and the importance
of wearing instruments. If f itting children, this also gives a good basis f or discussing language development.
Note that the unaided graph shows the dB SPL at the ref erence microphone and the aided graph shows the
SPL at the ear drum.
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2.16
D-0004576-Q – 2022/05
Affinity/Equinox2.0 – Additional Information
Dynamic range
Normal hearing thresholds
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