Operation – Chapter 4
14
Further background information and hints for volume settings
Volume headphones:
•
Usually the volumes should be identical for both ears. If different values should appear to be neces-
sary and a peripheral hearing impairment has not yet been determined, it is highly recommended to
clarify any
fi
ndings visiting ENT specialist or an equivalent health care professional.
•
Increase the headphones volume of the client only gradually and carefully. The client shall listen in
and describe if the settings are suitable. Reduce the values immediately, if the client feels the volume
is too loud.
How do volumes interact / correspond?
•
When adjusting the volumes of the microphones and external sources (i.e. CD or MP3
fi
les), ensure
to listen in on them in the process. For example, when adjusting the microphone volume, continuously
speak into the microphone with a steady
fl
ow of words at approximately the identical loudness. This
way you notice the effect of your adjustments immediately
•
You can adjust the volume for all other sources (such as CD-player, MP3 player etc.) in the same
fashion.
•
Do not rely on the numbers showing on the display (+xx/- xx) as they serve only for orientation purpo-
ses. Your decision should be based on your actual hearing impression only.
Background noise
•
The standard background noise is socalled “white noise”. This signal contains (almost) the entire
spectrum of audible frequencies. Thus it can also be perceived by persons with speci
fi
c peripheral
hearing losses.
•
The noise is not lateralized = not wandering from ear to ear
•
Noise is used to improve language processing in noisy environments. Being able to blend out back-
ground noise and focusing on one speci
fi
c auditory information (voice) is a fundamental capability for
language processing in real life.
Recording…
•
• You need to have an additional LINE IN cable if you wish to record lateralized information or training
sesseions.
•
• If you wish to record a training session with a DAT or a regular tape recorder, use such an additional
LINE IN cable. Insert the binder plug (black plug with indention) into the Line OUT socket of the Alpha-
Trainer. Insert the green marked plug of the cable into the microphone socket of the recording device.
Menu: Volumes
