These recordings were produced
by Dr. Charles Berlin, the lead author of the chapter on
Auditory Neuropathy. The simulations on the recording were
done by Dr. F.G. Zeng and the voice you hear is that of Dr.
Arnold Starr. The audio file was normalized by Val Sapcariu
of SJV Media.
The audio files are designed to
give hearing listeners an idea of what speech sounds like to
children who have either auditory neuropathy or hearing
losses for specific frequencies. Each example of a specific
frequency loss illustrates only how speech sounds if the
child has a loss at that particular frequency (pitch). Keep
in mind that most children with hearing losses have hearing
losses for more than one frequency, so to understand what
speech sounds like for any given child, you may have to
listen to several of the tracks of the audio files.
Look at your child’s audiogram
to determine which of the tracks below most closely
replicates your child’s hearing profile. For example, if
your child has a "sloping configuration," as described in
Chapter 2, that means he can hear lower frequencies
relatively well, but has trouble hearing high frequencies,
so you should listen to the tracks that illustrate high
frequency losses. If he has a "rising configuration," then
he has the opposite problem, and you should listen to the
tracks that illustrate low frequency losses.
Note that the audio files will
not give you a good indication of how loud or soft
speech sounds to any given deaf or hard of hearing child.
Tracks 5—20 were recorded as if the child has a 100 dB loss
(meaning that sounds have to be at least 100 dB for him to
hear them). If your child’s hearing loss is less than 100
dB, then he will be able to hear sounds at a softer level;
if it is greater than 100 dB, he will not be able to hear
sounds unless they are louder than 100 dB.
The odd numbered tracks contain
an explanation of what you will hear on the track that
follows. When the narrator uses the terms "high pass" and
"low pass," he is referring to the frequencies that are
audible. A high pass recording allows the high frequencies
to pass through to the listener’s ear but not the low
frequencies; therefore, it mimics a low frequency hearing
loss. When it is a low pass, that means the low frequencies
can pass through to the listener’s ear but not the high
frequencies; therefore, it is a high frequency hearing loss.
Before you listen to the
recordings, take a moment to compare your child’s audiogram
with the descriptions of hearing losses on the tracks below.
That way you can concentrate on listening to the tracks that
most closely simulate your child’s hearing loss.