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Bibliographic information
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Koji Nagahata
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The Journal of the Acoustical Society of Japan, 56(6), 406-417, (2000).
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Abstract
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In this study, how visually impaired persons identify the places using
environmental sounds around them is analyzed.
The method of this survey is shown below; environmental sounds recorded
at the places where subjects had been to are presented via headphones
and DAT. The subjects are asked to identify places from each presented
sound, and to indicate where the places are and why they identify the
place there. The sounds which are pointed out by each subjects identifying
the places are clustered using cluster analysis to reveal the processes of
identifying the places using the sounds.
As a result, it is found that there are two types of structures how visually
impaired persons identify the places using the sounds. One style is a
"Steps style structure"; One knows a rough character of the place from a sound,
then he knows more characters in detail from other sounds. After several
similar steps, he finally identify the place. And the other is a "set style
structure"; One identify the place from a set of the characteristic sounds.
Regardless of which structures one chooses for identifying the places,
the sounds using for identifying the places are different from the person.
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