Outsource Industries Inc. OSIPSSLTX ユーザーズマニュアル

ページ / 66
The Sound Localization Guidebook Prototype
 
|
 Appendix A 
|
 
69
Appendix A: Using sound in performing 
O&M tasks
A person moving without vision relies on hearing to 
structure interaction with the environment. Depending on 
the situation, sound can be used in very different ways to 
obtain information about the environment. This manual 
deals with the fi rst level of practical use of sound for 
navigation: interactions with single, discrete sound sources. 
Interaction with single, discrete sound sources is basic to 
many auditory skills and practicing these interactions can 
aid development of other, more complex or subtle acoustic 
skills. Other practical uses of sound in navigation include 
paying attention to more than one source at a time, using 
the sudden absence of sound to recognize a doorway or 
opening, and paying attention to reverberation delay to 
estimate the size of a room or the presence of a large object.
Recall that there are fi ve levels of learning that characterize 
the effective use of discrete sounds in the environment.
 1. 
 Awareness
 2. 
 Discrimination
 3. 
 Interpretation
 4. 
 Localization
 5. 
 Conversion
A child must fi rst be aware of a sound. The child then learns 
to discriminate one sound from another or one sound within 
a background of other noise. A child must also be able to 
17820 Sound Local.ind   68-69
6/24/05, 11:36:19 AM