Permanent, painless, preventable, progressive
The dog was frightened by the noise. - then
ears
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Four
1. White noise 2. Impulse noise 3. Echoes 4. Intermodulation
The process can take four to eight weeks for a scheduled hearing.
Four steps of hearing are: 1. Sound 2. Hearing 3. Recognition 4. REsponse.
oyer
physical noise phsycological noise message overload faulty assumptions
The four types of pollution are as follows: Land, Water, Air, Noise
Sight, hearing, touch and smell
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