يحدث الصوت عندما. الصوت

6 80—90 moving , 10 m distant 0 2 60—80 TV set — typical home level, 1 m distant 0
The earliest records of the study of this phenomenon are attributed to Ancient Chinese 3000 BCE An inexpensive low fidelity 3

0006 20—30 quiet rustling leaves, calm human breathing 0.

كيف يحدث انتقال الصوت
185 rocket launch equipment acoustic tests approx
كيف يحدث انتقال الصوت
165 100 134 hearing damage during short-term effect 20 approx
كيف يحدث انتقال الصوت
02 40—60 very calm room 0
100 from long-term exposure 0
60 normal talking, 1 m distant 0 85 traffic noise on major road, 10 m distant 0

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SRS
Al Moqatel
SRS