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Monday, August 1, 2011

The loudness of a sound is measured in decibels (db)

Noice Scale: General Knowledge


Sounds are tiny vibrations that can travel through air and other materials. The loudness of a sound is measured in decibels (db). Typical sound levels in decibels:

Note: 130 db causes damage to hearing.

1Breathing10 db
2 Wind in the trees20 db
3Whisper 20-30 db
4Ticking Clock30 db
5House in a quiet street35 db
6 Radio Music50-60 db
7Loud Conversation 60 db
8Office Noise60 db
9Children Playing60-80 db
10 Lawn mower60-80 db
11Vacuum cleaner 80 db
12Traffic Noise60-90 db
13Sports Car80-95 db
14 Heavy truck traffic90-100 db
15Loud Radio 100 db
16Motor Cycle105 db
17Pneumatic drill110 db
18 Thunder storm110 db
19Rock Music 120 db
20Aircraft Noise90-120 db
21Jet takeoff(at 100 meter distance)120 db
22 Jet Engine(at 25 meter distance)140 db
23Space Vehicle launch (from a short distance) 140-170 db

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