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 DB Sound Levels
Decibel Table - Comparison Chart
1 0 (N) BEGINNING OF HEARING, A MOSQUITO 10 FEET AWAY, THE EAR DRUM MOVES LESS             
3.5  1E-10 METERS OF MERCURY = 0.0000000001 METERS OF MERCURY
10  ABSOLUTE SILENCE, ATT-BELL LABORATORY “ QUIET ROOM “
13 (P)  ORDINARY LIGHT BULB HUM
15  A PIN DROP FROM A HIEGHT OF 1 CENTIMETER AT A DISTANCE OF 1 METER  -REF.1.2003
18 Quiet Sound Room Background Noise level
20 Quiet Whisper from 5'
30 QUIET Bedroom
35 Soft Music
40 A WHISPER, A NORMAL CONVERSATION IS 60 DB,
45 Minimum Street Noise
50 Average Home
60 Conversation Speech
70 Vacuum from 3 ft away
80 Curbside of Busy Road
90 Diesel truck, 30 ft away
100 Very Loud Music From a Speaker
110 Chainsaw, 1m distance
120 Threshold of discomfort
130 Threshold of pain
140 Jet aircraft, 50 m away
For More Info on what is a Decibel......Visit Wikipedia's topic on Decibel

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