Table of Some Sound Sources
-
Situation
and
sound sourcesound power
Pac
wattssound power
level Lw
dB re 10−12 WRocket engine 1,000,000 W 180 dB Turbojet engine 10,000 W 160 dB Siren 1,000 W 150 dB Heavy truck engine or
loudspeaker rock concert100 W 140 dB Machine gun 10 W 130 dB Jackhammer 1 W 120 dB Excavator, trumpet 0.3 W 115 dB Chain saw 0.1 W 110 dB Helicopter 0.01 W 100 dB Loud speech,
vivid children0.001 W 90 dB Usual talking,
Typewriter10−5 W 70 dB Refrigerator 10−7 W 50 dB
Usable music sound (trumpet) and noise sound (excavator) both have the same sound power of 0.3 watts, but will be judged psychoacoustically to be different levels.
Read more about this topic: Sound Power
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