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
Famous quotes containing the words table, sound and/or sources:
“Language was vigorous because, because ... editors usually laid all the cards on the table so as to leave their hands ... free for more persuasive arguments! The citizenry at large retaliated as best they could.”
—State of Utah, U.S. public relief program (1935-1943)
“I sound my barbaric yawp over the roofs of the world.”
—Walt Whitman (18191892)
“The American grips himself, at the very sources of his consciousness, in a grip of care: and then, to so much of the rest of life, is indifferent. Whereas, the European hasnt got so much care in him, so he cares much more for life and living.”
—D.H. (David Herbert)