Sound Power - Table of Some Sound Sources

Table of Some Sound Sources

Situation
and
sound source		 sound power
Pac
watts		 sound power
level Lw
dB re 10−12 W
Rocket 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 concert		 100 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 children		 0.001 W 90 dB
Usual talking,
Typewriter		 10−5 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:

    ““A sigh for every so many breath,
    And for every so many sigh a death.
    That’s what I always tell my wife
    Is the multiplication table of life.””
    —Robert Frost (1874–1963)

    “The spotted hawk swoops by and accuses me, he complains of my gab and my loitering.

    I too am not a bit tamed, I too am untranslatable,
    I sound my barbaric yawp over the roofs of the world.”
    —Walt Whitman (1819–1892)

    “The sources of poetry are in the spirit seeking completeness.”
    —Muriel Rukeyser (1913–1980)