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:

    “Many a time I have seen my mother leap up from the dinner table to engage the swarming flies with an improvised punkah, and heard her rejoice and give humble thanks simultaneously that Baltimore was not the sinkhole that Washington was.”
    —H.L. (Henry Lewis)

    “There was a sound of revelry by night,
    And Belgium’s capital had gathered then
    Her beauty and her chivalry, and bright
    The lamps shone o’er fair women and brave men;
    A thousand hearts beat happily; and when
    Music arose with its voluptuous swell,
    Soft eyes looked love to eyes which spake again,
    And all went merry as a marriage-bell;
    But hush! hark! a deep sound strikes like a rising knell!”
    —George Gordon Noel Byron (1788–1824)

    “No drug, not even alcohol, causes the fundamental ills of society. If we’re looking for the sources of our troubles, we shouldn’t test people for drugs, we should test them for stupidity, ignorance, greed and love of power.”
    —P.J. (Patrick Jake)