A sound level meter or sound meter is an instrument which measures sound pressure level, commonly used in noise pollution studies for the quantification of different kinds of noise, especially for industrial, environmental and aircraft noise. However, the reading from a sound level meter does not correlate well to human-perceived loudness, which is better measured by a loudness meter. The current international standard that specifies sound level meter functionality and performance is the IEC 61672:2003.
Famous quotes containing the words sound, level and/or meter:
“There is a sound of music echoing
Through the open door
And in the field there is
Another sound tinkling in the cotton:
Chains of bondmen dragging on the ground.”
—Arna Bontemps (1902–1973)
“Jealousy is indeed a poor medium to secure love, but it is a secure medium to destroy one’s self-respect. For jealous people, like dope-fiends, stoop to the lowest level and in the end inspire only disgust and loathing.”
—Emma Goldman (1869–1940)
“His meter was bitter, and ironic and spectacular and inviting: so was life. There wasn’t much other life during those times than to what his pen paid the tribute of poetic tragic glamour and offered the reconciliation of the familiarities of tragedy.”
—Zelda Fitzgerald (1900–1948)