from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Acoustical or electrical noise of which the intensity is the same at all frequencies within a given band.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A random signal (or process) with a flat power spectral density; a signal with a power spectral density that has equal power in any band, at any centre frequency, having a given bandwidth.
- n. Any nondescript noise used for background or to mask or drown out other noise.
from the GNU version of the Collaborative International Dictionary of English
- n. a mixture or random noise sounds extending over the entire audible frequency spectrum with approximately equal intensity at all frequencies. It is used in certain experiments, as in psychology, to prevent subjects from hearing meaningful sounds.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a noise produced by a stimulus containing all of the audible frequencies of vibration
From the analogy with white light.(American Heritage® Dictionary of the English Language, Fourth Edition)
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