white noise

white noise
a) 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.

Conventional statistical analyses presuppose that intrinsic variability is white noise. White noise yields a jagged and irregular line with a fractal dimension of 1.5, because successive observations are statistically independent of each other.

b) Any nondescript noise used for background or to mask or drown out other noise.

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  • white noise — noun uncount the unpleasant noise made by a radio or television when it is not receiving the correct signal …   Usage of the words and phrases in modern English

  • white noise — white′ noise′ n. phs random noise with a uniform frequency spectrum over a wide range of frequencies • Etymology: 1965–70 …   From formal English to slang

  • white noise — ► NOUN Physics ▪ noise containing many frequencies with equal intensities …   English terms dictionary

  • white noise — n. [by analogy with WHITE LIGHT] a sound containing a blend of all the audible frequencies distributed equally over the range of the frequency band …   English World dictionary

  • White Noise — White Noise,   weißes Rauschen …   Universal-Lexikon

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