white noise

white noise
1. Also called white sound. a steady, unvarying, unobtrusive sound, as an electronically produced drone or the sound of rain, used to mask or obliterate unwanted sounds.
2. Physics. random noise with a uniform frequency spectrum over a wide range of frequencies.
[1965-70]

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▪ music
      in music, the effect of the complete range of audible sound-wave frequencies heard simultaneously, analogous to white light, which contains all the frequencies of the light spectrum. The sound (musical sound) of cymbals and snare drums has white-noise characteristics. Electronically synthesized (music synthesizer) white noise can be filtered so as to produce combinations of frequencies not obtainable on traditional musical instruments; or the white noise itself may be used as an element of music.

      White noise is aperiodic sound (that is, its wave pattern (wave motion) is not repetitive) and consists of equal intensities of all frequencies of the audible spectrum.

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Universalium. 2010.

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