white noise


noun

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.
Physics. random noise with a uniform frequency spectrum over a wide range of frequencies.

Origin of white noise

First recorded in 1965–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for white noise

white noise

noun

  1. sound or electrical noise that has a relatively wide continuous range of frequencies of uniform intensity
  2. noise containing all frequencies rising in level by six decibels every octave
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012