Definition of white noise
1a : a heterogeneous mixture of sound waves extending over a wide frequency range — compare pink noiseb : a constant background noise; especially : one that drowns out other sounds
2 : meaningless or distracting commotion, hubbub, or chatter the white noise of policy and politics in America — Joseph Nocera
First Known Use of white noise
Medical Definition of white noise
: a heterogeneous mixture of sound waves extending over a wide frequency range that has been used to mask out unwanted noise interfering with sleep—called also white sound
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