green noise

American  

[green noiz] / ˈgrin ˌnɔɪz /

noun

1. an unofficially designated noise signal related to white noise but having a limited frequency range, which produces a soft, steady sound resembling waves or surf: higher in pitch than brown noise and more limited in frequency than pink noise.

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Etymology

Origin of green noise

First recorded in 1990–95

Example Sentences

There’s a growing buzz around pink noise, brown noise, green noise — a rainbow of soothing sounds — and their theoretical effects on sleep, concentration and the relaxation response.

From Seattle Times • Jun. 4, 2024