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

As Lewis was playing the 11th hole, hitting her second shot over the green and her third back over the front of the green, noise came from the sky as a U.S.

From Golf Digest

Indeed, the melodies were born of the land and the sky, like the mist that rises from the earth when the yellow sun comes up from the south, and the "green noise" of spring breaks the iron cold.

From Project Gutenberg