brown noise

American  

[broun noiz] / ˈbraʊn ˈnɔɪz /

Or Brown noise

noun

Physics.

1. a noise signal related to white noise but specifically produced by Brownian motion; a deep, roaring or rumbling sound, like thunder or a heavy downpour, that is lower in pitch than pink noise: sometimes used for promoting sleep and/or relieving symptoms of tinnitus.

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Etymology

Origin of brown noise

First recorded in 1985–90

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

While pink noise isn’t as low as white noise or as deep as brown noise, it’s still great for helping someone fall and stay asleep.

From Seattle Times • Jan. 1, 2024

For some with ADHD, brown noise quiets the brain.

From Washington Post • Nov. 26, 2022

I didn’t just want white noise and black noise – I wanted pink noise and brown noise!

From The Guardian • Mar. 7, 2016

I can now recognize what are widely described as the various “colors” of noise: blue noise is a muted, more summery version of white, while brown noise is bassy and deep.

From New York Times • Jul. 7, 2011