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

Siest Sleep explained that brown noise can “clear your mind of chatter and calm your mind before sleep. Also, they help mask other sounds so your brain is not interrupted when you sleep.”

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

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 Seattle Times • Jul. 7, 2011