Science Fair Project Encyclopedia
Brown noise
In science, brown noise takes its name from Brownian motion, a sort-of random, foot-stepping pattern of motion. The graphic representation of the sound signal mimics a Brownian pattern. It decreases in power by 6 dB per octave and, when heard, has a "damped" or "soft" quality compared to white and pink noise. See also violet or purple noise , which is a 6 dB increase per octave.
So-called "brown noise" was featured in an episode of South Park (Worldwide Recorder Concert ) as a sound that caused people to lose their bowels uncontrollably, though the sound in the show was a low tone, not noise. In reality, very loud infrasonic tones are rumored to have this effect, see brown note.
See also
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details