09. 07. 2006
Pink noise, the new white noise
Who would have thought that they could improve white noise? But apparently they have, and they call it pink noise.
The CD smooths out amibent background sound and is used to help with work, sleep and mediation. Earplugs.com recommends it for "medium to lower frequency noises." For the traditionalist, they also offer CDs with white noise, rain, wind and fan. The site provides sound clips of pink noise and the others.
The Pink Noise CD lists at earplugs.com for $7.95.
(I love the name of this store. They also sell red, white and blue striped earplugs when you are feeling patriotic. Useful for watching July 4th fireworks, I suppose.)
Posted by Ray
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Comments (1)
Pink noise is not new. It is a common test signal in professional audio, used for EQing speaker systems.
White noise is equal energy per frequency, ie: same amount of sound for every frequency in the hearable spectrum.
Pink noise is equal energy per octave of the hearable spectrum.
In the bass end, an octave (area between double of half of a frquency) covers very little territory, for instance between 40 and 80hz is one octave. In the treble end an octave between 4000 and 8000hz covers 4000hz insted of 40.
So white noise has lots of treble in it and pink noise has much less.
White noise is a hissing sound while pink noise sounds more like rainfall or wind, much more pleasant.
bardo monitor | September 8, 2006 4:49 AM
September 8, 2006 04:49