pink noise


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pink noise

[′piŋk ‚nōiz]
(acoustics)
Noise whose intensity is inversely proportional to frequency over a specified range, to give constant energy per octave.

pink noise

A random signal of every frequency in the audio spectrum, in which each higher octave drops off 3 dB. The lower octaves have more power, and the higher octaves have less power. Pink noise is generated to test loudspeakers in a room as well as to "tune" a room for best audio reproduction.

Also known as "1/f noise," pink noise patterns have been found in music melodies, semiconductors and atomic clocks. They are also found in nature, including the sounds of wind and waterfalls. Contrast with white noise and Gaussian noise.
References in periodicals archive ?
The effect of noise on the produced vowel quality was similar in both two masking conditions, and no major differences between babble and pink noise were found (Figure 3).
Pink Noise Test appears Saturday at the Troubadour in West Hollywood along with Touch Candy and others.
On pink noise it sounded plenty full, maybe a bit much, so I wanted to turn it down a tad in that range, too, using a broad bass control.
Bumping the pink noise reading to 85 dB solved the problem.
Frequency response comparing is one of those things that pink noise allows one to do very well.
Now play the pink noise and it comes from the center.
As I have stated during all of my speaker reviews, I use that pink noise signal and do the measurement over a 20-second integration interval that the SA-3051 RTA allows me to do, while moving the microphone over a roughly 1 x 1 x 5 foot box area close to ear height at the listening couch.
Would an equalizer deliver a meaningful performance improvement with systems that are as inherently flat as those illustrated in Part 2, as well as the better of those illustrated in Part 17 Well, you can definitely tell a difference if you use pink noise and do some level-matched A/B switching.
83V pink noise - 6-ohm impedance - Recommended amplifier power: 5W to 75W - Easy flip-tab "dogs" mounting system - Dimensions: 9-1/4" diameter - Hole cutout dimensions: 8" diameter - Depth behind ceiling: 3-3/4" (based on 1/2" drywall) - Shipping weight: 7 lbs.
Interestingly, with uncorrelated (stereo) pink noise things were reversed and the SB3 systems sounded more spread out and spacious.
Measuring precision-generated, ruler-flat pink noise, the mike feeds a dbx pro RTA-1, a third-octave, extremely steep-filtered PC-based unit that features temporal averaging (also memories, arithmetic manipulations, export capabilities, etc.
I use uncorrelated pink noise for this test, which allows for a workable bass-level reading and also delivers a good simulation of how a pair of systems will propagate their total output throughout the listening room.