In collaboration with Acoustics.com, whitenoise.info, plans on expanding more on the subject of pink noise & white noise in the near future. However, due to the abundance of questions regarding this issue, we have put together a short summary in the meantime. The sound generated by electronic sound masking systems is commonly mislabeled as white noise. White noise has become the generic term for masking noise. Typically, masking noise is closer to pink noise than white noise. We, as humans, are more sensitive to high frequencies then we are to low frequencies. It takes more power for lower frequencies to sound as loud as higher frequencies. White noise is generally random noise played at the same level across the frequency spectrum. Since we do not hear the low frequencies as well as the high frequencies, white noise will sound "hissy" and will not adequately mask lower frequency noises. Pink noise is also played across the frequency spectrum, but is tuned so that each frequency sounds as loud as the other frequencies. This creates a "broadband", uniform noise that is more effective for masking sound. For more information, visit maskingsystems.com. Copyright © 2003 Acoustics.com