White noise is a random signal (or process) with a flat power spectral density. In other words, the signal’s power spectral density has equal power in any band, at any centre frequency, having a given bandwidth. White noise is considered analogous to white light which contains all frequencies.

So that answers the what, now how about the why?  Here are some of the uses for white noise that are out there:

• Aid Sleep
• Enhance Privacy
• Block Distractions
• Mask Tinnitus
• Configure Audio Equipment
• Soothe Migraines

Getting back to the web site, Simply Noise – all it does is give you an orb to slide back and forth to increase or decrease the white noise they provide.  What exactly is the noise they use?  Think of it as the static sound you here when there is a TV channel not coming in clearly.  All in all – this site does the job in a very simple way.  Maybe in the future they can have the white noise come up via a popup window?  That way if I needed it I could have it loaded up without having to keep the URL open 24/7.