Of all the colors of noise, you should be concerned about white noise because of its immense applications, which includes, but not limited to the following:

• Aiding Sleep
• Enhance Privacy
• Block Distractions
• Mask Tinnitus
• Configure Audio Equipment
• Soothe Migraine..

There is a web app called Simply Noise which produces white noise of your choice. Remember the good old days of Doordarshan, and the off air telecast was nothing but black/white spots with extremely annoying sound, that sound is white noise.

Sometimes noise can be good
—Anonymous