WHITE NOISE CENERATOR

摘要

A white noise signal has equal intensity at all frequencies in the band of interest; for example, 20Hz-20kHz for audio. It's the hissing sound diat you hear if you tune an analog FM radio to a frequency on which there is no transmission. There are many reasons why you may want a white noise signal. For example, you can use white noise to drown out external noises that may interfere with your sleep. If that dripping tap is keeping you awake, don't count sheep; try a low-volume white noise source with a speaker close to your bed.