Noise that contains components at all frequencies, at least within the frequency band of interest. It is called “white” by analogy to white light, which contains light at all the visible frequencies. In the audible spectrum, white noise is a hiss or a roar, such as that produced when a television set is tuned to a channel over which no station is broadcasting.
A 'sh' noise produced by a stimulus containing all audible frequencies of vibration.
Broadband pseudo-random signal with uniform power in each frequency band: