White Noise

White noise is a sound containing all of the audible frequencies generated with the same power intensity, sounding like intense static. It will sound more strident than pink noise because, at equal power intensity, the short, upper frequencies are more easily generated than the long, lower frequencies.

This definition/audio clip/image is licensed under the GNU Free Documentation License found at http://www.gnu.org/copyleft/fdl.html . It uses material from the Wikipedia article at http://en.wikipedia.org/wiki/White_noise.

The sound of white noise.

As can be seen in this image, the intensity of the signal remains consistent across all frequencies.