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Using
a pseudo-random number generator, it is easy to make noise in any number of
dimensions (e.g., 1D, 2D, 3D, and 4D).

*float vector1D[500];*

*for (int i = 0; i < 500; i++) *

* vector1D[i] = rand() / RAND_MAX;*

If one were to take the Fourier transform of such a signal, one would see that it contains all frequencies (low, medium, high) in equal amounts.

White light has all frequencies in the visible electromagnetic spectrum. By analogy, noise that contains all frequencies is called “white”.

One could try to model terrain using white noise. However, the signal would vary too much and the terrain would not look realistic – just random.

If one were to take the Fourier transform of such a signal, one would see that it contains all frequencies (low, medium, high) in equal amounts.

White light has all frequencies in the visible electromagnetic spectrum. By analogy, noise that contains all frequencies is called “white”.

One could try to model terrain using white noise. However, the signal would vary too much and the terrain would not look realistic – just random.

High

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