what is White noise and Pink Noise in Spectral acquisition

[akash123]

what is mean by White noise and Pink Noise in Spectral acquisition? please share details about this topics.

[bvrd]

Pink Noise=energy in every octave is same

White Noise=energy in every frequency is same

[PJS]

Here are some pictures of white and pink noise.

First, Octave based White versus pink:

And here is narrowband FFT (ie, a regular spectrum) of white versus pink: