The results are shown below. Most interesting is to watch the power-law noise spectra rotate and smooth out. There are some interesting slope changes at the high frequency ends of the more negative Betas, perhaps not terribly unexpected in the case of the pure noises being generated.
Animated loop of all digital spectrum analyzer images. (64 KB)
Time to download
14.4 kbps: 48 s;
28.8 kbps: 24 s;
56 kbps: 13 s;
and ISDN: 6 s.
Kasdin, N.J. and Walter, T. (1992), "Discrete Simulation of Power Law
Noise," in Proceedings of the 1992 IEEE Frequency Control Symposium, pp. 274-283.
Barnes, J.A. (1993), "A Digital Equivalent of an Analog Spectrum Analyser," in Proceedings of the 1993 IEEE Frequency Control Symposium, pp. 270-281.