www.piclist.com/techref/method/math.htm?key=random

BY : Keith Causey email (remove spam text)

Another property of random number sequences is that there are no long

autocorrelations. A 64k snippet, or any other snippet for that matter will

eventually have a 100% overall autocorrelation. You may rethink your reasons

for needing random numbers and decide that pseudorandom numbers will do.

They are easy to generate algorithmically as you already have discovered.

The most economical solution that I have seen so far is the diode scheme.

Once that is generated then sampling it with an analog to digital converter

to the desired resolution is all that is needed. This should result in a

totally noncorrelatable sequence. Of course the catch-22 is that to

determine if a sequence has 0 autocerrelation you have to look at it

forever.

See also: www.piclist.com/techref/method/math.htm?key=random