[sdiy] Best software noise algorithm?

[ASSI]

On Wednesday 17 February 2010, Tom Wiltshire wrote:
> Have people got any good tricks to share for making random numbers
> quickly ?

Pseudo-random numbers are really hard to get right, nearly white 
spectrum less so (a bit on the pinkish side often sounds better to my 
ears, anyway).  You could try some chaos-based generators, they are 
probably more efficient on MIPS4k than bit fiddling.  Another idea (as 
already been mentioned) is to use several shortish-cycle RNG (with 
their cycle lengths relatively prime) and interleave and/or mix them.  
In contrast to true random numbers, some mild short-term correlation 
in a musical noise generator may actually be of advantage rather than 
objectionable.


Achim.
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