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On Sat, 27 Dec 2008, Michael Hawkins wrote:
> Just 256 numbers in random order with values in the range 0-255, no
> repetitions.
============ ========= ==
http://smasher. org/tmp/shuffle- random.tgz
http://smasher. org/tmp/random. tgz
each of those gzipped tarball files contains 100 TXT files.
the first TGZ contains what you're asking for; lists with a random
"shuffle" of 0-255 with each value appearing only once per list.
the second TGZ contains what i think is more random; not a shuffle. so in
each file a given value may appear more then once, or not at all, with a
probability of... oh, what the hell am i talking about???
in any case, i suspect that a few files in each collection will stand out
as being not so great, most will be OK, and ∗maybe∗ one or two will stand
out as being better than the rest.
some crazy ideas to extend the period beyond 256 steps... done
iteratively:
read 0-255
read 127-0, 255-128
read 0-255, odd only
read 0-255, even only
read 255-0, odd only
read 255-0, even only
or... maybe it would be better to set a counter (1-8?) every time the
table is read, and use that value as a "skip". so the first time the table
is read it reads every value, the second time it reads every 2nd value...
the 8th time it reads every 8th value, the 9th time it reads the table it
reads every value... bonus points if that can be combined with an offset
start to make the period more than an order of magnitude larger than the
list ;)
offset 0, skip 1
offset 0, skip 2
...
offset 0, skip 7
offset 0, skip 8
offset 3, skip 2
offset 3, skip 3
...
offset 3, skip 7
offset 3, skip 8
offest 5, skip 2
offset 5, skip 3
...
i guess being a crypto-geek tends to make one a snob when it comes to
random numbers.
the "random" LFO will ∗always∗ be free-running. ..?
--
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