[sdiy] Walsh Functions/EN S-008

[Pete Hartman]

There are a wide range of folks on here, including some who've been doing
this stuff since ElectroNotes was young :) so I'm hoping maybe someone can
help.

I was perusing old issues, in particular #16, which came with a supplement
S-008 on Walsh functions.  These functions were also discussed somewhat in
#16 and a couple subsequent issues.  However I don't have a copy of S-008,
and after asking Bernie about it, he has so far been unable to locate a
copy.

I suppose if I had my head more fully around the math of Fourier series it
might not be so difficult for me, but I'm not grasping the entire idea of
using the Walsh functions for waveform generation, and I'm kind of
interested.  My thought is that while, as Bernie points out in #16 and his
paper for AES, the generated waveforms themselves aren't particularly
notable, modulating the coefficients of the different waveforms might sound
different than other types of waveform modulation.  I'm interested to play
around with it in any case.  Big picture wise, I see the parallel to
Fourier and understand the concept, I'm just not following the nature of
the coefficients to generate specific waveform types.

I got the impression from the references to the supplement that it might
help get me over the block I'm having.  But not having it myself, and so
far unable to get one from the source (despite his much appreciated search
for same) the question turns to whether any of y'all out there might have a
copy of S-008?  If so, and if we can get Bernie's blessing (and probably
send him a copy too), I'd be interested in some form of it that I could
read.

Thanks!

Pete
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