[sdiy] Walsh update

[John L Marshall]

----- Original Message -----
From: Neil Johnson <nej22 at hermes.cam.ac.uk>
To: John L Marshall <john.l.marshall at gte.net>
Cc: Magnus Danielson <cfmd at swipnet.se>; <synth-diy at dropmix.xs4all.nl>
Sent: Sunday, March 24, 2002 2:51 PM
Subject: Re: [sdiy] Walsh update


> Thought I'd drop in on this thread :-)

Why kill a thought provoking topic?

>
> Erm... there is no simple mapping from sine (Fourier) to Walsh -- you'd
> need an infinite (well, ok, band-limited) set of Walsh functions to
> approximate a sinewave, and vice-versa.  But it is a neat idea to be able
> to modify the harmonics while playing :-)
>
Somewhere, I have a table of resistor coefficients from Walsh to summing
opamps to produce f through 10f.

Take care,
John