2 modules ideas

[neil.johnson at camcon.co.uk]

Paul wrote:

--

>
> For more info browse around my website - there's a whole section devoted
to
> Walsh functions:
>
> http://www.njohnson.co.uk
>

oh yes, The definative Walsh function site!

> BTW: just about finished my last major project (MIDI Matrix 2 -
programmable
> 8-channel MIDI routing unit with a very nice engraved front panel) and I
think
> the next major project will involve Walsh functions.  I'll try and get
photos of
> the MIDI Matrix 2 up on the site today (but don't hold your breath...)
>

Kewl, what processor did you use?

Id like to do a walsh function synth 32 functions with VCF, two sets of
functions
pervoice and a VCF/VCA, thats 66EGs in total... I need to find a simple way
to program
them.. anyone ever seen the AXCEL re-synthesiser? I may do it like this.

--

Thanks for the complement!

It uses an 8051, mainly 'cos I had one looking for a home and I have a Keil C
compiler for it :-)

Yes, I've heard tell that the Axcel Resynthy-beastie did Walsh synthesis as part
of its repertoire. Would dearly love to get my hands on one ... or I shall have
to build my own version.

I agree that programming an additive synth using, eg. Walsh functions, is going
to be a user interface nightmare, what with hundreds (!) of envelopes to
consider.  However, I think the way round that is to take a higher-level
approach to programming.  Instead of twiddling each envelope parameter yourself,
you draw waveshapes or harmonic patterns then let some software generate all the
envelopes necessary to morph between the various harmonic groups.

For example, start with a trumpet, fade into a piano, then cycle back and forth
between a cow fart and a thunderstorm every 5 seconds.

Sort of akin to programming: manually twiddling envelopes is like assembler
programming, now we want to program in a higher level, like Fortran or SQL.

Neil
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