digital vs analogue

[Sean Costello]

Paul Nugteren van wrote:

> Now the practical problems I would like to discuss; 1. With the help
> of the internet community, could we make a good emultaion of say a
> moog 24db/oct filter? 

There has been a fair amount of research done on this already. Check out
Timothy Stilson's site at Stanford:
 
http://www-ccrma.stanford.edu/~stilti/papers/Welcome.html

and read the paper on the digital implementation of the Moog filter.
Besides Stilson's work, Harvey Thornburg has done some work on
implementing the various nonlinearities that arise in the Moog filter.
Without the nonlinearities, the Moog emulation sounds more like a Roland
filter - nice, precise, but too darn clean.

> 2. Can the hightech computer boards used in
> todays synthesizers be modified by users with not so hightech
> equipment?

Doubtful. You would have to modify the ROM code (or the assembler code
stored in flash memory) for the Nord synths, in order to get the DSPs to
do more - and I really doubt that Clavia would make that code public.
Can anyone else on the list think of a way of getting in there?

> I hope I've finally found the right discussion group.

There is some digital discussion on this list, but it is mostly analog.
For pure DSP stuff, try the music-dsp list:

http://shoko.calarts.edu/~glmrboy/musicdsp/music-dsp.html

Sean Costello