[sdiy] poor man's alternative to a CS-80?

[The Old Crow]

  I went through a lot of different configurations of OTAs in finding my 
favorite (sounds to me the most alike) Yamaha-inspired SVF.  The only OTA 
that needed linearizing was the resonance feedback cell.  I made a lot of 
trial-and-error gain adjustments to obtain good SNR.  JH's models were 
quite helpful back then.  (It has been 4 years already!)

Crow
/**/

On Thu, 20 Oct 2005, JH. wrote:

> > Jurgen Haible did a pretty nice analysis of the VCF. By comparing it and
> > normal SVF, the modifications are rather simple to do to a digital SVF.
> 
> Thanks for the reference.
> 
> However, keep in mind that I have presented an analysis of what I could
> extract from Yamaha literature. That's just the basic linear system
> behaviour. In no way would I claim that this covers the actual filter in
> all aspects. It does not cover any nonlinearities, for instance. Maybe
> the actual circuit is quite linear (what I would guess - but it's just a
> guess), then it should be described by my analysis pretty well. If not,
> well - then it isn't. The problem is that I can never know.
> 
> When I have information about the _circuit_ (as I had for the SSM2040),
> the situation is much better.