Korg Poly800/EX800 Users

On Fri, 9 Jan 2009, Michael Hawkins wrote:

> You're right about the UI.I am confronting the difficult truth that we 
> have almost run out of extended parameters to use for new features.
==============

or admit that further addition of features needs an LCD, and soon after 
that a new CPU ;)


> Yes, I am thinking about designing a brand new synth module. There's 
> really only one thing stopping me. <Drum Roll>
>
> The filter! I am not a VCF designer. I actually love the design of the 
> NJM2069. And it is a damn shame it is no longer available in quantities 
> otherwise i would use it in a heartbeat.
>
> So if there is anyone out there that can point me at a good audio VCF 
> chip that is available on the market today. Please point me toward it.
===============

didn't DSI run some curtis chips for their new stuff? maybe you can buy in 
bulk from them?

or you can use discrete elements and just copy the old moog & arp 
filters... those patents are expired now, but several factors would 
probably force you to use those designs only as starting points.

and there's maxim - http://www.maxim-ic.com/products/filters/
  i'm not sure if any of those are suitable for synthesizers, but last i 
looked (a few years ago) some of them seemed, on paper, like they would 
work well.


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