[sdiy] 2164 SVF sound/noise?

[Neil Johnson]

Hi Jay,

> I haven't done any real work on looking at the SSM yet and I'm  
> wondering how topologies dealing with the virtual ground outputs of  
> the SSM will effect sound. I've found 4P LP and 2P SV topologies  
> out there but nothing like the cells used for the SSM, CEM and OTA  
> for HP and AP. Yes you can chain a couple of SV filters together  
> for 4P HP, 2P BP and 2P notch filters but the sound will probably  
> be different than the old, 4 cell topologies. Any comments, ideas  
> or suggestions here?

3P SVF: http://www.milton.arachsys.com/nj71/index.php? 
menu=2&submenu=0&subsubmenu=1

4P APF: http://www.milton.arachsys.com/nj71/index.php? 
menu=2&submenu=0&subsubmenu=3

Cheers,
Neil
--
http://www.njohnson.co.uk