[sdiy] minimum delay calculations

[Dave Manley]

Fernando de Izuzquiza wrote:
> I'd like to have such short delay times to experiment with delayed 
> feedback, semi-physical models, etc., but I see it's not easy...
> Neither BBDs nor 2395 & friends can be clocked fast enough... =:(
>
> ...but JH used his Storm Tide flanger for those kind of experiments...
> ...and the Serge WAD used BBD chips...
> So I thought it was possible somehow

I took a look at the Storm Tide, JH is clocking at max 1.5 MHz which 
gives a minimum of ~340uS.  The Serge
WAD is spec'd at minimum 500uS 
(http://www.serge-fans.com/wiz_audiomod.html).

-Dave