[sdiy] Bubble memory analog delay?

[rburnett at richieburnett.co.uk]

> I'm sure just like with tape drives not only "0" and "1" could be
> stored but any voltage inbetween.

It's an interesting idea, but I think these types of memory rely on 
fully flipping the magnetic domains in order for the states to properly 
propagate down the line.  "Intermediate" states probably woudln't 
propagate because the delay-line is not a linear device.  Much better to 
use modern DRAM derivatives for digital audio delays in my opinion.

-Richie,