[sdiy] Roland DCOs

[Florian Anwander]

Hello Tom

Tom Wiltshire wrote:
 > What I wanted to know is if anyone has built a DCO along these lines,
 > and what they discovered.

I did not build a DCO myself, but experimented a lot with the DCOs in 
the JX-3P. This had two results:

1.) in general it is more necessary, that the low frequencies have a 
correct wave shape than the high frequencies. This may be a matter of 
taste, but the low notes become thin, if the saw is not symmetric, while 
the high notes still are simply "bright" with an asymmetric wave shape.

2.) modulating this wave shape is fun, and I do not understand, why 
Roland missed that possibility. I am not sure, whether the metal cross 
modulation of the JX-3P uses some changed wave shape cv too. For sure 
using the DCO1 out as wave shape cv for DCO2 does very interesting results.

Florian