[sdiy] Voltage controlled FPGA based synth?

[Tom Wiltshire]

On 12 Jul 2007, at 22:55, karl dalen wrote:

> But why name things Voltage Controlled, (e.g VCA) when its FPGA
> generated?!

What do other people think about this? If a circuit is controlled  
from a voltage that then goes to an AD convertor, is it a voltage- 
controlled circuit? Obviously it's a digital circuit, not an analogue  
one, but is it a voltage-controlled digital circuit? Perhaps the AD  
isn't really a part of the circuit and that what controls the circuit  
is the digital output from the A/D? What about if the A/D is on the  
same chip?!

Or is this just a question of terminology?

Personally, if you can grab a LFO from somewhere and feed the output  
of that to it to make something happen, I'd call it a voltage- 
controlled circuit. It might be digital inside, but it's still  
voltage-controlled.