[sdiy] Digital VCA

[Matthew Smith]

Quoth David G Dixon at 28/08/11 09:24...
...
> I know.  I just really like the idea of digitally-controlled analog
> circuits, especially ones that are as reliable and idiot-proof as that
> particular VCA.

Well, you'll have two test-cases to work with :-)

I'll actually have one of the ADSR/LFOs (building two side-by-side) 
feeding CV into your VCA, the other feeding CV into the Korgasmatron - 
so both of your designs will be getting a workout from digital controllers.

And THIS is what I'm trying to achieve. Whilst I *could* do everything 
in an FPGA, I want to create a true hybrid, where digital, pure 
analogue, and analogue/digital modules can be put together in a 
mix'n'match arrangement.

By the way, for those interested in the microcontroller side of things, 
the ADSR/LFO prototypes are using Atmel ATMega128s. Long-term, I will 
probably be moving to Freescale MC9S08AC128 parts instead. Whilst the 
specifications are similar, the Freescale part has twice the ADC 
channels for one third the cost - plus about 16 more IO pins.

Cheers

M

-- 
Matthew Smith

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