[sdiy] Using analog for physical modeling

[Tom Wiltshire]

On 20 Sep 2011, at 23:23, Matthew Smith wrote:

> Quoth Paul Perry at 21/09/11 07:45...
>> ...What would be the 'best' (cost, size, low parts) way to
>> go about mainng an all-digital BBD look-alike?
> 
> A low pin-count FPGA with onboard ADC/DAC. I can think of just SO many (audio) applications!
> 
> Dream on. (If size weren't an issue, something like Xilinx Spartan 3AN with support components might fit the bill - they've got onboard FLASH, which cuts the parts count/size.)


Isn't that what the Princeton PT2399 is trying to be? - except that it won't go short enough to do flanging, and only just for chorus. PIty, that. So close, but no banana. They should have added a VCO modulation input too, to save the craziness people do to modulate it. Still, it's about the best modern option, and very much the successor to the original BBDs.

The FPGA and a codec chip wouldn't take up much space. The various power supplies needed might be more of a pain to sort out. If it's going to be a BBD replacement, it ideally needs to run off typical analog voltages (+9V, +12V, +15V etc).

T.