[Fpga-synth] New project - ARM & FPGA Audio board

[Magnus Danielson]

Eric Brombaugh skrev:
> Hi List,
> 
> I've been working on a new project with an ARM MCU and small Xilinx 
> FPGA. Details here:
> 
> http://members.cox.net/ebrombaugh1/synth/armfpga/index.html
> 
> I've had a bit of input from Scott Gravenhorst and Magnus Danielson on 
> some of the features. Hopefully this rolls up a bunch of stuff that 
> people would like to do in FPGA synthesis.
> 
> Let me know what you think!

I had one comments from a friend of mine which is deep into precission 
and he made the note that the S/N ration of the A/D and D/A could be a 
few dB better... it was not up to state of the art. I'll try to get 
detailed feedback (will most probably be in the form of the schematic).

I think it really depends on what you expect it to be I guess.

I commented that you can always hook a better CODEC on the outside 
anyway, when you need it. Could be good to recall.

He also asked if it could pull of real-time (back-to-back) 1 Msamples 64 
bit FFT for a 200 kS/s rate. By a quick exambination it looks not all 
that impossible really. The multiplier blocks needs to be combined to 
create sufficient bit-resolution. I think it is mostly an issue about 
coding abilities than anything else.

Cheers,
Magnus