[sdiy] dsPIC fun board

Tim Ressel madhun2001 at yahoo.com
Sat Jan 17 18:08:03 CET 2009


Hey all

I believe there is a certain set of features a DSP board needs to have. Here are things I think are mandatory:

Codec (at least 2x2 channels)
 -- How else to get audio in/out?

Midi
 -- This ubiquitous standard cannot be ignored

Swimming in RAM
 -- for time delay and table-driven effects

CV I/O
 -- again, a modular standard

USB
 -- for fast comms to a PC

Now there are implementation details not covered. For example I would have an AVR coprocessor handle Midi, USB, and possibly CVs. In other words, off load all non-dsp stuff onto a processor better suited for those kinds of tasks.

I think a board like that would be pretty universal. Now I know some are a bit intimidated by the thought of coding a DSP, and adding a coprocessor just ups the ante. Perhaps a clever implementation could have the AVR as an option and run without it if needed.

Man, this is exciting! 

--TimR



More information about the Synth-diy mailing list