[sdiy] FPGA

[Gordon JC Pearce]

On Wed, 26 Oct 2011 23:46:40 -0700
Noah Vawter <nvawter at media.mit.edu> wrote:

> 
> for a sampler, probably the most important concern is memory....    you'll want lots of control lines on your chip for memory...
> 
> for this reason, small AVRs are probably not recommended.  FPGAs are possible but if it's your first project they *might* be a challenge....maybe not who knows.  ARM is probably pretty good because they generally have lots of I/O lines.

Small AVRs work just fine as samplers, if you can live with a short sample and low sample rate.

Here's a cut-up Amen break, played from an ATMega 328 (actually an Arduino Duemilenova).  The filter sweeps are a real analogue filter, the actual sample is from the AVR - including the the software-defined circuitbending ;-)

http://www.gjcp.net/~gordonjcp/mp3s/glitchamen.ogg

-- 
Gordon JC Pearce MM0YEQ <gordonjcp at gjcp.net>