[sdiy] FPGA

[Noah Vawter]

I have seen your work Gordon and it is impressive....   have you managed to record into an 8-bit AVR?
My calculations show that it's possible, but the mem writer has to be in the bootloader section and I haven't bothered to deal with that yet...

ps. here's my 4-bit amen which I did before I found yours :)   I did an 8-bit too but can't find it atm.

http://soundcloud.com/snackmaster-1/amen-processor-4-bit-wav



On Oct 26, 2011, at 11:56 PM, Gordon JC Pearce wrote:

> 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>
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Noah Vawter
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