Building the scanboard with a Nano I couldn't resist porting my DSP code to the Arduino.
So I added a MCP4921 12-bit DAC and after some optimizing it runs with a sample frequency of 8372hz.
So how does it sound?
I would say pretty good at 8KHz 12-bit PCM, It beats the heck out of all the Arduino Bleeps.
There is some aliasing due to my poor passive LP filter but overall its great.
Specs:
Arduino Nano at 8KHz and 12-bit PCM.
16-DCO with morph oscillators (arbitrary waveform)
16-bit 3 pole 18dB LP DCF with resonance (Yes, It rings)
1 LFO for filter.
1 ADSR ENV for DCA.
1 ADSR ENV for DCF.
All with 16-bit resolution.
So I decided to call it the dsp-G0.
Runs perfect on ATmega328 @ 16MHz.
