I am planning to use several Arduino to produce audio range analog signals. I need to use custom waveshapes generated on the fly. As far as I understand, there are two paths:
- Aquiring a DAC, but can I send instructions fast enough (the Arduino needs to process the waveshape table) for audio rate signals? On a DAC like this one, I see that it supports a 100kb/s standard I2C and a 12 bit precision, so my guess is I will have
100kb/s / 12b / 10kHz = 0.8 input/periodat 10kHz... Will this suffice? Or will it creates compression artefacts?
- Using the Mozzi library, but it seems to me it outputs through a PWM digital IO pin. As I have a lot of Arduino to process, I would like to limit the number of RC circuitry I have to solder. Moreover, can Mozzi use custom waveshapes?
If you see any other solution, you are very welcome !
Thanks in advance