Better audio system/hardware

grasuth commented 5 years ago

current PWM audio sucks in general, so move to better hardware (i2c-based d/a etc) or use what is on the pi zero already and bring the pins out.

grasuth commented 5 years ago

I think in general we want to move away from PWM and use proper audio system. i2c chip would be really nice along with proper audio.

To make it nice in software, from my limited understanding, this will be either:

adding a tone generator device to pulseaudio via C/C++ libs (should interface into Go okay but who knows) or:
using a midi device (should be a byte stream kind of interface into the /dev tree I imagine; which will also need midi device setup etc.

And in general needs some wrangling of the audio system on the Pi. But probably can also be multi-platformed pretty easily too.

grasuth commented 5 years ago

Discussion with @m0vva: decided that custom i2c audio is probably the way to go, and best to avoid the full pi audio subsystem.

G0WCZ / cwc