audio issues on Raspberry Pi B+

[erwincoumans]

Cool project. I ran it on rPI B+ and A+ and you can hear the midi file playing, but there are strong ticks/clicks/audio interference. Could it be hardware changes?

[Joeboy]

To be honest I have no idea, and my pi is now languishing in a drawer somewhere. I don't recall hearing clicks / interference when I ran it, but I don't claim to have audiophile ears. Be sure to report back if you work it out!

[erwincoumans]

Thanks for your feedback. I could compile the code base from source on Linux, but it is going to be hard to track this down. Do you have any tips how to play a plain sine wave using your bare metal framework (to isolate the problem)? Otherwise just close/ignore the issue :-)

[Joeboy]

Should be fairly easy to modify the main loop in pitracker.c to just output a sin wave or whatever.