Raspberry Pi analog audio is very noisy. An audible "pop" at each frame.

[mnstri]

The analog audio output on the Pi is very noIsy with OF. I know that the analog audio output is problematic on the Raspberry Pi in general, but it seems that there is an audible "pop" at each frame.

This is how I tested this with the soundPlayerExample:

• I set one of the samples to start playing on setup (beats.play()).
• I commented everything out from the draw() and mouse events.
• You can clearly hear the pops when changing the frame rate. With ofSetFrameRate(1) you'll hear a "pop" each second and with a faster frame rate you'll get a buzzing noise.
• I even commented out the ofSoundUpdate() but the noise was still there.

The same sound files play without any noise using aplay or mpg321 in the terminal.

Any ideas how to get rid of that?

[mnstri]

And oh... just realized that this happens with any OF app. Doesn't even have to have anything to do with sound.

[mnstri]

Tested now with a newer model of the PI and no more popping. So it was a hardware issue with the early Model B boards.