Glitch during playback

[grundew]

I'm playing back a continuous sine at 250 Hz and occasionally I get a glitch in the middle of the tone.

I always get a glitch at the start and the end.

I have tried both using a callback written in python and in c to try to avoid the GIL and GC disturbing something. But none of them help.

I've also played around with different latency settinga without luck.

Audio interface: focusrite 18i20 Os: windows

[mgeier]

If you start and stop a sine tone abruptly, it is expected to hear an glitch.

See e.g. https://nbviewer.org/github/spatialaudio/communication-acoustics-exercises/blob/master/intro.ipynb#Listening-to-the-Signal

If there are glitches in the middle, there are two likely reasons:

• over/underruns, check status
• your signal processing is wrong

If you share your code (reduced to a minimum), I might be able to help spotting the problem.