[Issue] cracking sounds

Patchbox OS MODEP
1

Hello, New Modep user here.
I have a raspberry pi 3B with patchbox and modep. Thé sounds comin from ibis unusuable and crakling.

I tried a Focusrite Scarlett Solo and a Laney IRT Pulse as sounds cards. I tried différent power supply (5v >2A) with no results.

Do you have ideas where the problem comes from please ?

Thanks you

2

Check alsamixer, reduce some levels from maximum if there are any. Also make sure you’re using big enough audio buffers in Jack settings for USB audio cards.

3

In addition to what @Giedrius suggested, also look at the XRuns information in Modep. If you’re seeing a high number there then the Pi3 might not be keeping up with the demand. Do you know what model of the 3 you’re using?

4

Unfortunately I tested a lot of buffer size without success…

5

I use the raspberry pi 3b v1.2 (2015)