Public bug reported:

After the regular updates (on 20.04 and 21.10) audio had crackling noise on the 
USB audio interface, while it was normal on the internal audio.
Tried with different sound cards (presonus audiobox, behringer xenyx q802) and 
three different machines.
Might be in the kernel 5.13.0-37

Reverting to that kernel removed the problem: linux-
image-5.13.0-35-generic

** Affects: ubuntu
     Importance: Undecided
         Status: New

** Attachment added: "sound-problem.mp3"
   
https://bugs.launchpad.net/bugs/1966432/+attachment/5572869/+files/sound-problem.mp3

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https://bugs.launchpad.net/bugs/1966432

Title:
  audio crackling on usb sound card

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