Ubuntu
pulseaudio package

  1. Bug #1801540
  2. Comment #66

Comment 66 for bug 1801540

Revision history for this message
In , parkerhovis (parkerhovis-linux-kernel-bugs) wrote :

I might have found the source of this problem at least for me. A while ago I set my Pulseaudio sample rate to 44100 to reduce crackling in my virtual machine audio but the sound card on my board runs at 48000.

What I did:
arecord --list-devices
arecord -f dat -r 60000 -D hw:CARDIDHERE,DEVICEIDHERE -d 5 test.wav

arecord told me that it could not record of a rate of 60000 and instead got 48000. This means my card has a sample rate of 48000

So I ran:
arecord -f dat -r 48000 -D hw:1,0 -d 5 test.wav

And suddenly I had a clear recording! The only problem is I have changed my sampling rate and alternate sample rate in /etc/pulse/daemon.conf back to 48000 but it still seems to be defaulting to 44100 in all programs.

If I run:
arecord -f cd -d 10 test-mic.wav
I observe it defaulting to 44100 and playing it back sounds awful again. Same with any other recording software, they are all still using 44100 for some reason which is causing the crackling.