I'm working a lot with ALSA and I don't know what I did wrong but when I record with:
arecord --channels=1 --duration=5 --format=dat --vumeter=stereo test.wav
...and play it back I only get some noise, whereas it worked before.
So I reset ALSA with:
sudo /etc/init.d/alsa-utils reset sudo /etc/init.d/alsa-utils restart
A message indicates that I reset ALSA successfully
[ ok ] Resetting ALSA...done.
But I still have noise when I play back what I have recorded. What could be causing the noise, and how do I get rid of it?