Since an upgrade of Manjaro, recording quality was awful. Nothing seemed to work. I happened on alsa.openscr.org and learned about ALSA settings. Using the command line “alsamixer -c 0” I could see the settings on all my devices, including microphone. The mic was set way up into the red. Using left/right and up/down keys, I reset the volume and now have my old recorder back.
Good tip Kevin. Pleased to hear you’ve got it running.
Just to give a bit of explanation to that. “alsamixer” is a graphical mixer for the ALSA sound system that runs in a terminal. The “-c 0” switch selects the first sound card (index 0), which is usually the built-in sound card.
You can also select the sound card from within alsamixer by pressing the F6 key. This is useful if you have multiple sound cards installed (for example, a built-in sound card and a USB sound card). The command alsamixer with no additional parameters will open alsamixer with the default device selected, which on most modern Linux systems is PulseAudio. In this case there will be just one output (playback) slider, and one input (capture) slider - PulseAudio handles mixing separately from ALSA.