Hmm, none of these are 1 channel. I do want 2 channels but so far I've got 1 electret cartridge on prototype board trying to figure out how much amplification I need. USB Sound Device at usb-3f980000.usb-1.5, full speed : USB Audio Playback: Status: Stop Interface 1 Altset 1 Format: S16_LE Channels: 8 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 2 Format: S16_LE Channels: 2 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 3 Format: S16_LE Channels: 4 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 4 Format: S16_LE Channels: 6 Endpoint: 6 OUT (ADAPTIVE) Rates: 44100, 48000 Interface 1 Altset 5 Format: S16_LE Channels: 2 Endpoint: 6 OUT (ADAPTIVE) Rates: 96000 Capture: Status: Stop Interface 2 Altset 1 Format: S16_LE Channels: 2 Endpoint: 5 IN (ASYNC) Rates: 44100, 48000 On 7/20/20, Clemens Ladisch via Alsa-user <alsa-user@xxxxxxxxxxxxxxxxxxxxx> wrote: > Alan Corey wrote: >> arecord -f S16_LE -d 10 -r 16000 --channels=1 --device="hw:2,0" >> /tmp/test-mic.wav >> Recording WAVE '/tmp/test-mic.wav' : Signed 16 bit Little Endian, Rate >> 16000 Hz, Mono >> arecord: set_params:1345: Channels count non available > > I suspect recording always uses channels. > Please show the contents of /proc/asound/card2/stream0. > > > Regards, > Clemens > > > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > -- ------------- No, I won't call it "climate change", do you have a "reality problem"? - AB1JX Cities are cages built to contain excess people and keep them from cluttering up nature. Impeach Impeach Impeach Impeach Impeach Impeach Impeach Impeach _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user