Re: [Alsa-user] New user with an ICUSBAUDIO7D

2020-07-20 Thread Clemens Ladisch via Alsa-user
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. Ple

Re: [Alsa-user] New user with an ICUSBAUDIO7D

2020-07-20 Thread Alan Corey
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-3f98.usb-1.5, full speed : USB Audio Playback: Status: Stop Interface 1 Altset 1 Format:

Re: [Alsa-user] New user with an ICUSBAUDIO7D

2020-07-20 Thread Alan Corey
When I do arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav It doesn't complain but the recording is silence. Something may be turned down or off in the mixer. Or I'm recording the wrong subdevice. hw:2,1 and hw:2,2 don't seem to be found. If I amplify (40 db) in Audac

Re: [Alsa-user] New user with an ICUSBAUDIO7D

2020-07-20 Thread chris hermansen
Alan and list, On Mon, Jul 20, 2020 at 9:45 AM Alan Corey wrote: > When I do > arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav > > It doesn't complain but the recording is silence. Something may be > turned down or off in the mixer. Or I'm recording the wrong > subde

Re: [Alsa-user] New user with an ICUSBAUDIO7D

2020-07-20 Thread Alan Corey
OK, arecord -f S16_LE --channels=2 --device="hw:2,0" --rate=44100 junk.wav does work. It's not pretty, I have to amplify in Audacity about 40 db. My coupling capacitor seems to be leaky, I see DC on the waveform and I get some motorboating. But I did it twice and both times worked. What I did f