It can record from all 4. Although many applications only care about left / channel 1 (defaults). I tend to run pulseaudio over jackd setup. As that was the only way to have your mic be an input other than 1 for apps like skype. Since channel 1 and 2 are typically stereo output. $ man arecord -c, --channels=# the number of channels. The default is one channel. ..... I suspect that adding -c 4 would overcome the issue. The -f dat has a default of -f S16_LE -c 2 -r 48000. So you might want to change that parameter as well. $ arecord -Dhw:1 -f S24_LE -t wav -c 4 -r 96000 output.wav I have that card, although I haven't booted that old PCI system in a while. What I recall of that card, that should be the highest sampling available for it. 24 bit, 96kHz, 4 channels (input). In theory it has a 10 channel output mixer. It's a nice card, a shame most newer things don't have PCI in favor of PCIe. You might want to simplify your .asoundrc, it's more likely to get in the way than help these days. #----- defaults.ctl.card 1 defaults.pcm.card 1 defaults.pcm.device 0 #----- Assuming that it didn't get index 0 in /proc/asound/cards. But did get 1. In alsa speak that's equivalent to -Dhw:1,0 . Although you might want to omit the ,0 since that's typcially playback, not capture, so -Dhw:1 - James On 12/4/16, Ralf Mardorf <ralf.mardorf@xxxxxxxxxxxxx> wrote: > On Sun, 4 Dec 2016 20:18:24 +0000, zcx wrote: >>I have a Delta 44 sound card here that uses the ice1712 chipset. >> >>Am I right in thinking that although the card has 4 mono inputs, it >>can only capture one stream at a time? arecord seems to think so... > > Only one app can grab the device, if you run two instances of the same > app, only one instance can grab the device. > > If several apps should be able to use the device at the same time, you > need a workaround, e.g. dmix or e.g. a sound server, such as e.g. jackd. > > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, SlashDot.org! http://sdm.link/slashdot > _______________________________________________ > Alsa-user mailing list > Alsa-user@xxxxxxxxxxxxxxxxxxxxx > https://lists.sourceforge.net/lists/listinfo/alsa-user > ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
