>On Mon, 2006-06-19 at 12:33 -0400, Chris Fisichella wrote: >> We have a radio station. We use ALSA to bring in a balanced, stereo >> audio signal to ICES. Unfortunately, that stereo signal is reduced to >> mono. That is what we are broadcasting. We can't figure out for the >> life of us what is happening, so I have been digging around the >> various software components to determine the problem. Right now, >> things seem to be pointing to alsaplayer. I do not know it well >> enough to be sure, however. >> >> Is there a way to tell ALSA not to do that? >> > >I don't think your problem is related to the automatic mono->stereo >upmixing that the default device does. ALSA does not discard data like >that. > >Does "arecord -f cd file.wav" record a mono or stereo signal? > >What about "arecord -f cd | aplay"? > >Lee
Okay, I think this question I asked may be a bit premature. I am really trying to get an Echo Mia card working, but I have a SoundBlaster card to work with. I have not gotten the audio in to work yet on this SB card. I noticed a post on the devel list that this functionality was recently incorporated. I did not know exactly what revision of the driver it is included in, however. Is it in the HG tree? Which, is very timely, given your most recent request for a newbie HG doc. (I'll certainly use it.) So, I guess my first question is: Would this revision of the ALSA driver include the ca1060 (I think that is what it is called) driver that can handle sound input? I tried those commands, they recorded something. (Most likely digital silence.) They did say they were in stereo. I guess I need to get a hold of a stereo .wav file in the interim. There is a little short one in the /usr/share/sounds directory that I thought was also displaying this behavior. Get my sound card working? What do you think? All I really need to do is figure out why our signal is going to mono. -Chris _______________________________________________ Alsa-user mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/alsa-user
