warnhold@xxxxxxxxxxxxxxxxxx wrote: > Hi, > > I'm not quite sure if this is the right place to ask but I don't know a > better one: When recording from line input with audacity I get a totally > clanging result. Even at quiet places in the music I hear a low noise, > when magnifying I see a sawtooth-form wave of about 4000 Hz. Maybe someone else will have an idea of what this is. Any RF sources nearby? What happens if you use the beta version of audacity? > > During the recording, when i directly hear the music, it seems to be ok. Heard from the line source independently, or through the sound card? > When I do the recording at the same conditions using arecord from the > command line the result is ok too. This way is not very convenient because > one can judge the right pitch only afterwards. The fact that arecord works without issue indicates to me that this is not an ALSA issue. It is using alsa to get the audio it records. It probably isn't a sound card issue either. Or it might be a fluke when the actual source of the interference is inactive. > > I use Debian. With version 3 recording with Audacity was ok, using the > same hardware at Debian 4.0r3 and 4.0r4 gives this evil result. It's the > same when I use ReZound and another program I tried too. I don't get a connection between the kernel version and the issue. Do these use different versions of alsa? What happens if you use the latest driver and library from alsa? > > Where might the reason be? Good question! :-) Maybe someone more knowledgeable than me can answer it. > > Thanks in advance > > Werner ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
