clanging sound when recording from line-in

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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.

During the recording, when i directly hear the music, it seems to be ok.
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.

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.

Where might the reason be?

Thanks in advance

Werner
-- 
Werner Arnhold
Tel.: 030-74 22 555
Mobil: 0163-15 84 374
warnhold@xxxxxxxxxxxxxxxxxx


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