Recording on SB Live line-in

[Charles Hallenbeck]

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John,

The mike is a monaural device. So no matter how you cable it, you only 
can capture one channel.

The volume setting of the line device is only half of the story. You 
also need to set capture on, and choose a capture level as well. Not 
sure of aumix, but amixer lets you do that. You could actually record 
the line device with its playback gain set to zero, as long as the 
capture setting was turned on and the capture gain was adequate. 

Chuck


On Tue, Apr 18, 2006 at 05:32:20PM -0500, John Heim wrote:
> I can't record the audio I hear when I plug my VCR or stereo into the 
> line-jack on my SB Live sound card. I can record if I plug it int the mic 
> jack but the quality isn't as good.  I've used aumix to set the level of 
> the line-in to 64 which sounds good. But recording with sox gives me 
> nothing but silence.  Ie:
> 
> $ aumix -l 64 -m 64
> $sox -t ossdsp /dev/dsp bogus.wav
> 
> That works if I have my VCR connected to the mic although the quality is 
> poor.  Can I tell it to record from the line-in but not from the mic? Maybe 
> aumix isn't the best tool to use.
> 
> Alternately, maybe I could get the mic to work...  The problem with the mic 
> jack is that I get only the left or the right channel. I have a cable with 
> 2 RCA jacks on one end and a stereo jack on the other. The 2 RCA jacks are 
> plugged into the line-out on the VCR, left and right. The stereo jack is 
> plugged into the mic on the sound card. Only 1 of the RCA jacks matter. The 
> other I might as well leave dangling because I don't hear that channel no 
> matter what.  I can get the left channel on the VCR if i plug the jack that 
> works into the left line-out jack on the VCR or I can get the right channel 
> by plugging it into the right line-out jack.  So the mic is acting as if 
> there's a stereo-mono converter in there somewhere.
> 
> I know the cable is good because:
> 1. I can hear both channels if I plug it into the line-in on the soundcard. 
> But as I explained above, then I can't record.
> 2. I have a second cable and that one does the same thing
> 3.  Both cables work fine with another sound card
> 
> 
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> Speakup at braille.uwo.ca
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- -- 
The Moon is Waning Gibbous (73% of Full)
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