line-in input doesn't record

line-in input doesn't record

[Bryan Bolden]

hello all!!  I am trying to begin recording/sampling of voice coming in
from my line-in jack.  I have a tape recorder connected (through the tape
recorder' s earphone jack) to the line-in of my sound card (is that right).
 now when I press play on the tape I do hear the voices on tape through my
external spekers but when I test the recording with :

dd if=/dev/audio of=/tmp/audio_test
and then:
cat /tmp/audio_test >/dev/dsp

all I hear is the sound from the mic input.  I have adjusted the line-input
sound level through a mixer at a higher leven that the mic's level but I
don't hear anything from the sampled audio from the tape despite hearing it
from my external speakers.  any suggestions?

thanks!

Re: line-in input doesn't record

[Dave Mielke]

[quoted lines by Bryan Bolden on February 15, 2000, at 13:09]

>I have a tape recorder connected (through the tape
>recorder' s earphone jack) to the line-in of my sound card (is that right).
> now when I press play on the tape I do hear the voices on tape through my
>external spekers but when I test the recording 

If you do "aumix -q", you'll notice a "P" beside your current line-in setting.
This means that you can play, but that you cannot record, via that input. You
need to switch this "P" to "R", which means that you can both play and record
via the input. To do this, use a command like "aumix -i R".

-- 
Dave Mielke           | 856 Grenon Avenue | I believe that the Bible is the
Phone: 1-613-726-0014 | Ottawa, Ontario   | Word of God. Please contact me
EMail: dave@mielke.cc | Canada  K2B 6G3   | if you're concerned about Hell.

Re: line-in input doesn't record

[Paco]

On Tue, 15 Feb 2000, Bryan Bolden wrote:

> hello all!!  I am trying to begin recording/sampling of voice coming in
> from my line-in jack.  I have a tape recorder connected (through the tape
> recorder' s earphone jack) to the line-in of my sound card (is that right).

Well... if the tape recorder has a line-out you should really use that
instead, but the headphone output will work as well.  Just make sure you
don't turn up the volume on the tape recorder too much... it'll overload
the soundcard input and you'll get distorted data.

>  now when I press play on the tape I do hear the voices on tape through my
> external spekers but when I test the recording with :
> 
> dd if=/dev/audio of=/tmp/audio_test
> and then:
> cat /tmp/audio_test >/dev/dsp
> 
> all I hear is the sound from the mic input.  I have adjusted the line-input
> sound level through a mixer at a higher leven that the mic's level but I
> don't hear anything from the sampled audio from the tape despite hearing it
> from my external speakers.  any suggestions?

Using your mixer application, switch the "RECORDING SOURCE" from MIC to
LINE-IN.  Then you should hear the tape recorder input and not the
microphone input in the final recording.  (If you're trying to record from
both the mic and the line-in, you can't do it at the same time.)

regards,
Paco

Re: line-in input doesn't record

[Dave Mielke]

[quoted lines by Paco on February 15, 2000, at 11:45]

>(If you're trying to record from
>both the mic and the line-in, you can't do it at the same time.)

Yes you can, although many a mixer application don't allow it. Linux does
support multiple recording sourcs. If you stick with something as simple as
aumix, you can do it just fine.

-- 
Dave Mielke           | 856 Grenon Avenue | I believe that the Bible is the
Phone: 1-613-726-0014 | Ottawa, Ontario   | Word of God. Please contact me
EMail: dave@mielke.cc | Canada  K2B 6G3   | if you're concerned about Hell.