Re: JACK configuration
On 01/16/2011 11:15 AM, Robert Blair Mason Jr. wrote:
> Hi all,
>
> I am attempting to record audio on my laptop. To this end, i've installed Ardour/JACK. I have *finally* managed to get ALSA to work. However, I now have a problem - the sound that is wired into the Mic In jack on the front of the laptop will play back (so basically my laptop is functioning as a speaker), but I can't seem to figure out how to get JACK to connect. Can anyone help me configure JACK so that the input will go to Ardour? The connection graph shows that system:capture1 and system:capture2 are wired to go to Ardour:Audio In 1 and Ardour:Audio In 2, respectively (so it seems like this should work). However, when the Ardour is prepped for record, the volume bars that indicate input volume are relatively static, while I can hear sound being played back. After recording, the track is silent.
>
> Portions of the output of amixer that look relevant:
>
<<--deleted-->>
I'm not sure the ALSA settings are relevant, because ...
> Any help would be much appreciated.
>
Please note, this is by memory and it's been a while, I would need a
little time to be able to verify my sound system setup. With that caveat:
First, to confirm that you have in fact set up to record:
1. IIRC, Ardour by default only has things set up for a pass through
type of operation, which matches what you've described. Again, IIRC,
you will need to create a "recording track" and connect it between the
master out and master in channels.
I will verify exactly what I have set up as soon as I can and let you
know the various settings.
2. If you believe things should be working because you've made
connections, it may be you haven't gotten things correctly "armed". In
the main window, in the controls section for the track you intend to
record on, there is a small round icon, which must be selected to arm
the track.
In the top section, there is also a round icon in a button (a bit larger
than the one mentioned above ;), to the right of the playback button.
You must select it next.
Then, select the playback button to start processing. If everything is
working, you should now see a light colored "ribbon" being created
across the screen for the recording track only, and there should be two
lines (assuming stereo input), inside the ribbon. If volumes are high
enough, the lines should show amplitude variations.
--
Bob McGowan
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