Re: JACK configuration
On Mon, 17 Jan 2011 14:00:49 -0800
Bob McGowan <firstname.lastname@example.org> wrote:
> 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:
> 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
Thanks, I'm able to record now. Still working on getting ardour to play back,
but if worst comes to worst I can just export the wav and play it through VLC :)