[LAU] ArdourVST - Latency Management

Paul Davis paul at linuxaudiosystems.com
Thu Jan 10 12:26:59 EST 2008

On Thu, 2008-01-10 at 16:37 +0100, Sebastian wrote:
> > Hello List,
> > Hello JackLab Team,
> > 
> > I tried some things today concerning this latency issue. To sum up:
> > 
> > There wasn't any problem with the plugins itself. As I said, I tried a 
> > lot of them and the problem appeared anyway. I didn't try it on my 
> > "music-machine" but on my laptop I worked with two different ArdourVST 
> > versions today.
> > 
> > First build: http://wiki.jacklab.net/index.php/Ardour_with_VST
> > The second one made by following this manual: 
> > http://ardour.org/building_vst_support
> > 
> > Well, it worked with the second build so I assume it has something to do 
> > with the Jacklab build. I'm going to try it on my "music-machine" later 
> > today and will tell you about my experiences.
> Okay. I tried it on my music machine but found another totally different 
> result. The latency of VST plugins gets compensated on tracks, but not 
> on busses.

ardour doesn't do latency compensation for busses. maybe it should.
there is an implementation between:

  1) compensate by delaying playback onset of disk material
  2) compensate by using delay buffers

they each have their own plusses and minuses. right now, ardour uses
(1), and since busses have no disk material, they cannot be compensated.

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