[LAU] ArdourVST - Latency Management

[Lars Luthman]

On Tue, 2008-01-08 at 17:29 +0100, Sebastian Tschöpel wrote:
> Hello List,
> 
> I worked with a (jacklab) VST-capable Ardour version and some free VST - 
> plugins today and created some kind of a mic- channel strip with a 
> deesser, eq, compressor, reverb, etc. The problem is: When I bypass the 
> whole strip voice and music are perfectly synchronized. but when I turn 
> all the effects on I have a bad latency between the (effect-free) music 
> and the (channel-stripped) voice. When I use like 50 ladspa eq's, 
> limiter or whatever at the same time in the same channel the voice in on 
> time, so I assume that LADSPA plugins are either producing no latency 
> (which i cannot believe) or there is some kind of a latency management.
> 
> Is there something I can do about it (except delaying the other channels 
> which is basically not possible since the delay changes with the number 
> of effects)

LADSPA plugins report their latency, and Ardour compensates. Your VST
plugins probably don't report any latency.

Try inserting the "Artificial latency" plugin from the swh-plugins
package after the VSTs and tweak its latency. It doesn't modify the
signal in any way at all, it just pretends that it has a latency so that
Ardour will compensate for it.


--ll
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