[Ardour-Dev] Loud crackling noise caused by plugins

Dominic Sacré dominic.sacre at gmx.de
Mon Jul 7 10:42:32 PDT 2008

On Monday 07 July 2008 18:27:02 Raphaël Doursenaud wrote:
> > I'm working on a project with about 20 tracks, each using various
> > LADSPA plugins. On some tracks, I'm getting a short but loud noise,
> > that seems to be caused by some of the plugins (so far I've identified
> > TAP EQ, TAP Reverb, CMT Echo Delay Line, I'm sure there are others).
> >
> > The weird thing is that this always happens at the same position in the
> > project, and it happens on all of the tracks at once.
> >
> > The content of the tracks doesn't seem to matter, even an empty track
> > will exhibit this problem, if it uses one of the plugins mentioned
> > above.
> >
> > Any idea what could be causing this?
> I've also experienced this problem on some projects but haven't been
> able to find the cause. The only way I've found to set it clean is to
> remove *all* the plugins.
> I think we need to fill a bug report. I don't have the time right now
> but I'll put this on my todo list!

After some further investigation, it seems like my problem is somehow caused 
by the loop range marker (although I'm using normal playback mode, no 

There's already a bug report about what I believe is the same issue:

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