Loud crackling noise caused by plugins

[Dominic Sacré]

Hi,

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?


Thanks,

Dominic
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[Raphaël Doursenaud]

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Dominic Sacré a écrit :

> Hi,
>
> 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?
>
>
> Thanks,
>
> Dominic
> _______________________________________________
> ardour-dev mailing list
> ardour-dev@...
> http://lists.ardour.org/listinfo.cgi/ardour-dev-ardour.org

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!

- --
Raphaël Doursenaud
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[Dominic Sacré]

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
looping).

There's already a bug report about what I believe is the same issue:
http://tracker.ardour.org/view.php?id=1685
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