[ardour-users] Tempo controled tremolo plugin

Chris Bozic cbozic at gmail.com
Tue Apr 26 08:38:25 PDT 2005

I would be willing to work on a plugin such as this but, although I'm
a software developer by trade, I have never developed a ladspa plugin
nor done any linux audio development.   This looks like a situation
where the work is already 90% done by some other developer.  I guess
I'll start by getting the LADSPA SDK and taking a look at the source
for some existing tremolo plugins.  When I get some time, I'll contact
those plugin developers and see if they would like to help out. 
There's obviously more qualified developers than I to work on
something like this so I'd appreciate any help or advice.


On 4/26/05, Paul Davis <paul at linuxaudiosystems.com> wrote:
> >Does anyone know if there is a tremolo plugin that will determine its
> >speed based on a tempo (preferably the BPM setting in ardour)?
> LADSPA contains no mechanism to relay tempo information to the plugin.
> i would be willing to work with any LADSPA plugins on a hack similar
> to the one we adopted for relaying latency values *from* plugins. if
> the plugin has a port called "tempo", we could write the current tempo
> in BPM (more in a second) to the plugin at the start of every
> process() cycle.
> however, you have to define BPM as well. the simplest definition is
> quarter notes (crotchets to my fellow brits) per minute.
> there could be errors around the tempo changes, however, until a
> slicker implementation came along.
> --p

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