[linux-audio-user] Command-line app to run LADSPA plugins?

[Adam Sampson]

Ken Restivo <ken at restivo.org> writes:

> I'm looking for a simple command-line daemon to run a processing
> chain of LADSPA effects.

You're probably after ecasound:

ecasound \
         -i jack_auto -o jack_auto \
         -el:fbdelay_5s,0.5,0.2,0.5 \
         -el:freeverb3,0,0.12,0.05,0.1,0.5,0.9

By default that'll connect itself to alsa_pcm for input and output; if
you want to automatically connect to a different host's ports, you can
say something like "-i jack_auto,fluidsynth".

The numeric parameters after the plugin name are in the same order
that JACK Rack shows them in, so you can test your effects chain in
JACK Rack then fairly straightforwardly translate it to an ecasound
invocation. (Actually, perhaps JACK Rack should be able to give you an
ecasound command line, or should come with a tool to run a saved rack
with ecasound... that one's going on the projects list.)

-- 
Adam Sampson <ats at offog.org>                         <http://offog.org/>