[LAD] Routing signals in mixer (Ardour, Qtractor)

[Rui Nuno Capela]

On 07/07/2010 06:21 PM, Niels Mayer wrote:
> Is there a similar solution with Qtractor possible for audio plugins
> that output midi (e.g. audio->midi pitch detection as provided by
> 'autotalent'), or midi-controlled audio-processing plugins (again,
> such as autotalent). You mentioned this configuration wasn't possible
> before ( http://lalists.stanford.edu/lad/2010/05/0369.html
> http://lalists.stanford.edu/lad/2010/05/0372.html ) -- is that still
> the case?
> 
> It seems like the case solved by Jeremy was an "all audio" plugin
> setup with some extra side-chaining (e.g.
> http://www.soundonsound.com/sos/may09/articles/cubasetech_0509.htm#top
> ).
> 

exactly. qtractor has no means to host midi_fx plugins. even though a
vst and theoretically lv2 plugins may provide midi out ports, qtractor
won't recognize it and sure all midi output data will be thrown to
/dev/null ;)


> What if you want to use MIDI control as your "side chain" (
> http://www.soundonsound.com/sos/may01/articles/advancedgating.pt2.asp
> ) ? Instead of ducking one instrument based on the sound of the drum
> hits, one simply had a midi note-on/note-off during the hit. Or even
> better, a Note-on and an ADSR to control the length and amplitude of
> the "duck".... A good example of this would be using a fast on/off
> repeating "note" in midi to gate an existing signal -- to give that
> old school rave sound to synths (
> http://www.youtube.com/watch?v=RLjJlUH6eIA&annotation_id=annotation_180979&feature=iv
> ) or "stuttering" vocals ( http://www.youtube.com/watch?v=YnnDMvdVDz4
> ).

there was once this idiocy of mine which hinted you could drive a midi
audio_fx plugin by inserting it into a midi track (eg. a midi controlled
vocoder plugin) and preceding it by an audio insert.

that way you could have the plugin control data in the midi track (ie.
poor man's automation:). what could never work was that the audio input
signal, which you feed to the aforementioned audio insert returns,
couldn't ever be taken from one of qtractor's audio output buses.

because it just doesn't work, you just get silence instead. but it could
work iif the audio signal is piped in from anything alse but qtractor...

cheers
-- 
rncbc aka Rui Nuno Capela
rncbc at rncbc.org