[LAU] qtractor questions

Rui Nuno Capela rncbc at rncbc.org
Mon Mar 22 14:50:12 EDT 2010

On 03/22/2010 10:07 AM, rosea grammostola wrote:
> Some questions about qtractor:
>     * You can't render the midi track to wav? How do you get an whole
>       session into an audio file?

midi is meant to be rendered by a sound generator module, a synth, a
sampler, a stand-alone or an instrument plugin (dssi, vsti or lv2); you
can drive external midi outboard equipment as well, which in fact was
and still is the primordial goal of a midi sequencer like qtractor.

qtractor does not include/integrate any midi sound generator per se, so
you cannot render midi tracks directly to audio files. but you can
record/bound the sound modules output back into qtractor, ardour or any
other jack enabled hard-disk recorder if you prefer.

qtractor exports audio tracks as audio files; similarly it exports midi
tracks as standard midi files, nothing else ;)

>     * Why are there no new audio tracks showing up in Jack when you add
>       a new audio track, like ardour has? Wouldn't this make it more
>       easy to use it with other apps (for example ardour)?

qtractor is not ardour (tm) -- internal signal flow models are not the
same, not even close ;)

re. qtractor, each "input bus" feeds a track on recording; each track
feeds an "output bus" for mixdown/merging on playback; it is these "bus"
devices that are exposed as jack audio ports or alsa-seq ports (midi)
from or to the outside world.

again, buses in qtractor are not the same as buses in ardour. in
qtractor, buses are what you ever see in the jack graph. you never see
tracks ;)

> So far so good... all though apps like non-sequencer and epichord have a
> point when they talk about the disadvantages in workflow if you have to
> open a new windows to edit midi imho...

you'll have to open something haven't you? qtractor lets you edit midi
clips as if you were editing a midi file in a stand-alone window; if you
look closer you can have one of these windows open for each and every
midi clip you have in session.

rncbc aka Rui Nuno Capela
rncbc at rncbc.org

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