15 Nov
2014
15 Nov
'14
9:04 p.m.
On 2014-11-15 04:56, Rui Nuno Capela wrote:
Ah, MIDI only (I was thinking instruments => audio at fader point).
Seems an odd choice to not have an audio fader on a track with
instruments though, if I understand the situation correctly. You won't
be able to control the overall volume sometimes...
Anyway, that's a Qtractor thing. With respect to plugins, I agree just
acting like any other MIDI box is the correct thing to do, unless
there's a good reason otherwise, which I don't see here.
A designated volume port would allow hosts to control plugins similarly
*not* via MIDI, wherever that's useful. We currently have a gain
designation, but no volume. I guess "volume" would be normalized
0=silence 1=no attenuation.
--
dr
On 11/15/2014 05:55 AM, David Robillard wrote:
Since the host would have to support such a thing anyway, it might as
well just support MIDI channel filtering/assignment/etc itself. No
sense adding a bunch of LV2-specific work for everyone when nothing else
works that way.
It's not technologically a big deal to add such a thing (purely
metadata, no API needed), but I don't see anybody actually using it.
Given the choice, pushing complexity into the plugins is a bad idea anyway.
On 2014-10-16 11:42, Phil CM wrote:
qtractor ensures that the plugin only receives MIDI messages that are
"stamped" with the proper MIDI track assigned channel.
otoh. i guess the so called "MIDI channels control port" may only make
sense to stand-alone cases or for plugin instances that may act like so
(eg. when using jalv). Is there a way to retrieve this info (and others,
ideally) from the
host, thus removing the need for a "midi channel" control port?
It would be simple for the host to send a message describing this or
whatever other information, but I don't really see the point.
... the fader
in a DAW typically does its own thing with the signal at
that point, and wouldn't be mapped to a plugin volume anyway. Since
there can be many plugins in a strip, this doesn't really make sense.
It sounds like your plugins are post-fader, which is not what you want,
but I don't know Qtractor.
the faders in qtractor MIDI tracks/buses strips are indeed special MIDI
controls. eg. for MIDI tracks the volume fader/slider is tied to MIDI
CC#7 (GM channel volume). these MIDI channel messages are indeed sent
through the MIDI plugin chain. nb. that in qtractor you can have more
than just one MIDI intrument plugin inserted in a MIDI track/bus.
in this MIDI control model, *it is* the plugin's resposability to comply
with the GM spec (or not), either by implementation or its own
configuration option. like it has been for all external or stand-alone
MIDI equipment be that soft- or hard-synths, etc.
remember, plugins aren't the only form of MIDI instruments thatat exist,
and qtractor still is a *sequencer* designed to drive all other forms.
also, in this sense, all MIDI strip plugin chains are regarded as if
it's "pre-fader" if one looks at it as in the audio signal sense, but
let me refrain that it is dealing with MIDI control flow and *not* with
the audio one, so calling it pre- or post-fader isn't actually
applicable to MIDI tracks/buses.