Forums > MaxMSP

VST params command and parameter output somehow blocked

May 22, 2006 | 2:07 pm

I have a very strange behaviour of vst~, I load a (pluggo) plugin, and
want to retrieve parameters. For test purposes I even have attached a
print directly to the fourth outlet. When sending get xx command I do
get the expected output, but the command params doesn’t put anything
out. The strange thing is, it sometimes works and sometimes not! Very

Is there some known state where vst~ does not put out parameters? If I
ask with "get 1" it will output, if I move a slider in the vst window it
does not, if I send "params" it does not.

I need it to work.

The vst~ is inside a poly by the way.

I just found the way to track it down:

#P window setfont "Sans Serif" 9.;
#P window linecount 1;
#P newex 85 115 118 196617 poly~ 2;
#P window clipboard copytext "poly~ 2" #E;
#P window clipboard copycount 1;

open the vst~ then choose a plugin, open the plugin window and move a
control: no output from output 4 which should be visible in the help
file window.
This works if the number of voices is 1, but doesn’t work for more voices.

Expected result: it has to work for any number of voices.

(I would load different VST’s into the different voices by the way…)


Stefan Tiedje————x——-
–(_|_ —-|—–|—–()——-
— _|_)—-|—–()————–

May 22, 2006 | 2:50 pm

not quite true

if i open (message open 1) the 1st instance of poly, load a plug-in
and move controls – it does not work
but if i also open teh second instance of poly, choose a different
(or the same) plug-in now each of them reports the params changes

works with pluggo and with other plug-ins



Kasper T. Toeplitz
noise, composition, bass, computer

May 22, 2006 | 3:32 pm

Thanks, so the bug isn’t as bad as I thought, its not initialized
correctly, I need to open and close the window of two instances… bizarre.

Should be corrected, I don’t want to open windows just for an


Stefan Tiedje————x——-
–(_|_ —-|—–|—–()——-
— _|_)—-|—–()————–

May 22, 2006 | 3:56 pm

can’t you load the plug-ins by any other way???? I mean before you
use it you’ll have to tell you instancies of vst~’s which plug-ins to
load (by some message) – i did not try it, but that should be enough..

of course i don’t know, but it does not seem to be a bug to me – if
you laod a vst~ with no argument, sure it says it loads a "gain"
thing, but maybe this is not a real plug, and the vst still waits to
be "completed" to work…

just guessing – but no one will use a vst~ just for gain…. (or maybe yes)


May 22, 2006 | 9:56 pm

when your pluggo s parameters only initialise
correctly when the window is opened, then maybe
you should change that before you try to host
it differently?

(or try recaling preset # 1 – maybe that is enough.
but as you know, the patch has no possibilty to know
when the loading has finished.)

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Forums > MaxMSP