[PD] problem with mixer project
fgadea at gmail.com
Sat May 7 12:58:55 CEST 2011
> Re: [PD] problem with mixer project
> IOhannes m zmölnig <zmoelnig at iem.at>
> Sat, 07 May 2011 11:33:03 +0200
> pd-list at iem.at
> pd-list at iem.at
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> On 05/06/2011 08:45 PM, Fernando Gadea wrote:
>> Hi list!
>> If I move any slider in my controller to raise the volume of any
>> channel, it works perfectly well, but if I move the master level the
>> latency starts to get crazy and the resulting values come really slowly,
> Pd is designed to have a constant latency.
> so Pd's (and the system's) latency will never when moving a slider
> (well, unless you control a delay with the slider or do some other
> explicit latency fuddling, but that's a different story)
> or maybe you are referring to GUI latency? e.g the slider starts to
> visually respond very slowly (it seems like in CM-talk, "latency" mostly
> refers to audio latency).
> without having looked at your patch, a good chance is that you have
> created some control feedback.
Reading my mail I realized that I did not explain it all: the latency
problem starts when the dac~ is computing audio. As you can see in the
mixer, when I rise the master volume audio computation starts, meanwhile
if I set master volume to zero it ends. It is while computing audio that
the latency problem exists, so I guess the control side is not the
problem (am I in the right logic?) Nevertheless I have done what I
believe is an extensive control check in my patch, before and after
finding that deleting the mixer channels the problem ended. After that I
did another control check on the mixer part of the patch and found no
control feedback (my checks are visual, following line after line, so,
as human, I might be wrong, but I cannot find my error if I did one).
It seems that the latency is present not only in GUI. I send the values
to a symbol in the main patch to see what I am doing, so I am preety
sure I also hear the audio consecuences with the same latency (the audio
rises just when the mixer volume rises, about a second after moving the
slider if dac~ is on).
Anyway, I will look for some other posibilities of control feedback.
Thank you for your advice
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