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

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To: <jeremy@...>
Cc: <linux-audio-dev@...>
Date: Thursday, July 15, 2010 - 12:22 pm

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On Thu, Jul 15, 2010 at 4:16 PM, Jeremy wrote:

> Louigi Verona wrote:

Ah, this could be the reason. I will recheck carefully. I think I tried
routing only one but I am not sure.

>

LADSPA vocoder in JACK Rack has the same problem. Being already pretty
experienced in this regard (hehehe) I can say that this is because of an
effect which I forgot how is called when the plugin stops receiving the
signal but continues to try to process data and starts going into
calculations of really small numbers and it triggers a software part of your
CPU and it uses a lot of resources, these calculations. The developer should
find a way to fix this somehow.

> Best,

Thx Jeremy )

--
Louigi Verona
http://www.louigiverona.ru/

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On Thu, Jul 15, 2010 at 4:16 PM, Jeremy =
<autostatic@gm=
ail.com
> wrote:
Louigi Verona wrote:

Okay, last message for today.

Eventually I could partially reproduce. If I create a stereo Vocoder track =
FIRST, then the latter mono carrier and modifier tracks would channel into =
Vocoder provided I press "monitor" on it. But the output is a wei=
rd mix of vocoded signal and the modifier. If I change modifier and carrier=
places - the signal does not change. Why would track creation matter I do =
not know. Rui?

The reason why you get a mixed signal could be because you use both outputs=
of the Vocoder track. The vocoder LADSPA plugin outputs the dry signal on =
the second output and the vocoded signal on the first output. That's wh=
y I connected the first output of the Vocoder track to both inputs of the V=
ocoder Mix track, like this you have faux-stereo and better control over th=
e output of the Vocoder track.
Ah, this could be the reason. I will re=
check carefully. I think I tried routing only one but I am not sure.=A0

Also, when Vocoder does not receive anything, it starts to generate XRUNs, =
so if you close Qtractor while Vocoder is activated, Qtractor will freeze.<=
br>

The more bands you select in the vocoder LADSPA plugin, the more CPU it tak=
es, so bigger chance for xruns. I didn't thoroughly test this setup yet=
so it might be something else.
LADSPA vocoder in JACK Rack has the s=
ame problem. Being already pretty experienced in this regard (hehehe) I can=
say that this is because of an effect which I forgot how is called when th=
e plugin stops receiving the signal but continues to try to process data an=
d starts going into calculations of really small numbers and it triggers a =
software part of your CPU and it uses a lot of resources, these calculation=
s. The developer should find a way to fix this somehow.
=A0
Best,

Jeremy
_______________________________________________
Linux-audio-dev mailing list
L=
inux-audio-dev@lists.linuxaudio.org

http://lists.linuxaudio.org/listinfo/linux-audio-dev
Thx Jeremy )--=
Louigi Veronahttp://www.lo=
uigiverona.ru/

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Messages in current thread:
[LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 7:49 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:32 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:50 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 12:55 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 5:26 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 6:27 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 12:22 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Harry Van Haaren, (Thu Jul 15, 5:23 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), James Morris, (Thu Jul 15, 5:32 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Harry Van Haaren, (Thu Jul 15, 5:39 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 5:49 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Fri Jul 23, 11:12 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Mon Jul 12, 8:30 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Mon Jul 12, 10:37 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 8:35 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 12:07 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 3:08 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Mon Jul 12, 12:05 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Thu Jul 15, 11:59 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Wed Jul 7, 1:15 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Rui Nuno Capela, (Wed Jul 7, 6:38 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:40 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:46 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 6:49 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 7:01 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 5:41 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 5:46 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 2:40 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:52 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 8:05 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:08 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 8:15 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 8:07 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:06 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:12 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:24 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:25 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Natanael Olaiz, (Wed Jul 7, 9:38 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 9:54 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 10:59 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Jeremy Jongepier, (Wed Jul 7, 12:37 pm)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 11:00 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:15 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:18 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:18 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Louigi Verona, (Wed Jul 7, 9:19 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 9:25 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:11 am)
Re: [LAD] Routing signals in mixer (Ardour, Qtractor), Ralf Mardorf, (Wed Jul 7, 8:03 am)