10 Feb
2011
10 Feb
'11
3:54 a.m.
Hello everyone1
I'm trying my luck with Fons Adriaensons blvco oscillator LADSPA plugin and
have come up against more than one problem. I'm using it in csound and I can't
get anything but a steady tone at 440Hz. The only control which has wokred yet
is the octave control (control port 0).
So can anyone help me a little here? Has anyone probably used this plugin
with csound before? Or can someone give me a helpful hint or two about it?
I've tried for hours, but nothing going...
Kind regards
Julien
--------
Music was my first love and it will be my last (John Miles)
======== FIND MY WEB-PROJECT AT: ========
http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: =======
http://www.juliencoder.de
10 Feb
10 Feb
10:08 a.m.
On Thu, Feb 10, 2011 at 03:54:13AM +0100, Julien Claassen wrote:
Hello everyone1
I'm trying my luck with Fons Adriaensons blvco oscillator LADSPA plugin
and have come up against more than one problem. I'm using it in csound
and I can't get anything but a steady tone at 440Hz. The only control
which has wokred yet is the octave control (control port 0).
So can anyone help me a little here? Has anyone probably used this
plugin with csound before? Or can someone give me a helpful hint or two
about it? I've tried for hours, but nothing going...
IIRC, those oscs are 1V/octave, like the old analog synths. Whereas, many of the other
oscs want some kind of linear signal. I don't remember the details though. They work
fine in AMS. I vaguely remember there being a LADPSA plugin somewhere that converts from
non-1V/octave to 1V/octave too. Might want to try that.
-ken
11:42 a.m.
Hello!
Ken, thanks for the answer. OK, so the question is - in csound - what would
I set the audio input port "frequency" to? Would I set it to 1, to get
something sensible? Would I use an oscillator at some frequency as input?
there are the other audio rate inputs called exp fm, lin fm and sync. Setting
sync to something, whilst exp fm and lin fm are 0 isn't a nice thing. :-) I
can be certan of that situation. I get a very, very lowfrequ sound. :-)
Sorry, to be so thick, but I never worked with LADSPA plugins as bits of a
synthesizer and haven't seen typical usage of them.
Kindly yours
Julien
--------
Music was my first love and it will be my last (John Miles)
======== FIND MY WEB-PROJECT AT: ========
http://ltsb.sourceforge.net
the Linux TextBased Studio guide
======= AND MY PERSONAL PAGES AT: =======
http://www.juliencoder.de
7:29 p.m.
On Thu, Feb 10, 2011 at 11:42:57AM +0100, Julien Claassen wrote:
Hello!
Ken, thanks for the answer. OK, so the question is - in csound - what
would I set the audio input port "frequency" to? Would I set it to 1, to
get something sensible? Would I use an oscillator at some frequency as
input? there are the other audio rate inputs called exp fm, lin fm and
sync. Setting sync to something, whilst exp fm and lin fm are 0 isn't a
nice thing. :-) I can be certan of that situation. I get a very, very
lowfrequ sound. :-)
Sorry, to be so thick, but I never worked with LADSPA plugins as bits
of a synthesizer and haven't seen typical usage of them.
I don't know Csound. If you have access to LADSPA plugins from Csound, maybe
instantiate the LADSPA plugin that converts linear to 1V/octave, and feed the output of
that into the blvco.
I vaguely remember seeing an example of how to do this in Ingen or some other modular
synth, but it's been years and my memory seems to be getting worse every year.
-ken
5037
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linux-audio-user@lists.linuxaudio.org
3 comments
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participants (2)
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Julien Claassen -
Ken Restivo