27 Jan
2014
27 Jan
'14
9:48 p.m.
Hi,
I have played around with petri-foo the first time, and I am thinking
about switching from specimen to it.
Is there a utility to convert specimen banks to petri-foo banks? As far
as I can tell, it is a simple XML transformation, and I would try that,
if such a utility does not exist.
Thanks,
Thomas
--
"Ich komme aus dem Staunen nicht heraus."
"Dann bleib halt drin, du Seppel"
(Dietmar Dath - Die Abschaffung der Arten)
http://www.residuum.org/
28 Jan
28 Jan
12:27 a.m.
On Mon, 27 Jan 2014 21:48:29 +0100
Thomas Mayer <thomas(a)residuum.org> wrote:
Hi,
I have played around with petri-foo the first time, and I am thinking
about switching from specimen to it.
Is there a utility to convert specimen banks to petri-foo banks? As
far as I can tell, it is a simple XML transformation, and I would try
that, if such a utility does not exist.
No there isn't any utility.
I haven't worked on Petri-Foo for some time so can't remember exactly
how it differs... You may run into problems converting, give me a
shout...
James.
Thanks,
Thomas
12:41 a.m.
Hi,
On 28.01.2014 00:26, James Morris wrote:
On Mon, 27 Jan 2014 21:48:29 +0100
Thomas Mayer <thomas(a)residuum.org> wrote:
I have just had a look at the XML formats, and I think, that most
properties can be converted with XSL, and additional parameters in
petri-foo should be possible to set to sensible defaults.
I'll start a Github project "when I have time"(TM).
Thomas
--
"Theoretically, [the amount of money in circulation] is watched
carefully by clever, serious economists. In practice, all the world's
money is one big swirling, whirling pool." (Cory Doctorow - For The Win)
http://www.residuum.org/
Hi,
I have played around with petri-foo the first time, and I am thinking
about switching from specimen to it.
Is there a utility to convert specimen banks to petri-foo banks? As
far as I can tell, it is a simple XML transformation, and I would try
that, if such a utility does not exist.
No there isn't any utility.
I haven't worked on Petri-Foo for some time so can't remember exactly
how it differs... You may run into problems converting, give me a
shout...
11:48 p.m.
Hi,
On 28.01.2014 00:26, James Morris wrote:
On Mon, 27 Jan 2014 21:48:29 +0100
Thomas Mayer <thomas(a)residuum.org> wrote:
I have just started a Github repo:
https://github.com/residuum/specimen2petri-foo
This is just an XSL for use with a transform tool like xsltproc.
Currently, only a small portion of the banks are transformed, but I
wanted to share it anyway.
Thanks,
Thomas
--
"Spielen Sie Strip Schnipp-Schnapp?" (Adam Weishaupt to Johann
Wolfgang von Goethe in: Robert Shea & Robert A. Wilson, The Golden
Apple)
http://www.residuum.org/
Hi,
I have played around with petri-foo the first time, and I am thinking
about switching from specimen to it.
Is there a utility to convert specimen banks to petri-foo banks? As
far as I can tell, it is a simple XML transformation, and I would try
that, if such a utility does not exist.
No there isn't any utility.
I haven't worked on Petri-Foo for some time so can't remember exactly
how it differs... You may run into problems converting, give me a
shout... 
29 Jan
29 Jan
2:34 a.m.
New subject: Rate of change damping in digital mixer controls
Hi list,
It's been reported that rapidly tweaking a MIDI control
connected to an Ecasound volume effect causes a click. I
tried sending various volume change commands, and could hear
a click for even 3 dB steps,
If I understand correctly, this click is the consequence of
an unfiltered step in the waveform that carries a lot of
harmonics.
So I'm wondering how digital mixers and DAWs deal with this.
Do they provide rate-of-change damping just for pan and
volume faders, or perhaps some generalized rate damping on
all parameters?
Do special plugins provide this damping, or a filter
on the MIDI/OSC inputs?
Thanks for any enlightenment on this subject.
Regards,
Joel
--
Joel Roth
3:44 a.m.
New subject: Rate of change damping in digital mixer controls
On Tue, Jan 28, 2014 at 03:34:39PM -1000, Joel Roth wrote:
If I understand correctly, this click is the
consequence of
an unfiltered step in the waveform that carries a lot of
harmonics.
So I'm wondering how digital mixers and DAWs deal with this.
Do they provide rate-of-change damping just for pan and
volume faders, or perhaps some generalized rate damping on
all parameters?
A pro-quality digital mixer will be designed to avoid clicks
and zipper noise on all controls. Even on/off functions will
be replaced by short fades.
All plugins should internally smooth their parameters when
a step change would generate artefacts and these would be
unexpected for that type of plugin. There is no such thing
as 'generalised rate damping'. It has to be done by the
plugin code and not by the host because
1. only the plugin (or rather its author) knows what is required
(it depends on both the function and the actual algorithm),
2. expecting a plugin to use already smoothed parameters (which
would have to be audio rate) can make them very inefficient.
As an example of [2], calculating the actual filter coefficients
corresponding to the user parameters typically requires much more
complicated calculations than the real filter algorithm. So any
interpolation is done on the internal filter coefficients instead
of the user parameters. In some cases doing that requires the user
parameters to be rate-limited first.
Ciao,
--
FA
A world of exhaustive, reliable metadata would be an utopia.
It's also a pipe-dream, founded on self-delusion, nerd hubris
and hysterically inflated market opportunities. (Cory Doctorow)
6:09 a.m.
New subject: Rate of change damping in digital mixer controls
On Wed, Jan 29, 2014 at 02:44:18AM +0000, Fons Adriaensen wrote:
All plugins should internally smooth their parameters
when
a step change would generate artefacts and these would be
unexpected for that type of plugin.
Thanks, Fons, for explaining this. Are you (or anyone on the
list) aware of LADSPA plugins for amplifier and pan effects
that provide this smoothing behavior? It would be great if
the effects could behave well when hit by a burst of
commands from the movement of a MIDI control knob.
Regards,
Joel
--
Joel Roth
3984
days inactive
3986
days old
linux-audio-dev@lists.linuxaudio.org
6 comments
4 participants
participants (4)
-
Fons Adriaensen -
James Morris -
Joel Roth -
Thomas Mayer