Very simple question:
what is an object that can low pass filter floats (not ~)?
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
cheers, Martin
Martin . a écrit :
Very simple question:
what is an object that can low pass filter floats (not ~)?
iir, fir, median etc from the mapping lib.
cyrille
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
cheers, Martin
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another way to filter floats is to do: | [sig~] | [lop~][metro] | / [snapshot~] |
nick
On Oct 8, 2008, at 2:15 PM, cyrille henry wrote:
Martin . a écrit :
Very simple question:
what is an object that can low pass filter floats (not ~)?
iir, fir, median etc from the mapping lib.
cyrille
is there a searchable database on pd objects? googling only found
this http://en.flossmanuals.net/PureData/ListofObjectscheers, Martin
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[inlet] | [* X] | [+ ]X[* Y] | [outlet]
and make sure, that X + Y = 1 and bothe are < 1 and > 0.
roman
On Wed, 2008-10-08 at 13:08 +0200, Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
cheers, Martin
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Hello all, hello Roman,
I try your method with X+Y=1 and 0<X<1 and 0<Y<1
and your description for the patch.
So i get this patch. It seems that i get strange result, no ? Or i
miss something ?
++
Jack
Le 8 oct. 08 à 15:58, Roman Haefeli a écrit :
[inlet] | [* X] | [+ ]X[* Y] | [outlet]
and make sure, that X + Y = 1 and bothe are < 1 and > 0.
roman
On Wed, 2008-10-08 at 13:08 +0200, Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
is there a searchable database on pd objects? googling only found
this http://en.flossmanuals.net/PureData/ListofObjectscheers, Martin
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i assume, i wasn't very clear.
X and Y are supposed to be the coefficient and _not_ the incoming signal.
attached patch explains probably better, what i meant.
roman
On Wed, 2008-10-08 at 16:16 +0200, Jack wrote:
Hello all, hello Roman, I try your method with X+Y=1 and 0<X<1 and 0<Y<1 and your description for the patch. So i get this patch. It seems that i get strange result, no ? Or i
miss something ? ++Jack
Le 8 oct. 08 à 15:58, Roman Haefeli a écrit :
[inlet] | [* X] | [+ ]X[* Y] | [outlet]
and make sure, that X + Y = 1 and bothe are < 1 and > 0.
roman
On Wed, 2008-10-08 at 13:08 +0200, Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
is there a searchable database on pd objects? googling only found
this http://en.flossmanuals.net/PureData/ListofObjectscheers, Martin
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Ok Roman, now i understand, thanx. ++
Jack
Le 8 oct. 08 à 16:39, Roman Haefeli a écrit :
i assume, i wasn't very clear.
X and Y are supposed to be the coefficient and _not_ the incoming signal.
attached patch explains probably better, what i meant.
roman
On Wed, 2008-10-08 at 16:16 +0200, Jack wrote:
Hello all, hello Roman, I try your method with X+Y=1 and 0<X<1 and 0<Y<1 and your description for the patch. So i get this patch. It seems that i get strange result, no ? Or i miss something ? ++
Jack
Le 8 oct. 08 à 15:58, Roman Haefeli a écrit :
[inlet] | [* X] | [+ ]X[* Y] | [outlet]
and make sure, that X + Y = 1 and bothe are < 1 and > 0.
roman
On Wed, 2008-10-08 at 13:08 +0200, Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
cheers, Martin
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<patch.pd>
Hallo, Martin . hat gesagt: // Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
Apart from the solutions already mentioned: The help file for [list-map] in the [list]-abs collection contains example implementations for pole and zero, so if you know a bit of filter theory, you can design various filters for floats using poles and zeros.
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
Pdpedia?
Frank Barknecht _ ______footils.org__
Thanks all for your useful suggestions!!
Sorry if this might seem ignorant, but would it be an idea to make [lop], [hip] and so on objects for convenience sake to come with the distribution that would go alongside the names the audio objects? This might only be me being used to the supercollider syntax of adding a .ar (for audio, or ~) or .kr (for control, float) after the object/class name.
cheers, Martin
On Wed, Oct 8, 2008 at 10:46 PM, Frank Barknecht fbar@footils.org wrote:
Hallo, Martin . hat gesagt: // Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
Apart from the solutions already mentioned: The help file for [list-map] in the [list]-abs collection contains example implementations for pole and zero, so if you know a bit of filter theory, you can design various filters for floats using poles and zeros.
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
Pdpedia?
Ciao
Frank Barknecht _ ______footils.org__
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Martin . a écrit :
Thanks all for your useful suggestions!!
Sorry if this might seem ignorant, but would it be an idea to make [lop], [hip] and so on objects for convenience sake to come with the distribution that would go alongside the names the audio objects?
well, there is a lot of different way to filter data. I think it's important to have different kind of filter. that is why you can find an infinite impulse response filter (both lop and hip). it's name is iir. the finite response filter is named fir median filter are named media_3, median_5, median_n.
There is so much filter that it could not go in the [lop] or [hip] syntax.
cyrille
This might only be me being used to the supercollider syntax of adding a .ar (for audio, or ~) or .kr (for control, float) after the object/class name.
cheers, Martin
On Wed, Oct 8, 2008 at 10:46 PM, Frank Barknecht fbar@footils.org wrote:
Hallo, Martin . hat gesagt: // Martin . wrote:
Very simple question:
what is an object that can low pass filter floats (not ~)?
Apart from the solutions already mentioned: The help file for [list-map] in the [list]-abs collection contains example implementations for pole and zero, so if you know a bit of filter theory, you can design various filters for floats using poles and zeros.
is there a searchable database on pd objects? googling only found this http://en.flossmanuals.net/PureData/ListofObjects
Pdpedia?
Ciao
Frank Barknecht _ ______footils.org__
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Sorry if this might seem ignorant, but would it be an idea to make [lop], [hip] and so on objects for convenience sake to come with the distribution that would go alongside the names the audio objects? This might only be me being used to the supercollider syntax of adding a .ar (for audio, or ~) or .kr (for control, float) after the object/class name.
i don't think, it is feasible to write straight-forward objects for message filtering ...
pd has no notion of control rate, as supercollider or csound have ... messages can be used to emulate control rate signals, however there is no guarantee that control rate events occur monotonic, nor a way to figure out its sampling rate
by downsampling subpatches you can probably get close to the semantics of control-rate in other systems, although it might lack some expressive power
best, tim
On Oct 9, 2008, at 5:33 AM, Tim Blechmann wrote:
Sorry if this might seem ignorant, but would it be an idea to make [lop], [hip] and so on objects for convenience sake to come with the distribution that would go alongside the names the audio objects?
This might only be me being used to the supercollider syntax of adding
a .ar (for audio, or ~) or .kr (for control, float) after the object/class name.i don't think, it is feasible to write straight-forward objects for message filtering ...
pd has no notion of control rate, as supercollider or csound have ... messages can be used to emulate control rate signals, however there
is no guarantee that control rate events occur monotonic, nor a way to
figure out its sampling rateby downsampling subpatches you can probably get close to the
semantics of control-rate in other systems, although it might lack some expressive powerbest, tim
I think [lop] and [hip] could be handy. As for the control rate
issue, the mapping library has [resample] for this purpose. If you
want to ensure a steady message rate, using something like [resample
100].
.hc
-- tim@klingt.org http://tim.klingt.org
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