Pd-list August 2010

pd-list@lists.iem.at

123 participants
216 discussions

small patch for [pdp_mix]
by John Harrison 24 Aug '10

24 Aug '10

I just submitted 2 trivial patches for [pdp_mix]. Not sure if sevyves or somebody else needs to review/consider/submit: when crossfade is set to 1 for [pdp_mix], outlet should return exact copy of middle inlet. Instead [pdp_mix] still tries to mix the left and middle inlet, resulting in slight degradation of the resulting video. Consequently, a feedback loop connecting [pdp_mix] outlet to its middle inlet through a [pdp_del] with crossfade set to 1 will eventually result in a video that is completely black. This patch adds a trivial copy from the middle inlet to the outlet if the crossfade is set to 1. Here are the links to the patches, one for mmx and one for portable (no mmx): https://sourceforge.net/tracker/?func=detail&aid=3050324&group_id=55736&ati… https://sourceforge.net/tracker/?func=detail&aid=3050325&group_id=55736&ati… Thanks, -John

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Re: [PD] Pd-list Digest, Vol 65, Issue 121
by rene beekman 24 Aug '10

24 Aug '10

i spent several years at an online news publication and we regularly received "requests" in this vain (including threats to sue if not complied with within x number of days) from people we had published interviews with. the standard reply was always "you agreed to the interview, therefor to its publication, so no, we won't delete it." needless to say, nothing ever went beyond a couple of emails back and forth. (at most we would get a reply saying "yeah, but i don't want to be associated with that part of my life anymore" - which was always good for a laugh). hans, your reply sounds balanced and spot-on to me. besides the 'it's a public list and you agreed to it' argument, if you give in to this, you are creating a precedent and the public archive loses its value as a historical record. he has not given a strong enough reason to do that. he won't sue. (and if he's based in the states, afaik, you can then sue him for threatening to sue and not following through :D ) Date: Mon, 23 Aug 2010 12:49:57 +0200 > From: "IEM - network operating center (IOhannes m zmoelnig)" > <noc(a)iem.at> > Subject: [PD] [ot] sueing the mailing list... > To: pd-list <pd-list(a)iem.at> > Message-ID: <4C725255.5010101(a)iem.at> > Content-Type: text/plain; charset=ISO-8859-15 > > hi all, > > sorry for posting an OT mail to the mainlist, but i really want to have > as many opinions as posible on this. > > > i (as list admin) have just received an email by somebody who wants > their mail to be removed from the archive: > <snip> > Subject: FORMAT NOTICE > > August, 22 2010 > > I posted a message on the pd-announce list, being not aware that it was > a public list: http://lists.puredata.info/pipermail/pd-announce/XXXX > > Someone replied to my message, also publicly, on the pd-list list: > http://lists.puredata.info/pipermail/pd-list/XXXXX > > Today, I ask you to remove these two messages from your website, > because I don't want my name to appear publicly on the web. > > If they are not removed within 15 days, I will do the necessary to sue you. > > XXX XXXXX > </snip> > > > i must say, that i'm a bit perplex. > > while in principal i'm not opposed to removing the post if they have any > problems with it, > however, i find the tone at least impertinent, and would prefer to not > give way to a threat to sue. > > i have thus answered: > <answer> > hold on! > > i understand that you probably don't want an unsubscribe request to be > available in a public archive. > > however, all the pd-mailinglists have always made it clear, that > everything will be archived and made available to the public. > > thus, by subscribing to one of those mailinglists, you have given your > agreement that all your postings to the list will be made available via > those archives. > > furthermore, you are of course free to ask that your posting is removed > from the archives. > however, if somebody replied to your posting and has made this available > to the public, then i don't see what entitles you to request a removal. > it is their posting. > > the pd-lists are an open forum. > they are no place to threaten people with sueing. > > fgmadsr > IOhannes > </answer> > > > what do you think of all this? > > > fgmasdr > IOhannes > > > -- > IEM - network operation center > mailto:noc@iem.at > > >

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[ot] sueing the mailing list...
by IEM - network operating center (IOhannes m zmoelnig) 24 Aug '10

24 Aug '10

hi all, sorry for posting an OT mail to the mainlist, but i really want to have as many opinions as posible on this. i (as list admin) have just received an email by somebody who wants their mail to be removed from the archive: <snip> Subject: FORMAT NOTICE August, 22 2010 I posted a message on the pd-announce list, being not aware that it was a public list: http://lists.puredata.info/pipermail/pd-announce/XXXX Someone replied to my message, also publicly, on the pd-list list: http://lists.puredata.info/pipermail/pd-list/XXXXX Today, I ask you to remove these two messages from your website, because I don't want my name to appear publicly on the web. If they are not removed within 15 days, I will do the necessary to sue you. XXX XXXXX </snip> i must say, that i'm a bit perplex. while in principal i'm not opposed to removing the post if they have any problems with it, however, i find the tone at least impertinent, and would prefer to not give way to a threat to sue. i have thus answered: <answer> hold on! i understand that you probably don't want an unsubscribe request to be available in a public archive. however, all the pd-mailinglists have always made it clear, that everything will be archived and made available to the public. thus, by subscribing to one of those mailinglists, you have given your agreement that all your postings to the list will be made available via those archives. furthermore, you are of course free to ask that your posting is removed from the archives. however, if somebody replied to your posting and has made this available to the public, then i don't see what entitles you to request a removal. it is their posting. the pd-lists are an open forum. they are no place to threaten people with sueing. fgmadsr IOhannes </answer> what do you think of all this? fgmasdr IOhannes -- IEM - network operation center mailto:noc@iem.at

10 9

slipenc/dec
by IOhannes m zmoelnig 24 Aug '10

24 Aug '10

hi. for transmitting OSC over TCP/IP i thought about using slip (rather than [(un)packOSCstream] [1]). now martin has already done this, but unfortunately i'm not very satisfied yet. probably i misunderstand something, but some things just don't work for me (even in the help patch): encoding [1 2 3 4( results in [192 1 2 3 4 192( (fine), and decoding this results in [1 2 3 4( (great), but why do i get an error: "slipdec_list: dropped 1 bytes after packet" ??? <snip> in: 192 1 2 3 4 192 valid: 1 decoded: 1 2 3 4 slipdec_list: dropped 1 bytes after packet </snip> the example has [192, 1, 219, 220, 192( which 'should give 1 192', but really is only decoded to [192(. <snip> in: 192 in: 1 valid: 0 in: 219 in: 220 valid: 1 decoded: 192 in: 192 </snip> sending the data as a single list, get's me the correct [1 192(, but again with the "dropped 1 bytes after packet" error. other single serialized lists won't work at all, e.g. sending the first example as [192, 1, 2, 3, 4, 192(, will give me no result at all <snip> in: 192 in: 1 valid: 0 in: 2 valid: 0 in: 3 valid: 0 in: 4 valid: 0 in: 192 </snip> obviously this defeats the purpose of the object a bit (after all, it's meant to reassemble broken up packages). i thought, it should be able to decode [1, 192, 2 3, 4, 5 192 6, 192( into [2 3 4 5, 6( (dropping the leading 1, as the line is unintialized) fgmasdr IOhannes [1] i really find the slip approach more convincing when it comes to lost packages; with un/packOSCstream you must never miss the beginning of the stream, else you are lost forever...

3 4

signal objects inside dynamically created abstractions?
by Peter Plessas 23 Aug '10

23 Aug '10

Dear list, wondering about the following behavior: Pd's dsp is switched on. Creating an abstraction inside a subpatch by internal pd messages like [obj 10 10 abstraction< The tilde objects inside this abstraction do not work unless Pd's dsp is toggled (off and on again). Just creating tilde objects inside a subpatch (without being contained inside an abstractio) and connecting them works. I suppose there is a reason for this, but didn't find it. P.

5 6

random oscillation between two values
by Matteo Sisti Sette 23 Aug '10

23 Aug '10

Hi, In my patches (especially in visual ones) I often need some value to randomly "oscillate", or change smoothly, between two extremes, at regular intervals (e.g. change every frame). For this purpose I often use filtered noise: [random] followed by a filter of the kind y[n]=a*y[n-1]+(1-a)*x[n] with 0<a<1 This is fine when I don't need to have a very precise control over the range and especially when it doesn't have to be controlled dinamically, so I just adjust the "smoothness" and compensate the gain by trial and error. But when I need to easily control the minimum and maximum and have a parameter that controls "smoothness" in a natural way, I am not very satisfied with this approach. Another technique I use is to have a random increment (which can be positive or negative) added to the current value; then I can force it to "bounce" when it reaches either extreme. Same as above: it works but is often unsatisfying. What do you usually use in these situations? I'd prefer a roughly uniform distribution of the final result over a gaussian one, or at least one that would have a minimum and a maximum without clipping (the problem with a gaussian is that you either get a peak in probability of the extreme values, or in order to avoid them, you get very low density for any value near them).... I know this is not a well-defined problem, that there are hundreds of answers with advantages and disadvantages depending on the application; but I guess many of you have often needed something similar and I'd like to hear what are your favourite solutions. thanks m.

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Re: [PD] [ot] sueing the mailing list...
by Greg Pond 23 Aug '10

23 Aug '10

---------- Forwarded message ---------- From: "Greg Pond" <gregpond(a)gmail.com> Date: Aug 23, 2010 10:22 AM Subject: Re: [PD] [ot] sueing the mailing list... To: "András Murányi" <muranyia(a)gmail.com> If you honor this request, do you create precedent to remove anyone's message whenever they ask? If there is no legal obligation, I suggest leaving the list archive in tact. On Aug 23, 2010 9:59 AM, "András Murányi" <muranyia(a)gmail.com> wrote: > On Mon, Aug 23, 2010 at 4:46 PM, Charles Henry <czhenry(a)gmail.com> wrote: > >> On Mon, Aug 23, 2010 at 5:49 AM, IEM - network operating center >> (IOhannes m zmoelnig) <noc(a)iem.at> wrote: >> >> > what do you think of all this? >> > >> > >> > fgmasdr >> > IOhannes >> > > While, if i was the list owner, would responsibly slap a pie in the face of > the guy :o), it may also make sense to add the word "public" somewhere to > the listinfo page, and to the Welcome mail as well. Right now it says > "private" which can confuse those who are easily confused. > > Andras

1 0

how does frame seeking work?
by Matteo Sisti Sette 23 Aug '10

23 Aug '10

Hi list, I've always wondered how seeking works when reading a video file that is encoded with a variable bitrate. I understand that, if there are I frames and P frames, it always has to seek the last I frame before the frames you need to seek and then decode from there, but even so, how does it know what's the position in the file of that I frame, if the bitrate is not constant? So even considering a codec with all I frames (such as MJPEG), if each frame occupies a different number of bytes, how does it know where to read? Does it seek at an approximate position based on an average bitrate and then correct? Or is there some sort of table at the beginning of the file? By the way, I encoded a file with MJPEG and the only setting I could change was a "quality" setting, so I guess the resulting bitrate is not constant, is it? thanks m.

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synchronizing a seq-textfile using c_seqplay to a metro
by mark edward grimm 23 Aug '10

23 Aug '10

hello I am using the seq_conversion in c_seqplay from rjdj lib to convert a midi file to a seq-textfile. I am aware that the "tempo $1" is relative to the tempo in the textfile. How do I get that tempo from qlist in c_seqplay? Ultimately I want to get the tempo from qlist and convert so it is relative, using [tempo $1{, to synchronize to a master metro. Any idea how this is done? Synchronizing a seq-textfile using c_seqplay generated from a midi file to a metro? I have read docs but can't figure it out.... thanks! mark

1 0

Re: [PD] polygon(3)2obj >> abstract, presentation and example
by philippe boisnard 23 Aug '10

23 Aug '10

Re very nice work >> tomorrow I ll work to adapt this process for polygon(x) good night p Le 22 août 10 à 23:48, cyrille henry a écrit : > hello > > in fact, it was faster to do it from scratch. > here it is. > i made only obj_square, but other primitive should be fast to > implement. > > Cyrille > > Le 22/08/2010 22:21, cyrille henry a écrit : >> hello filipe, >> >> i've made lot's of new stuff for obj exporting, but did not announce >> them since no one was interested until now >> you should have asked! >> >> what i curently use is an abstraction. >> i need to polish it a bit if i had to share it, but the way to use >> it is : >> create a patch like you are used to, using rotate / translate / >> repeat / >> etc >> replace the "square" object with "obj_square" object >> (need work for the other primitive, but nothing complex) >> create and bang a obj_exporter object and that's it! >> >> Cyrille >> >> >> Le 22/08/2010 21:56, philippe boisnard a écrit : >>> Hello Cyril >>> >>> Nicolas told me that. >>> Here is only an abstract and not an object. >>> we searched the object [cube2obj] but have not not found. >>> I'm interresting >>> but I can't create object. >>> >>> but jI try to create an abstract which would recover all data from a >>> complex figure polygne is iterative : >>> for example after iteration : >>> [t b a] >>> I I >>> [100( I >>> I I >>> [until] I >>> [gemlist] >>> >>> >>>> since 3d printing is now very popular, Gem can be a good way to >>>> create >>>> models. >>> Yes it's exactly my way >>> >>> >>> br >>> >>> p >>> > <obj_exporter.zip>

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Pd-list August 2010