Pd-list April 2004

pd-list@lists.iem.at

143 participants
299 discussions

querying for the size of an array?
by David Merrill 11 Apr '04

11 Apr '04

Hello - Is there a way to query the size of an array? I'm playing samples from arrays, and I've discovered the -resize flag to the "read" message that I give to soundfiler which allows the array to change size dynamically to match the wav file. Now I'm interested in formulating my message to tabread4 dynamically, depending on the size of the array. much appreciated, David Merrill

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need Instructions installing PD osx
by Eduardo Melendez 11 Apr '04

11 Apr '04

Hi, I need yor help. I canÅ½t install PD on macosX. Tcl-Tk is allready installed, but donÅ½t know the next step. I think I really need detailed instructions. Thanks, Edu. _________________________________________________________ Do You Yahoo!? La mejor conexiÃ³n a internet y 25MB extra a tu correo por $100 al mes. http://net.yahoo.com.mx

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.pdrc #
by aym3ric 11 Apr '04

11 Apr '04

hello, is there a way to comment lines in the .pdrc file ? seems like nothing has been implemented to interpret "#" thinggies would be really handy imho .. aym3ric.

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Re: [PD] how to get matrix coordinates????
by yasmin ahmad 11 Apr '04

11 Apr '04

Hi, I asked this question a couple of weeks ago. Check out the archives for March 29,2004. I'm assuming you are using zexy...the solution looks like this: | [pack] | | [element $1 $2( | [mtx] | Yasmin A. > Message: 3 > From: "Owen Cartwright" <ocartwri(a)bennington.edu> > To: <pd-list(a)iem.at> > Date: Sat, 10 Apr 2004 21:23:41 -0400 > Subject: [PD] how to get matrix coordinates???? > > can someone help me with how to get a matrix coordinate? like if i have a 3 > by 3 matrix, how do i extract the point (1, 2)?? can this be done? is there > some other object that might do this better? > thanks, owen c. -- ___________________________________________________________ Sign-up for Ads Free at Mail.com http://promo.mail.com/adsfreejump.htm

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sip voip external ?
by marco＠metm.org 11 Apr '04

11 Apr '04

I would like an external which initiates a voip sip connection and allows one to send audio from pd to a phone (or ten phones actually). I am wondering if such a thing exists. I am just getting started thinking about making a small project to code this up, but I think it may be difficult, I need to think about having the audio encoded with the correct codec gsm or ulaw, as well as all the sip connection handling (I think that libosip0 handles the connections, but I don't know about the codecs). My other idea was that it might be easier to modify one of the existing sip clients like linphone, or kphone to accept audio from jack, and use jackd to make the connections from pd sending audio to the sip client. (Also, started looking at asterisk of course, it has so many functions it may already do what I want for all I know :) Anyway, I thought somebody here may have been down this path, so Thoughts? Ideas? Thanks, -- Marco

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RE: [PD] Audio trouble (2 in 6 out refused) - Mac OS X
by Ian Smith-Heisters 11 Apr '04

11 Apr '04

>From what I've heard on this list, portaudio (PD's sound engine) does not allow more ouputs than there are inputs. This is from an email from one of the portaudio developers. There may be some workarounds available, depending on the card's chipset and what open source drivers are available for it (try kxproject and emu101 or something like that). I was about to buy an Audigy 2 NX, but I'm holding off until I know whether there is a workaround possible. Please let me know if you figure it out. -Ian > -------- Original Message -------- > Subject: [PD] Audio trouble (2 in 6 out refused) - Mac OS X > From: pdlist(a)jlndrr.net > Date: Fri, April 09, 2004 8:08 am > To: pd-list(a)iem.at > > Hi all, > > Two sound card issues that you may resolve (I use the stable package > from Hans for Mac OS X): > > 1 - I've got an annoying problem with my audio settings: I have an USB > > 5.1 box, wich work natively with core audio, but if I try to set as 2 > input / 6 output it gave me the following error: > > error: portaudio: number of input and output channels must match > > if I try to "lie" to PD, setting 6 in / 6 out, I logically got: > > Error number -9999 occured opening portaudio stream > Error message: Invalid number of channels. > > Is it a known PD issue? Or is it an OS X issue? > > 2 - Is there a way to use multiple sound interface simultaneously with > > PD. I have a project where I would like to gather the input (very > basically : sound/no sound) from dozens of sound inputs. > > Thanks to all for the riche information I have found here, and special > > thanks to all the developpers and packagers! > > jln > > > _______________________________________________ > PD-list mailing list > PD-list(a)iem.at > http://iem.at/cgi-bin/mailman/listinfo/pd-list

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RE: [PD] Audio trouble (2 in 6 out refused) - Mac OS X
by Ian Smith-Heisters 11 Apr '04

11 Apr '04

Thanks for the tip, it seems that an Audigy 2 NX may be usable after all, even though I'm not on OSX--there's probably something similar for other OSes. I'd agree that this is a pretty important limitation. I'd love to try coding something to fix this if somebody would point me to the resources I'd need. -Ian > -------- Original Message -------- > Subject: Re: [PD] Audio trouble (2 in 6 out refused) - Mac OS X > From: pdlist(a)jlndrr.net > Date: Sat, April 10, 2004 11:05 am > To: "Ian Smith-Heisters" <heisters(a)0x09.com> > Cc: pd-list(a)iem.at > > Hi, > > 1 - I just tryed with Soundflower, a virtual CoreAudio soundcard for > > OS X, wich gave me 16 in - 16 out (all "fake"). > So I choosed SoundFlower as my 6 inputs, and my USB 5.1 Box as my 6 > output. It works now!! (but I lost my inputs until i found some routing > > app.) > > > 2 - For my second problem (multiple inputs from multiple soundcards), > > if someone know of a little intermediary app (for OS X, coreAudio) that > > will allow me to reroute as this: > > [2x8 in w/8 cheap sound boxes]-> [some routing app ; 16 out > w/SoundFlower]-> [PD 16 in w/SoundFlower] > > > -- By the way, don't everybody think that this is an important > limitation of PD? I heard of Jack, but it seem that it don't work well > > on Mac OS X, plus I don't really understand how it will get over the 1 > > soundcard limitation. > > Is there some plan to have PD manage more than one sound input device > at a time? > > > Anyway, it's a pleasure to begin to work with PD, a software supported > > by such a big community, with a lot of very responsive and passionate > people! > jln > > Le 9 avr. 04, à 19:02, Ian Smith-Heisters a écrit : > > > From what I've heard on this list, portaudio (PD's sound engine) does > > > not allow more ouputs than there are > > inputs. This is from an email from one of the portaudio developers. > > There may be some workarounds available, > > depending on the card's chipset and what open source drivers are > > available for it (try kxproject and emu101 or > > something like that). I was about to buy an Audigy 2 NX, but I'm > > holding off until I know whether there is a > > workaround possible. Please let me know if you figure it out. > > > > -Ian > > > Hi all, > >> > >> Two sound card issues that you may resolve (I use the stable > package > >> from Hans for Mac OS X): > >> > >> 1 - I've got an annoying problem with my audio settings: I have an > USB > >> > >> 5.1 box, wich work natively with core audio, but if I try to set as > 2 > >> input / 6 output it gave me the following error: > >> > >> error: portaudio: number of input and output channels must > match > >> > >> if I try to "lie" to PD, setting 6 in / 6 out, I logically got: > >> > >> Error number -9999 occured opening portaudio stream > >> Error message: Invalid number of channels. > >> > >> Is it a known PD issue? Or is it an OS X issue? > >> > >> 2 - Is there a way to use multiple sound interface simultaneously > with > >> > >> PD. I have a project where I would like to gather the input (very > >> basically : sound/no sound) from dozens of sound inputs. > >> > >> Thanks to all for the riche information I have found here, and > special > >> > >> thanks to all the developpers and packagers! > >> > >> jln

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FAQ wiki
by Hans-Christoph Steiner 10 Apr '04

10 Apr '04

I made the FAQ into a wiki using the old content. It still needs some organization work: http://pure-data.iem.at/docs/faq Everyone should contribute questions and answers so that we can help newbies get up to speed without having the same questions posted over and over on the list. It uses "Structured Text" because that is the default format of Plone's wiki. .hc http://at.or.at/hans/

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pdp_pidip_osx package install problems
by robcanning 10 Apr '04

10 Apr '04

Also, I'm trying to install Yves' pdp_pidip package, when i try: [Rob-Cannings-Computer:~/desktop/pdp_pidip_osx] robcanning% ./configure configure: error: cannot find sources (system/kernel/pdp.c) in . or .. when i try ./buildall [Rob-Cannings-Computer:~/desktop/pdp_pidip_osx/pdp_pidip_osx] robcanning% ./buildall configure: error: cannot find sources (system/kernel/pdp.c) in . or .. ./buildall: cd: scaf: No such file or directory configure: error: cannot find sources (system/kernel/pdp.c) in . or .. make: *** opengl: No such file or directory. Stop. make: *** guile: No such file or directory. Stop. [Rob-Cannings-Computer:~/desktop/pdp_pidip_osx/pdp_pidip_osx] robcanning% I'm sure i'm doing somthing stupid i just can't figure out what :-) where are these files and folders? when i stuffit expander decompressed the .tar.gz the following error came up: "...archive was compressed with an unknown compression method error 17535" (i tried downloading it a number of times) the uncompressed folder contains 13 items and is 1MB on disk. can anybody hep me with this? Thanks, Rob

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Re: PD-list digest, Vol 1 #1102 - 8 msgs
by Stefan Turner 10 Apr '04

10 Apr '04

Thanks for the help. I will have a look at biquad~ and start learning some theory! Out of interest, does anyone know what is allpass~ for and why it has a gain control? Cheers Stefan Hi Stefan: The term "allpass" refers to a filter that has a gain of 1 for all frequencies. There are lots of topologies (first order, second order, lattice), but the main types you will encounter in computer music are as follows: - Delay-based allpasses, where the allpass filter contains a delay line with a large number of samples. These are usually used in reverb construction. - Lower-order filter allpasses, such as first-order and second-order allpasses. These are less common in computer music languages. Csound has them (phaser1 and phaser2 - I programmed them a few years back), and MAX/MSP has a 2nd order allpass (called phaseshift~). Usually, several of these are arranged in series, and the output of the series is mixed with the input signal to produce the classic phase shifting effect. I am not sure if anyone has programmed first or second order allpasses for PD. You can definitely use biquad~ to obtain a 2nd-order allpass response. For that matter, you could get 2 first order allpasses out of biquad~ as well - you need to multiply together the transfer functions to get the proper coefficients. The one issue with using biquad~ (or phaseshift~, for that matter), is that the classic analog phase shifter uses a bunch of first order sections in series, with feedback around the entire network. The feedback needs to have a vector size of 1 to sound correct, while the filter coefficients do not necessarily have to be computed at the sampler (they can be computed at a slower rate). Sean Costello ____________________________________________________________ Yahoo! Messenger - Communicate instantly..."Ping" your friends today! Download Messenger Now http://uk.messenger.yahoo.com/download/index.html

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Pd-list April 2004