Pd-list October 2000

pd-list@lists.iem.at

30 participants
38 discussions

buffers
by smedge 02 Nov '00

02 Nov '00

hi list. im really wondering, if others have the same buffering-times that i have, or if there is a way to change things. i work on win95, my cpu is a 400mhz. i use a event "gina" sound card (2in, 8out), but have also testet awe 64gold and pci128 soundblaster. my lowest buffertime (to run in, out, midi and 44.1 khz was about 200 msec (with the pci128!). on all lower buffers windows is closing the audio devices. this weekend i watched msp on the mac, which was running on G3 350mhz, which has a buffer of 256 samples (or even lower). is windows unable to have the same performance??? (which results do you get with NT or linux?) or is it the soundcard the problem. tricks? or treat... marius.

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and FFT-strech the frequencybands
by smedge 31 Oct '00

31 Oct '00

hi list iÅ½m searching for a mathematical genius, who can help me with the following problem. i tried to build a patch, which can read out from fft~ results in various speeds (for example to spread the frequencies 0-10000 over the whole frequency range of 22050 points). i took a squared phasor~ to read out the 2048 points of the frequency-adresses (both real and imaginary part) of the fft. but the sound-result was flickery and poor. now i think my problem is the wrong handelling of the real- and imaginary-parts (or their vector-sum) in the algorithm and re-fft. or would i have to change the fft-process itself? any ideas? marius.

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:zgetfn(idle):corrupt object/Gem4Mac
by Ricardo Climent 30 Oct '00

30 Oct '00

report for Gem4Mac, check failed:zgetfn(idle): corrupt object (on Max window) and then MaxFat 3.6.2 -quit application, error type 2. When 1st) Opening any patch (i.e. gem1.redSquare) 2nd) Creating any GEM-window (+ render it), then closing the patch before closing the GEM-window. Ricardo School of Music QUB

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RE: parallal port object
by Norbert Math 29 Oct '00

29 Oct '00

forum wrote: >hi all > >has anybody done a parallel object already ? > >need to write to the par-port (no reading) > >norbert, i think you've done this, can I have the code ? > >mfg.dsa.rwe >iohannes hi iohannes & list, sorry this is goin a bit long - skip it if you are not interested, and sorry too, the code is linux only. Here is the code for an external which opens a file/character-device and writes characters to it. I used it to drive old pinwirters from pd. BEWARE - this is very dangerous!! It might allow you to open an important file and hack into it. Better check carefully which file/device you open and, of course, never run this external as root. ------------------------------------------------------------- file: lp.c ------------------------------------------------------------- /* file: lp.c */ /* Author: Norbert Math, math(a)alien.mur.at */ /* DISCLAIMER: I do not take any responsability for this code!!*/ /* code for line printer pd class */ /* Can also be used for writing into files and other caracter devices */ #include "m_pd.h" #include <stdio.h> typedef struct lp { t_object t_ob; t_symbol *x_sym; t_symbol* filename; FILE* x_file; } t_lp; void lp_ft1 (t_lp *x, t_floatarg g) { } static void lp_print(t_lp *x,t_symbol* lpstring) { if (lpstring != &s_) x->x_sym = lpstring; fprintf (x->x_file, "%s\n", *x->x_sym); post("lp: %s", *x->x_sym); fflush(x->x_file); } void lp_open(t_lp *x,t_symbol* filename) { x->filename = filename; post("lp: opening %s",x->filename->s_name); if ((x->x_file = fopen(x->filename->s_name, "w")) == NULL) { post("lp: Can't open %s", *x->filename); } setbuf(x->x_file, NULL); } void lp_close(t_lp *x,t_symbol* filename) { x->filename = filename; post("lp: closing %s",x->filename->s_name); if ((x->x_file) == NULL) { post("lp: No file to close"); return; } if (fclose(x->x_file) !=0) { post("lp: Error closing %s", *x->filename); } } void lp_free() { post("lp_free"); } t_class *lp_class; void *lp_new() { t_lp *x = (t_lp *)pd_new(lp_class); inlet_new(&x->t_ob, &x->t_ob.ob_pd, gensym("lp_in"), gensym("ft1")); post("lp_new"); return (void *)x; } void lp_setup() { post("lp_setup"); lp_class = class_new(gensym("lp"), lp_new, 0, sizeof(t_lp), 0, 0); class_addmethod(lp_class, (t_method)lp_print, gensym("print"),A_DEFSYM,0); class_addmethod(lp_class, (t_method)lp_open, gensym("open"),A_DEFSYM,0); class_addmethod(lp_class, (t_method)lp_close, gensym("close"),A_DEFSYM,0); } ---------------------------------------------------------- file: lp.pd This is an example of how to use lp.pd-linux first click on a "open" message, then on a "print" message, finally on a "close" message. ---------------------------------------------------------- #N canvas 246 -6 600 484 8; #X obj 102 253 lp; #X msg 70 81 open /dev/lp0; #X msg 82 104 close /dev/lp0; #X msg 102 130 open foofile; #X msg 126 165 close foofile; #X msg 236 195 print hoi; #X msg 235 170 print ++++++++++++++++++++++++++++++++++; #X msg 237 219 print .; #X msg 235 115 0; #X msg 262 115 1; #X obj 235 145 metro 200; #X floatatom 296 116; #X connect 1 0 0 0; #X connect 2 0 0 0; #X connect 3 0 0 0; #X connect 4 0 0 0; #X connect 5 0 0 0; #X connect 6 0 0 0; #X connect 7 0 0 0; #X connect 8 0 10 0; #X connect 9 0 10 0; #X connect 10 0 6 0; #X connect 11 0 10 1; ---------------------------------------------------------- If you need to access the parallel port directly, ie. you do not want to print out characters but you want to use it for controlling external hardware/relays you need to write the external yourself. Here are some, i hope useful, hints : #include <unistd.h> First, use ioperm to grant access to the I/O-Port (only root can call iopoerm!): if(ioperm(0x378,1,1)) { fprintf(stderr,"ioperm error.\n"); exit(1); } Check the bios if your par.port actually uses the address 0x378. Then define this little assembler function: static inline void port_out( unsigned short int port, unsigned char val ) { __asm__ volatile ( "outb %0,%1\n" : : "a" (val), "d" (port) ); } Now, a call to port_out() sets the bits on the par.port. port_out(0x378, 000); sets all bits to 0. Finally, just wrap foo1.c around it and your external is ready ;-) Useful literature: The coffee mini-HOWTO describes how to control a coffe machine over the parallel port - when will we be able to make coffee with pd?? mfg norbert

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Re: Re: TK version trouble in Pd
by tarasiewicz＠gmx.at 28 Oct '00

28 Oct '00

sorry, posted too fast there is no /usr/lib/libtk.so in suse 7 as far as i found out the only file i found was the libtk8.3.so in /usr/lib/ i think this so in every suse version so maybe a possibility to find out, which version the user has installed on his system is locate /usr/lib/libtk???.so this should return the installed version (at least for suse) m. On Saturday 28 October 2000 19:59, tarasiewicz(a)gmx.at wrote: > there seems to be no symbolic link for suse in /usr/lib/libtk.so > > maybe you could try to use > > locate /usr/lib/libtk???.so > > to get the current release? (returns the found file) > > m. > > On Monday 23 October 2000 12:31, Guenter Geiger wrote: > >Â This is distribution dependent, but I'm using a autoconf system on > >Â Debian, so no problem with that, somebody should take a look at > >Â SuSe as well ... > > > >Â Guenter > > > >Â Miller Puckette writes: > >Â > Hi all, > >Â > > >Â > I finally figured out that you can just link Pd to "tk" instead of > >Â > "tk8.0"; /usr/lib/libtk.so should normally be a symbolic link to the > >Â > correct version. Â I'll get this right for the real 0.32 release. > >Â > > >Â > cheers > >Â > Miller -- Sent through GMX FreeMail - http://www.gmx.net

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Re: TK version trouble in Pd
by tarasiewicz＠gmx.at 28 Oct '00

28 Oct '00

there seems to be no symbolic link for suse in /usr/lib/libtk.so maybe you could try to use locate /usr/lib/libtk???.so to get the current release? (returns the found file) m. On Monday 23 October 2000 12:31, Guenter Geiger wrote: >Â This is distribution dependent, but I'm using a autoconf system on >Â Debian, so no problem with that, somebody should take a look at >Â SuSe as well ... > >Â Guenter > >Â Miller Puckette writes: >Â > Hi all, >Â > >Â > I finally figured out that you can just link Pd to "tk" instead of >Â > "tk8.0"; /usr/lib/libtk.so should normally be a symbolic link to the >Â > correct version. Â I'll get this right for the real 0.32 release. >Â > >Â > cheers >Â > Miller -- Sent through GMX FreeMail - http://www.gmx.net

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list was down
by unknown＠example.com 28 Oct '00

28 Oct '00

due to technical problems our server (including the mailinglist-server !) was down for some 20hours. it's up again now i hope nobody noticed... mfg.sdt.kiu iohannes

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parallal port object
by unknown＠example.com 27 Oct '00

27 Oct '00

hi all has anybody done a parallel object already ? need to write to the par-port (no reading) norbert, i think you've done this, can I have the code ? mfg.dsa.rwe iohannes

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pd area on my site....
by Christian Klippel 22 Oct '00

22 Oct '00

hi everybody on this list ! recently i opened a site for jmax etc, http://mamalala.de now im looking for people who wants to administer a pd section there. there should be sources, ready-to-use binarys, patches etc. there. if anybody is interrested, contact me please. cheers, chris -- visit me at http://mamalala.de

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Problems passing symbols to abstractions
by Larry Troxler 22 Oct '00

22 Oct '00

I would like to make an abstraction that uses an internal array. Since I want the array to be a different one for each instance of the abstraction, I think that I would like to pass the name of the array to be created as an argument to the abstraction. However, I am having a lot of difficulties working with symbols. I haven't been able to create an abstraction, for example, that prints its (fixed number or) arguments. Can someone possibly post a patch for an abstraction that takes two arguments, the first being a symbol, and the second a number, which simply prints its arguments when it is loaded? This would help a lot! Thanks! Larry Troxler

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Pd-list October 2000