Pd-list November 2001

pd-list@lists.iem.at

69 participants
122 discussions

iem butterworth filter clicks / dc-blocker for PD?
by Larry Troxler 29 Nov '01

29 Nov '01

I have a slight problem in conjunction with using the Butterworth filters in iemlib (specifically, the lp2~ extern). It seems that if the cutoff frequency is changed for a filter object that has now slew-rate argument (for instantaneous cutoff frequency change), that a click is introduced. I assume that this is an artifact of changing that state variables of the filter. In my case, this problem surfaced in the use of a patch to implement one voice of a polyphonic instrument - when the voice gets re-used, and the new cutoff frequency is different than the one for the last note that the voice got used for, then I get a click at note onset. Assuming that this is not a bug in the iem filter code, this leads me to the question of is there a dc-block extern available for PD? I guess for now I could try chaining another low pass filter to try to reduce the click; but from my experiences with Csound and Perry Cook's STK, there is a special type of filter (one pole, one zero I think - but could be wrong) that is used to get rid of DC offset. Larry

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Re: [PD] What I know about this f****ing worm
by Norbert Math 29 Nov '01

29 Nov '01

sorry, this time the worm has eaten my mind :-( my message was for Chirstian Klippel in personam. i was asking him about his experiences with virus scanners, since i am thinking of installing one upon the incoming mail of the pd-list. (and Christian tells me that a filter might work technically - but he would prefer to keep people from using buggy software like outlook) the virus scanner will just prevent that infected mail will be transported by the list, it will and can not add any security for win/outlook users. my plan now is to: - install a scanner an see if it really works, otherwise - block all mail written in outlook and all executable attachements and let them go to the list only after an examination, and if this is not efficient - reject all outlook mail and attachements. what do you think? norbert ... On Wed, 28 Nov 2001, Yves Degoyon wrote: > is there a worm that translates > everything in German ??? > > Well, I don't bear any grudge on German > but I just can't read it. > > Yves/ >

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What I know about this f****ing worm
by Yves Degoyon 29 Nov '01

29 Nov '01

hi, sorry, I was infected by this f****ing worm, seemed to be FunLove, signature is : 1002sono: fsav (linux) virus (11828-54) the scanning of my hard drive cleaned the following files : c:\Windows\virscana.exe c:\1002sono c:\1017hist c:\1020hist Check if you've got them. I will check a virus site to know more about it. cheers, Yves/

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c++ wrappers
by Juha Vehviläinen 29 Nov '01

29 Nov '01

dear list, Miller, how about general c++ wrappers for making writing externals more clear and simple? Gem (or gemPlus?) seems to have this approach, I wonder if others have thought of it. Are there efficiency issues? juha

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About shoutcast~ linux versions
by Yves Degoyon 29 Nov '01

29 Nov '01

I've posted several alpha release of shoutcast~ for linux, some outputing very bad sound. Olaf gracefully merge our codes into an official release that you can get @ http://www.akustische-kunst.de/puredata/index.html the linux version still has a problem : resampling does not work, you have to use 44100 Hz. if you're still getting crackles, consider removing -rt flag for pd ( if your icecast server runs on the same box ). It can also be caused by an hardware limitation. i did test it on a Celeron 800Mhz / 128MB, i don't know about minimum hardware requirements. cheers, Yves/

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Help! - Setting up Midi Keyboard with PD
by Marcus Flanagan 29 Nov '01

29 Nov '01

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Re: [PD] What I know about this f****ing worm
by Yves Degoyon 28 Nov '01

28 Nov '01

yes, again, I checked a virus site, it's certainly BadTrans, like a guy said on the list at first. It's a trojan aiming at stealing passwords. Removal tool at : http://www.claymania.com/badtrans-removal.html Yves/ ----- Original Message ----- From: Yves Degoyon To: pd-list(a)iem.kug.ac.at Sent: Wednesday, November 28, 2001 1:22 PM Subject: Re: [PD] What I know about this f****ing worm hi again, I'm not too sure about virus identification because my anti-virus is quite old but I'm sure about the files removed. Maybe, it's a new worm. If it's "Magic Lantern", we're only spied by the F.B.I. !!! cheers, Yves/ PS : is there a "Bin Laden" virus already ??? I'm surprised it didn't appeared yet. ----- Original Message ----- From: Yves Degoyon To: pd-list(a)iem.kug.ac.at Sent: Wednesday, November 28, 2001 12:52 PM Subject: [PD] What I know about this f****ing worm hi, sorry, I was infected by this f****ing worm, seemed to be FunLove, signature is : 1002sono: fsav (linux) virus (11828-54) the scanning of my hard drive cleaned the following files : c:\Windows\virscana.exe c:\1002sono c:\1017hist c:\1020hist Check if you've got them. I will check a virus site to know more about it. cheers, Yves/

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Re: shoutcast~ lin
by Yves Degoyon 28 Nov '01

28 Nov '01

hi, I had the time to investigate why the lame encoding was wrong on linux, and got to this : there are difference between Windows and Linux lame APIs, they are hidden by Windows' wrapper DLL ( I hate DLLS !!! ) : when, in windows you ask to encode N samples, it is equivalent to encoding N/2 samples on linux. + the chunk size must be set to a very special value : 2*1152 for MPEG-I and 2*756 for MPEG-II !!! I assumed we are using MPEG-I layer 3. So, here is a candidate release for shoutcast~ ( linux ). Enjoy!!! Yves/ PS : did I see a virus on this list ( thanks for yesterday ???? ) ??? ----- Original Message ----- From: "Yves Degoyon" <ydegoyon(a)free.fr> To: "Olaf Matthes" <olaf.matthes(a)gmx.de>; "-Â¯-" <jdl(a)xdv.org> Cc: "smoerk" <smoerk(a)gmx.de>; "pd-list" <pd-list(a)iem.kug.ac.at> Sent: Tuesday, November 27, 2001 4:26 PM Subject: Re: shoutcast~ lin > I'll take a look at this problem quite soon...

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pd & alsa 0.9.0b9
by CK 28 Nov '01

28 Nov '01

hi, I'm finally moving towards the alsa drivers and got the latest (0.9.0beta9) release, aplay and amixer work fine, oss emulation is also ok but pd when started with the -alsa flag gives me : . . > opened 0 MIDI input device(s) and 0 MIDI output device(s). > audio buffer set to 40 > opening sound input... > snd_pcm_hw_params_set_access (input): Invalid argument > Sample width set to 2 bytes > opening sound output... > input channels = 2, output channels = 2 > port 5401 > TCL_LIBRARY=./tcl/library TK_LIBRARY=./tk/library ./bin/pd-gui 5401 > priority 96 scheduling enabled. > memory locking enabled. > Waiting for connection request... > priority 98 scheduling enabled. > memory locking enabled. > ./bin/pd-watchdog > ... connected > pd: pcm.c:472: snd_pcm_readi: Assertion `pcm->access == SND_PCM_ACCESS_RW_INTERLEAVED' failed. > Pd: signal 6 > ALSA lib pcm_hw.c:145:(snd_pcm_hw_hw_free) SNDRV_PCM_IOCTL_HW_FREE failed: File descriptor in bad state > snd_pcm_close (input): File descriptor in bad state > test:/home/x/audio/sw/pd/pd-0.34-4# stdout: Broken pipe could well be a bug in libasound, I was just wondering if anyone else already messed around with that, if I use -noadc OTOH (since the above is a read access problem) everything works fine ... card is ESS maestro 2e with snd-card-es1968 driver BTW, I had to make the following changes to s_linux.c: #ifdef ALSA01 #include <alsa/asoundlib.h> /* The include file path changed .... */ #endif #ifdef ALSA99 #include <sys/asoundlib.h> /* honestly ... */ #endif regards, x -- chris(a)lo-res.org Postmodernism is german romanticism with better http://pilot.fm/ special effects. (Jeff Keuss / via ctheory.com)

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GEM 0.85
by IOhannes m zmoelnig 28 Nov '01

28 Nov '01

hi list ! since the discussion of the badly documented pix_write annoyed me, i have just decided to really start my maintainance of GEM and released a pre-version of GEM-0.85. you can find it somewhere on ftp://iem.kug.ac.at/pd/Externals/GEM since i am tired now and don't have access to a windows box right now, there is only a linux-version available. the main changes from gem-0.84 are: i added all the functionality that used to be in GemPlus. the pix_write object is now rewritten and documented. it supports writing TIFFs and JPEGs. JPEGs will be *much* faster (due to the smaller file-size), but of course, ugly. the documentation system has been completely reorganized, and now is similar to that of pd: much more numberings i therefore suggest that those of you, who want to upgrade, remove the old help-files (the folders gem_*) to avoid having multiple files with the same content. i will finish the reference-patches hopefully soon, compile it on a winbox and then make a final release for 0.85. the new homepage of GEM will be hosted at http://iem.kug.ac.at/GEM unfortunately i have found no time, to make this yet. mfg.csa.rsa IOhannes ftp://iem.kug.ac.at/pd/Externals/GEM/LINUX/gem-linux-0.85PRE1.tgz

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Pd-list November 2001