Re: [PD] [route 0] seems to match all symbol type messages
Roman Haefeli wrote: hi all is this expected behaviour due to some unexpected reason or is it simply a bug? [route 0] seems to match all symbol type messages, i would say this is a bug (and rather a serious one) but not anything nor list messages (of course: if the first element of the list is '0', it matches). i would say this is expected behaviour. gmasdr IOhannes ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] tanh approximation
Hi, An approximation to tanh(x) is a continued fraction x/1+ (x^2)/3+ (4x^2)/5+ (16x^2)/9+ ... are you sure this is correct? Another well-known formulation is x/(1+x^2/(3+x^2/(5+x^2/(7+. which works for me and converges quickly. see http://nrich.maths.org/public/viewer.php?obj_id=1451 gr~~~ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] tanh approximation
oops, forgot the attachment tanh_.pd Description: application/applefile tanh_.pd Description: Binary data Am 07.10.2008 um 14:46 schrieb Thomas Grill: Hi, An approximation to tanh(x) is a continued fraction x/1+ (x^2)/3+ (4x^2)/5+ (16x^2)/9+ ... are you sure this is correct? Another well-known formulation is x/(1+x^2/(3+x^2/(5+x^2/(7+. which works for me and converges quickly. see http://nrich.maths.org/public/viewer.php?obj_id=1451 gr~~~ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] tanh approximation
Yep, they both converge on tanh afaics. Your one is more efficient though, I'll use that. (attached) But what I don't understand is why it needs scaling and doesn't naturally work over -1 to +1 cheers, Andy On Tue, 7 Oct 2008 14:46:56 +0200 Thomas Grill [EMAIL PROTECTED] wrote: Hi, An approximation to tanh(x) is a continued fraction x/1+ (x^2)/3+ (4x^2)/5+ (16x^2)/9+ ... are you sure this is correct? Another well-known formulation is x/(1+x^2/(3+x^2/(5+x^2/(7+. which works for me and converges quickly. see http://nrich.maths.org/public/viewer.php?obj_id=1451 gr~~~ -- Use the source tanh-cfrac.pd Description: Binary data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] tanh approximation
Hi all, An approximation to tanh(x) is a continued fraction x/1+ (x^2)/3+ (4x^2)/5+ (16x^2)/9+ ... See attached. I got it working, but by trial and error needed to scale the domain by 1/pi and add some weird scale to the range. I'm confused about where these numbers come from. Can anyone explain this please? cheers, Andy -- Use the source tanh-cfrac.pd Description: Binary data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] biquad~ -- frey-squelchiness
Hallo, Damian Stewart hat gesagt: // Damian Stewart wrote: let me know your thoughts... There are lots of abstractions missing, or rather, they are just symbolic links to files in /music/dlib/ :( Ciao -- Frank Barknecht _ __footils.org__ ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] looking for open dmx external
David Kirkpatrick wrote: Hi Peter, The Open DMX has stability problems and the fading is jolty sometimes. Something to do with not being able to store an entire DMX frame at the same time I think. I read an article a while ago that explained the exact differences, but I can't seem to find it again. actually, the Open DMX is just a standard FTDI-based USB to serial adapter with the outputs wired into a 5-pin DMX plug. in other words, you could achieve exactly the same with a standard serial port, wiring up the RX/TX lines into the right pins. this is all the Open DMX is on the inside. the system driver takes care of the timing, and doesn't do a very good job of it at all. definitely go with the Pro. -- damian stewart | skype: damiansnz | [EMAIL PROTECTED] frey | live art with machines | http://www.frey.co.nz ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] biquad~ -- frey-squelchiness
hey alls, i added the multiplication-by-ff1 fix that Chuck (i think it was Chuck) suggested and wrapped it up into d-biquad~.pd (i'm not trying to claim anyone else's work as mine - 'd-' is just the prefix i use to name all my classes - there's a comment in the patch itself explaining where it comes from, and when i get around to doing a proper release, proper credit will be given in any documentation ;-) so - the result is attached. the sequence was originally done in Ableton Live, and recorded as MIDI data (see the [midirecplay] abstraction) to the notes.qlist file. (i'm about to start learning tcl/tk so hopefully an Ableton MIDI sequencer clone GUI object should be appearing soon enough...) it uses the reverb and feedback delay from dinosaurs, a nice little bus abstraction (a concept that i borrowed from Roman Hafaeli), as well as my 808 hihats and cowbell and Roman's 808 kick and claps. it requires Guenter Geiger's ggee library, so best open with pd-extended. you might also see some errors around a missing object called 'rj_centroid' (unless you've been to one of the RJ sprints ;-) ) and something called d_pitchiness~ - don't worry about those, i'm not actually using the analysis. also another nice trick i discovered by accident - the kick is very late (there's a [pipe 10] on the kick trigger data), which gives it a nice funky lean. a nice next stage would be to alter the delay depending on which note in the bar we're on - shorter delay for 0 and 2 and a longer delay for 1 and 3 - or perhaps the other way round. even nicer would be to work out some kind of sinusoidal rhythmic pattern overall - i know from many hours boogying to techno that good rhythms are all about circles.. anyways. it's just an endless loop at this stage, but a constant drift in the filtering on the synth and the bass makes it interesting to listen to over time, i think. let me know your thoughts... cheers d -- damian stewart | skype: damiansnz | [EMAIL PROTECTED] frey | live art with machines | http://www.frey.co.nz frey-squelchyness.tgz Description: GNU Zip compressed data ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] looking for open dmx external
On Oct 6, 2008, at 4:48 PM, Damian Stewart wrote: David Kirkpatrick wrote: Hi Peter, The Open DMX has stability problems and the fading is jolty sometimes. Something to do with not being able to store an entire DMX frame at the same time I think. I read an article a while ago that explained the exact differences, but I can't seem to find it again. actually, the Open DMX is just a standard FTDI-based USB to serial adapter with the outputs wired into a 5-pin DMX plug. in other words, you could achieve exactly the same with a standard serial port, wiring up the RX/TX lines into the right pins. this is all the Open DMX is on the inside. the system driver takes care of the timing, and doesn't do a very good job of it at all. definitely go with the Pro. USB serial have pretty crappy timing in general, from my experience. I have banged my head against the FTDI driver quite a bit while working on Firmata. If you need really tight timing, go with a real serial port. .hc -- damian stewart | skype: damiansnz | [EMAIL PROTECTED] frey | live art with machines | http://www.frey.co.nz ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list kill your television ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] [route 0] seems to match all symbol type messages
On Oct 7, 2008, at 3:08 AM, IOhannes m zmoelnig wrote: Roman Haefeli wrote: hi all is this expected behaviour due to some unexpected reason or is it simply a bug? [route 0] seems to match all symbol type messages, i would say this is a bug (and rather a serious one) Yeah, that's a crazy bug, I wonder how long it's been around. Here's my test patch for it: route0-bug.pd Description: Binary data .hc but not anything nor list messages (of course: if the first element of the list is '0', it matches). i would say this is expected behaviour. gmasdr IOhannes ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list Mistrust authority - promote decentralization. - the hacker ethic ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
[PD] looking for a Workshop person - Arduino, etc
Hi PDers, a friend from the local arts university student union has asked me whether I know of someone who could do a workshop on the Arduino and using it with Max and/or PD. The workshop should happen this semester (up to Feb 2009) for two days or so. The Uni is in Linz, Austria. There is some money for it. This might work well for a travelling musician or artist who is close by, or someone from Czech Rep. or Austria needing a side job. I would find it interesting to also offer them a PD workshop or something similar, perhaps PDP or Gridflow or whatever other bits are cool and sexy this time of the year. It would be good to be biligual (German and English). Either contact me or Jakob at [EMAIL PROTECTED] for further details. Cheers, tim ___ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
