Pd-list May 2001

pd-list@lists.iem.at

65 participants
107 discussions

MIDI question
by Greg Rippin 19 May '01

19 May '01

Is there any way that you can select a specific MIDI port using PD? Specifically, I'd like to get MIDI info from a sequencer (Cakewalk) into PD (currently using MIDI Yoke, which creates virtual MIDI ports and patch cables to allow MIDI to be passed internally between applications) and echo it out to a synth. If PD tries to send it out the same port that it's recieving on, a feedback loop is created and the system crashes. I see in the documentation how to select a channel for a notein message, but not the port. Is this possible? I'm using Win98 and PD .32 (I think). Tschuss, Greg

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local arrays?
by Juha Vehviläinen 19 May '01

19 May '01

Is there a way to create local arrays? The naming convention with sends and receives, "$0-local" doesn't seem to work. What I'm doing: I have a sampleplayer-abstraction, and would be nice to keep the sampled data inside the abstraction. Some other way to accomplish this? jusu

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Serial
by richard.bowers 19 May '01

19 May '01

There's a serial object in PD but it seems to be an output only. Is there a companion object for input? I have no network installed but I would like to send control data over the serial cable between two pcs, rather than over MIDI. Is it possible? Any help would be greatly appreciated. THanks in advance, Richard

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midi USB etc
by Timmy B 18 May '01

18 May '01

Hi all, I have the pleasure of being able to buy some hardware rather than having to make do with what's lying around spare. and i need a midi and audio interface for a linux-PD combination that will run well and stable. best would be a USB solution, that I can happily stick into a laptop afterwards, but other than the apparent audio success of the Swissonic, I cannot find and USB-midi solutions for linux. Or am i looking in the wrong spots? Who can recommend a card for SuSE 7.1 and one of the newer PDs? reliability is a major concern - someone should be able to turn the machine on every day and have the thing run for 12 hours without hardware problems. Cheers, tim -- -------- ------------------------------------ \ / Tim Boykett mailto:tim@timesup.org \ / TIME'S UP \/ Industriezeile 33 B /\ A-4020 Linz /xx\ ph/fax:+43/732-787804 /xxxx\ http://www.timesup.org -------- ------------------------------------

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Need help with midi!
by Alfonso Acosta 18 May '01

18 May '01

Hi First of all I have to thank Mr Puckette for such a good program. I've been playing with audio and it works really well (apart from sync). Now i'd like to work with midi but I don't manage to use my soundbaster's synth (emu10k-1). I dont't get any kind of error running pd. I don't know the synth's port number. How can I know it? As I said, audio works perfrctly well with the alsa driver. Does alsa configure midi too? When I get to the midi help patch (midi.pd) by clicking help on the menu from a "noteout" object I don't know what values should I put in midiout: Thanks a lot: Alfonso Acosta thanks a lot _______________________________________________________________ Do You Yahoo!? Yahoo! Messenger: ComunicaciÃ³n instantÃ¡nea gratis con tu gente - http://messenger.yahoo.es

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MP3-PD-MP3-mutilation
by _-¯-_ 17 May '01

17 May '01

previous post didnt make it? again: just put a little howto like text with trashy info on how to set up for pd to output to icecast stream and input from another or same icecast stream or mutliple. connect everything with everything else. all in 1 box. http://barely.a.live.fm/pd/MP3-PD-MP3-mutilation.howto.txt -- I x d ¥ . o 7 g I x Þ V · O R g X Ð v . O R G

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RE: [PD] [gem] printing numbers
by Mark Danks 17 May '01

17 May '01

Well, there really isn't a good reason...except for some legacy. The GEM text objects used to parse their own messages which came in to generate strings (in fact, they used to only accept one string). Miller added atom_string() which converted any message into a string...including floats. This is what the text objects use now. However, at the top of the function TextBase::textMess(), there is a check to make sure that the first argument in the message is a SYMBOL (ie, just a string). This really isn't needed anymore, but it is what is preventing you from doing what you want. There probably is some way to convert a number into a string, but I don't know if off the top of my head. Work arounds are: 1) do --> text "123" : but then you will have quotes 2) do --> text foo 123 : but then you will have the string foo in front of your number 3) change TextBase and recompile the code : but you would need to have a compiler 4) wait for me to release a new version of GEM : but I am going off to E3 in LA, so it won't happen until early next week Sorry about that! Later, Mark ============================ = mdanks(a)stormfront.com = Lead Programmer PS2 = http://www.danks.org/mark ============================ > -----Original Message----- > From: Thomas Grill [mailto:t.grill@gmx.net] > Sent: Wednesday, May 16, 2001 10:54 AM > To: PD list > Subject: [PD] [gem] printing numbers > > > Hi list, i'm stuck at a simple problem: > how can i output numbers using the text2d object? > When i send it a "text 123" message, i get the error message > "GEM: Textbase: > wrong type", just because the number is not a symbol. > So... how? > > thanks, Thomas > >

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Re: [PD] PD Pitch shifter
by richard.bowers 17 May '01

17 May '01

Many thanks again, Pix. I'll revisit the patch. I've posted this to the list as you suggest in case people may find it useful. Richard Bowers. Subject: Re: [PD] PD Pitch shifter | On Wed, 16 May 2001 09:49:15 +0100 | "richard.bowers" <richard.bowers(a)ntlworld.com> wrote: | | > Thanks very much, Pix. That helps a lot. I understand the principle now. | > My | > remaining problems are to do with the pd objects themselves. Maybe you | > could | > help me out? I've enclosed the patch so that we are looking at the same | > thing. | > | > I think I pretty much understand the left hand column - for setting the | > transposition via tape head speed. However... | > | > 1) Am I right in thinking the delay time (5000 samples or ms?) is | > immaterial, other than it has to be larger than the window size and that | > it | > will actually delay the response. | | yes.. it is the maximum size of the delay line. it has to be larger than | the window size. just like csound (i used to use csound) you have to set | it at init time and you can't change it afterwards, so you set it to some | arbitrarily large value (but not so large as to soak up all your ram). the | delay in the output will only be as big as your window, which you can | change live. | | > 2) I am unsure about the roles of moses | | moses "splits a stream" of numbers. so here, all the numbers >= 1.5 will | appear on the right output, and all the numbers less than that will appear | on the left. you can see that numbers on the left immediately get used to | trigger a "1" signal. so this just means that any numbers smaller that 1.5 | will be turned into 1's. this is to stop reading from the very beginning | of the delay line where bad things can happen. | | > 3) I don't see what wrap and t b f are doing. | | wrap is almost just returning the fractional part of a floating point | number. eg, 1.5 -> 0.5, 2.3 -> 0.3... it's called wrap because of the way | it deals with negative values, -1.1 -> 0.9 (and not 0.1), -2.7 -> 0.3 etc. | | "t b f" is a trigger object. it takes it's input, and first, sends it out | as a float to the right most output, then sends it out as a bang on the | left input. the reason this is done, is because the "/" object that it is | being sent to will 'trigger' when it receives a bang or a value in it's | left most inlet (like most objects in pd). so the trigger makes sure that | the value is sent to the right inlet, and then after it has done that, it | bangs the left inlet to make it recalculate the division. | | the trigger object is used almost exclusively to get around the facts that | objects only trigger when hit on certain inputs. it's also used to make | sure that things get done in the right order. | | > Sorry, this is very much a newbie question. I would be grateful if you | > could | > help me with this. I haven't sent this to the list. I'm using a pitch | > shifter based on a similar model in CSound but it is simply not as | > smooth. | > I'd like to be able to write the pd version in CSound. | | maybe you should send this to the list incase it is useful for other ppl. | i initially didnt post to the list because the traffic has been picking up | recently, but now i'm thinking it probably would have been useful info. | | > Many thanks, | > | > Richard. | > | > | i'm pretty sure the one you are talking about is the rotating tape | > head | > | pitch shifter, which i agree is very cool. actually the idea crops up | > all | > | over the place in my main patch. anyhow... | > | | > | it is modelled on an actual physical device. you have a tape loop, | > running | > | at constant speed (eg, a delay line). then you have a number of read | > heads | > | mounted on the edge of a disc that rotates, passing the heads over the | > | tape (a number of delay taps, which can move). the gain on the | > different | > | read heads is oscilated so that the signal is only used from the read | > | heads that are in contact with the tape. you also have to be careful | > to | > | have the gain completely off when the head first touches the tape, or | > when | > | it leaves the tape (eg, dont mix in the signal from the delay reader | > as | > | you change it's position). | > | | > | in the digital world you only really need two delay taps (because you | > dont | > | hav eto worry about the mechanics of rotating them around a disc, in | > which | > | case you would probably need about three). the delay taps sweep (ala, | > | phasor) across the delay line (at a speed which determines the pitch | > | shift). you oscilate the gain of the two taps with a cosine | > (oscillating | > | between 0 and 1), in such a way that just as the tap is about to leap | > from | > | one end of the tap to the other, it's gain is 0. | > | | > | there's my possibly incoherent description... | > | | > | pix. | > | | > | On Wed, 16 May 2001 00:31:22 +0100 | > | "richard.bowers" <richard.bowers(a)ntlworld.com> wrote: | > | | > | > Hi all. | > | > | > | > I was exploring the supplied patches in pd and was delighted at the | > | > quality | > | > of the delay pitch-shifter. Would anyone be able to describe it's | > | > implementation to me as I would like to be able to converted it into | > a | > | > CSound instrument (sorry ;) ). I've had a go at understanding it but | > I'm | > | > not | > | > very confident with the PD language so I need some help. | > | > | > | > Many thanks, | > | > | > | > Richard Bowers. | > | > | > | > ============================ | > | > Richard Bowers at | > | > http://www.kakutopia.fsnet.co.uk | > | > ============================ | > | > | > | | >

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RE: [PD] pix_movie
by Linium 16 May '01

16 May '01

Le Mon, 07 May 2001, Mark Danks a écrit : > The Voodoo2 only accepts 256x256 or smaller...if you try to display > anything larger, it will just reject the texture and make the polygon white. > pix_movie does not try to resize the texture or anything else. Also, > pix_movie immediately uploads the texture, so if it isn't a power of two, > you will not have any texturing. My intent was at first to display movie as they are, without 3D positionning or mapping to geos. With pix_draw I can display pictures larger than the texture ram because it is directly rendered without passing through it. I was hoping that since I can do it with picture (and even not power of 2, btw it works despite an error message), i could display movies with larger res. It would be too slow not using texture ram for displaying simple movie on the "flat screen" ? BTW, is it possible not to resize but to cut in a source movie a square of the wanted size to then pass it to the texture object ? Linium (who have to consider a new 3D card)

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[gem] printing numbers
by Thomas Grill 16 May '01

16 May '01

Hi list, i'm stuck at a simple problem: how can i output numbers using the text2d object? When i send it a "text 123" message, i get the error message "GEM: Textbase: wrong type", just because the number is not a symbol. So... how? thanks, Thomas

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Pd-list May 2001