Pd-list November 2005

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143 participants
298 discussions

Re: [PD] basic DSP stuff
by cyborgk＠nocturnalnoize.com 11 Nov '05

11 Nov '05

You could indeed say that "entity of your choice = 1/0". But you need a compelling reason why such a quantity is useful, and various proofs on how it is derived and used. All math depends on certain assumptions and those assumptions are different in different circumstances - aka Euclidian geometry and topology. Actually, you can say 1+2 = 12 ... and if you are putting together a string in a programming language, that makes sense and is useful, it is a valid operation. Many object oriented programming languages let you redefine basic symbols such as "+ - * /". But string addition wouldn't be very helpful for doing audio math calculations. So if you want to define your own i, go ahead, but don't you think your calculations are going to turn out better if you follow the normal math definitions? ~David > What I'm getting at is that expressing rotation as complex numbers is no > different than using cartesian coordinates. Why, when you multiply two > points, would one of the multiples turn negative? > I see no reason you couldn't say i = 1/0. Then 4*0*i=4. That makes as much > sense. > > On 11/10/05, Mathieu Bouchard <matju(a)artengine.ca> wrote: >> >> On Mon, 7 Nov 2005, Chuckk Hubbard wrote: >> >> > Not that I don't appreciate the snide commentary, but this is why I'm >> > asking. You can't forget the sin*sin part. i stands for "imaginary". >> > (slowly: i is "imaginary"). Turning the product of sines into the >> > negative product of sines is imaginary. There is no number that, >> > squared, equals -1. There is no number that, squared, equals -1. It's >> > not really there. >> >> depends on how people define "number". In math, it's usual to use an >> extended definition which isn't so limited as to forbid sqrt(-1) from >> existing. >> >> also, to understand the word "imaginary" in math, you have to first >> understand that its meaning is completely distinct from any meaning of >> "imaginary" outside of math. >> >> likewise for Real... "Real" is just a name. Small integers have a >> relatively high tangible quality to them, but it gets mostly downhill >> from >> there. "Real" numbers are arguably much less tangible than integer >> numbers, rational numbers, algebraic numbers, and then some. The numbers >> PI and E are a lot more tangible than almost all (100%) of the Real >> numbers. >> >> ____________________________________________________________________ >> Mathieu Bouchard - tél:+1.514.383.3801 - http://artengine.ca/matju >> Freelance Digital Arts Engineer, Montréal QC Canada >> > > > > -- > "It is not when truth is dirty, but when it is shallow, that the lover of > knowledge is reluctant to step into its waters." > -Friedrich Nietzsche, "Thus Spoke Zarathustra" > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list >

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Re: [PD] gui stuff
by megale 11 Nov '05

11 Nov '05

"To be honest, I didn't play around with flosc yet. Do you have an idea how flosc behaves performance-wise? I could imagine that running pd, flosc and the actual flash ui on the same machine could be quite slow ... and what about latencies?" I am just starting to use flosc, flashplayer, and pd together, and I didn't make any performances tests, but I suppose that flosc+flashplayer is taking less ressources than pd gui. Also I am working on a pure data project where objects are created and distroyed in a single patch, it doesn't work very well on winslows (the gui is stucking) but on linux it's very stable, I haven't finished that job but you can have a sight on it: https://pdradio.iem.at/Members/megalegoland/Rastaplayer-PD-0.39-1-XP.zip/fi… ___________________________________________________________________________ Appel audio GRATUIT partout dans le monde avec le nouveau Yahoo! Messenger TÃ©lÃ©chargez cette version sur http://fr.messenger.yahoo.com

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(no subject)
by megale 11 Nov '05

11 Nov '05

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Re: [PD] cumulative distribution?
by pete mcpartlan 11 Nov '05

11 Nov '05

cdf i think, when i said flat at both ends i meant horizontal. so yeah, an s curve not a bell curve- so yes cumulative gaussian distibution -i think... sorry to clog up the list with my mathematic incompetency, but how do i integrate the pdf? thanks pete Charles Henry wrote: >hold on...what kind of distribution are you looking for? the >expression is pdf for a probability density function that flattens out >at both ends. the cdf (cumulative density) is obtained by integrating >the pdf-this is the stretched 's' >Simulating random variables by the inversion method involves taking >the integral of your chosen pdf, and putting the values in a table. >Then you can pick numbers between 0 and 1 and look up the random >variable's value. So, what distribution do you want? > >Chuck > >On 11/9/05, pete mcpartlan <petemcpartlan(a)yahoo.co.uk> wrote: > > >>thanks Tebjan, >> >>but...its not half a cosine because it has to flatten out at both ends. >> >>and secondly i have no idea how to take an equation like that and >>implement that in pd... maybe i didnt explain that i'm not too good at >>all that maths stuff... >> >>thanks, >> >>pete >> >>Tebjan Halm wrote: >> >> >> >>>>>(cos(x) + 1) * c with x inside the range -Pi to 0 and c is a constant >>>>>that defines the output range of the curve 0 to c ... >>>>> >>>>> >>>sorry, the output range will be 0 to 2*c ... because the cos range -1 >>>to 1 >>>gets shifted upwards by the +1 to 0..2 and c scales this range ... >>> >>>pete mcpartlan schrieb: >>> >>> >>> >>>>hello, >>>> >>>>i need help with a maths problem... i am trying to plot a cumulative >>>>distribution curve to weight random. I have a [random] that feeds >>>>into a chain of [moses], sililar to the markov chain example but what >>>>i want to do is have a table dump into the right inlet of each moses >>>>changing the weighting. so far so good. what i need help with is the >>>>curve which needs to make it more likely for the next result to be >>>>near the same position. the attatched patch has an array with the >>>>sort of function it should be... like an s stetched at both ends... >>>>is there a way i can do this with expr? or am i going to have to type >>>>out a list for each state? i'm sure this is probably quite a simple >>>>maths problem... but beyond me... or other ideas? might it be simpler >>>>to have a longer array with the curve is then plotted at different >>>>points back into the array... but considering i'm probably going to >>>>have 16+ of these and other stuff i want to make it as simple as >>>>possible.... >>>> >>>>thanks in advance and apologies for rambling a bit.. >>>> >>>>pete >>>> >>>> >>>> >>> >>> >>-- >>~~~~~~~~~~~~~~~~~~~~~~~~~ >>www.140worthing.karoo.net >>=-=-=-=-=-=-=-=-=-=-=-=-= >> >> >> >> >>_______________________________________________ >>PD-list(a)iem.at mailing list >>UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list >> >> >> > > >-- >Charles Zachary Henry > >anti.dazed.med >Med student who needs a Mickey's > > > -- ~~~~~~~~~~~~~~~~~~~~~~~~~ www.140worthing.karoo.net =-=-=-=-=-=-=-=-=-=-=-=-=

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GUI freeze
by Chuckk Hubbard 10 Nov '05

10 Nov '05

First off, I apologize if this is a common topic; I couldn't hunt anything down in the archives, but I wasn't sure what search strings to use. Often, PD stops drawing numbers for me. I can click on a box and type in a number and see it, but if I scroll, it changes the value without showing me what it is. Once it starts doing this, it won't stop no matter what. It runs across all patches, too, even if I close all patches and reopen it won't draw the numbers. It also won't show the numbers for midi input when this happens. It does this very frequently, though I can't think of what I did just before it happened last time (a few minutes ago). Scalar drawing instructions still work fine regardless. Any ideas? -Chuckk -- "It is not when truth is dirty, but when it is shallow, that the lover of knowledge is reluctant to step into its waters." -Friedrich Nietzsche, "Thus Spoke Zarathustra"

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Building a counter problem
by Brad Kligerman 10 Nov '05

10 Nov '05

I just want to count : 0,1,2,3,4,0,1,2,3,4,0,1,2... by continuously hitting a bang. Can somebody tell me why this isn't working? Thanks, Brad.

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number to symbol
by timon 10 Nov '05

10 Nov '05

Hi, does anyone know if there is an object that converts a number (key number) to a symbol ? Cheers, Timon.

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ANN: dssi~ 0.4alpha available
by Jamie Bullock 10 Nov '05

10 Nov '05

Apologies for cross-posting. For the intrepid, there is a new version of my dssi~ external available at: http://www.puredata.org/Members/jb/dssi%7E/view Added: support for multiple plugin instances from a single dssi~ object. I say intrepid, because it is not at all finished, it is undocumented and is Linux only at the moment, although I do have an OS X version kicking about somewhere if anyone is interested. -- Regards, Jamie

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RE: [PD] sound controlled color change
by robertgarvin＠bellsouth.net 10 Nov '05

10 Nov '05

If you look inside the [pd] object in the main patch window, you'll see the VU meters.. I'm just not sure how to send those color messages -----Original Message----- From: Hans-Christoph Steiner [mailto:hans@eds.org] Sent: Wednesday, November 09, 2005 6:57 PM To: robertgarvin(a)bellsouth.net Cc: pd-list(a)iem.at Subject: Re: [PD] sound controlled color change That's quite a nice little patch. It'd be nice to turn the bang into a VU meter, with a smooth gradient of color based on amplitude. .hc On Nov 5, 2005, at 10:06 AM, <robertgarvin(a)bellsouth.net> wrote: > hello all, > I played around with PD for a while tonight, and came up with > something > I'd like to share.. nothing big, just something i think might be > interesting, and with improvement, would be really neat. > so here it is > > ----------------------------------------------------------------------- > ---------------------------------------------------------- > #N canvas 579 95 180 169 12; > #X obj 40 5 bng 100 250 50 0 empty color_2 click_me 20 49 0 8 -24198 > -262144 -262144; > #N canvas 141 6 405 670 Pd 0; > #X obj -37 -16 inlet; > #X obj 138 5 bng 15 75 50 0 empty color_2 10 3 8 0 7 -24198 -262144 > -262144; > #X obj 36 31 osc~ 440; > #X obj 37 68 *~; > #X obj 9 167 vu 15 120 empty empty -1 -8 0 8 -66577 -1 1 0; > #X obj 26 108 dac~; > #N canvas 0 22 794 185 mySigToVU 0; > #X obj 5 40 env~ 4096; > #X obj 5 71 - 97; > #X obj 5 10 inlet~; > #X text 80 73 <= offset the number for 0dB Max display; > #X text 79 42 <= output the RMS value; > #X text 247 65 comment; > #X text 100 53 of an incoming signal in dB; > #X obj 5 106 outlet; > #X obj 414 43 env~ 4096; > #X obj 414 74 - 97; > #X obj 414 13 inlet~; > #X obj 414 109 outlet; > #X text 78 12 <= Left input signal; > #X text 471 13 <= Right input signal; > #X text 83 108 <= send number to Left VU meter; > #X text 467 109 <= send number to Right VU meter; > #X connect 0 0 1 0; > #X connect 1 0 7 0; > #X connect 2 0 0 0; > #X connect 8 0 9 0; > #X connect 9 0 11 0; > #X connect 10 0 8 0; > #X restore 1 130 pd mySigToVU; > #X obj 76 164 vu 15 120 empty empty -1 -8 0 8 -66577 -1 1 0; > #X msg 137 23 1 10 0 \, 0 1000 10; > #X obj 135 47 vline~; > #X obj 8 308 abs; > #X msg -11 529 color \$1 0 0; > #X obj -10 560 s color_2; > #X obj -11 501 *; > #X obj -11 481 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1 > 1; > #X obj -65 382 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 > -1; > #X obj -11 460 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 > -1; > #X floatatom 8 384 5 0 0 0 - - -; > #X obj -11 436 delay 50; > #X obj 8 350 + 69; > #X obj -65 358 loadbang; > #X obj -93 411 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 > -1; > #X obj -92 429 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 > -1; > #X obj 145 345 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 > 1; > #X text 134 311 Click to start and stop; > #X text 140 360 [X] = on [ ] = Off; > #X connect 0 0 1 0; > #X connect 1 0 8 0; > #X connect 2 0 3 0; > #X connect 3 0 5 0; > #X connect 3 0 5 1; > #X connect 3 0 6 0; > #X connect 3 0 6 1; > #X connect 4 0 10 0; > #X connect 6 0 4 0; > #X connect 6 1 7 0; > #X connect 8 0 9 0; > #X connect 9 0 3 1; > #X connect 10 0 19 0; > #X connect 11 0 12 0; > #X connect 13 0 11 0; > #X connect 14 0 13 0; > #X connect 15 0 18 0; > #X connect 15 0 22 0; > #X connect 16 0 14 0; > #X connect 16 0 21 0; > #X connect 17 0 13 1; > #X connect 18 0 16 0; > #X connect 19 0 17 0; > #X connect 20 0 15 0; > #X connect 21 0 15 0; > #X connect 22 0 14 0; > #X connect 23 0 15 0; > #X restore 40 118 pd; > #X connect 0 0 1 0; > > > ----------------------------------------------------------------------- > ---------------------------------------------------- > let me know what you think (ie applications, improvements, comments, > etc.). > > RG > > > > _______________________________________________ > PD-list(a)iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > ________________________________________________________________________ ____ "Information wants to be free." -Stewart Brand

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Parameter query
by João Miguel Pais 10 Nov '05

10 Nov '05

Hello list, I am making an utility patch which will make it easier to edit parameters of gui objects (canvas, etc.). I wanted to ask, is there any possibility to query the current state of an object? To know how big/wide / what label it has? thanks as usual, joao -- Lugostr. 14 79100 Freiburg i. Br. Deutschland +49 (0)761 7074997 jmmmp(a)arcor.de

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Pd-list November 2005