Pd-list June 2014

pd-list@lists.iem.at

1 participants
82 discussions

Running external software from within a Pd external
by Jaime E Oliver via Pd-list 19 Jun '14

19 Jun '14

Hi, I am trying to figure out how to call and run an external software from within a Pure Data external. The specific case is that I have an external generating Lilypond scores, but I'd like the external to go further and open this score with the Lilypond software[1], compile the score and produce a pdf or ps document. All from within the same command in Pd. Any pointers? J [1] lilypond.org

3 5

udpreceive~/udpsend~ block size and broadcast streaming issues
by PH via Pd-list 19 Jun '14

19 Jun '14

Hello everyone, I had a question about udpreceive~ and udpsend~ objects from mrpeach externals. Here’s my problem: I’m running a simple iOS application with libpd and udpreceive~ objects in the patch. The audio is sent from a computer with udpsend~ object, with only one channel currently being used. Whenever I stream to a single IP address everything works fine with almost unnoticeable latency. However, when I try to broadcast to multiple addresses in the network (as shown in udpsend~ help patch), I get two kinds of errors: – On OS X, block size >= 512 triggers “Message too long (40)” error. It happens only on OS X (tried the same patch on ubuntu, and this error didn’t reappear), one of the possible solutions I found was to use smaller block size, but in such case it would cause the second kind of error – On a client I get "udpreceive~: bad header tag (1)” error with incrementing numbers in the error. At first, I thought the libpd implementation was to blame, but it also happened when I run the same send and receive patches on two different computers running Pd-extended and connected over a local wireless network. Is there any way to safely stream to multiple objects through one udpsend~ object? Also, what might be the source of bad header tag errors? Best regards, Bektur

1 0

Patching Circle At CRASH Space Los Angeles June 22nd
by Theron Trowbridge via Pd-list 19 Jun '14

19 Jun '14

We will be having a patching circle at CRASH Space in Los Angeles on Sunday June 22nd starting at Noon. CRASH Space is located at 10526 Vencie Blvd., in Culver City. (Map: https://www.google.com/maps/place/10526+Venice+Blvd/@34.0193142,-118.405255… ) Usual patching circle publicity text: A patching circle is an informal gathering of anyone who is interested in patching languages (Pure Data, Max/MSP/Jitter, etc.). Beginners and experienced patchers are welcome. Open to everyone – work on personal or professional projects, school work, or just patch quietly to yourself, in a room full of other people patching patches and helping other people patch. -Theron ^

1 0

exiting function in external
by Jaime E Oliver via Pd-list 17 Jun '14

17 Jun '14

Hi all, I am writing a long and complex external. There are several conditions in which a particular function could fail and in any of those cases I'd like to report the error and stop the execution of the function. I tried using the exit() function, but that quits pd, and what I really need is for the function to simply stop. Does pd have a function for doing this? best, J

3 2

Re: [PD] Linux audio dropouts when moving mouse over patch (was: Pd hangs after installing Digidesign sound card's driver)
by Federico Galland via Pd-list 17 Jun '14

17 Jun '14

> I have the same problem on my Archlinux x86_64 install, running vanilla and extended with jackd. The same thing happens on my debian install on the same laptop (Core2 T6400, 2GHz, 2MB L2 cache, 4GB RAM). > I don't live patch (yet), and found out that if you exit edit mode it works a little better (there's still the ocassional dropout). It should be cleared that I run jackd with the same config for far heavier realtime dps stuff (many plugins loaded in ardour, with realtime input) and that I've already tried increasing the frames in jackd's config. The dropouts do not make jackd report an xrun, and here is my ~/.pdsettings audioapi: 5 noaudioin: False audioindev1: 0 2 noaudioout: False audiooutdev1: 0 2 audiobuf: 100 rate: 48000 callback: 0 blocksize: 128 nomidiin: False midiindev1: 20 nomidiout: False midioutdev1: 65024 path1: /usr/local/lib/pd/extra/iemabs path2: /usr/local/lib/pd/extra path3: /home/fede/Documents/puredata path4: /usr/local/lib/pd/extra/zexy npath: 4 standardpath: 1 verbose: 0 loadlib1: iemlib1 loadlib2: iemlib2 loadlib3: iem_mp3 loadlib4: iem_t3_lib loadlib5: zexy nloadlib: 5 defeatrt: 0 flags: -rt -alsamidi -font-weight normal

1 0

Pd hangs after installing Digidesign sound card's driver
by Alexandros Drymonitis 17 Jun '14

17 Jun '14

I had to use a digidesign sound card so I installed the appropriate driver and tried to open Pd. For a couple of times it hanged and I had to force quit it, but the third time it opened. After a while I quit it and tried to reopen it and since then it just hangs. I uninstalled the driver (and its additional files in /Library/Application Support/Digidesign), restarted my laptop, but Pd still hangs. I tried to open it from the terminal with the -audiodev flag (tried number one as an argument, shouldn't that be the built-in audio?) but it still hangs. I'm on OS X 10.8.5 with Pd-extended-0.43.4 (BTW, typing this in the terminal works: /Applications/Pd-extended.app/Contents/Resources/bin/pd -version). What can I do about that?

4 4

Aquatic sounds with wah-wah?
by telmo bacile via Pd-list 16 Jun '14

16 Jun '14

Hi, im new in this list and im also new with puredata. A lot of years ago i was using a program called jeskola buzz for making sounds, this software is a modular software that allows to connect effect modules to sound generator modules. I used to create aquatic sounds connecting a harsh noise generator to a wah-wah and to a delay. I been trying to replicate these kind of sounds pd using the wah-wah from the help files, but the problem is that the resulting sounds are very different. So, i was wondering, Do anybody have an idea how can i create these kind of sounds in pd? how can i implement these type of wah-wah for creating aquatic sounds? I uploaded an example created in buzz.... any idea how to achieve this in pd? http://www.datafilehost.com/d/9bfab7ac thanks in advance Telmo

1 0

Raspberry Pi auto startup (no login)
by Joe Newlin via Pd-list 16 Jun '14

16 Jun '14

Hi List, There must be a straightforward answer to this, and it's not pd-specific, but I just can't find it: How do I configure my Raspberry Pi to not require a login so that I can just power up and have a working effects unit? Thanks, Joe -- www.joenewlin.net www.twitter.com/joe_newlin www.facebook.com/joenewlin.net ᐧ

3 4

Re: [PD] pitch to voltage
by Simon Iten 15 Jun '14

15 Jun '14

sorry this one went off-list :-) On 27 Apr 2014, at 19:05, simon <itensimon(a)gmail.com> wrote: > sure, > > here is the version with biquad in a subpatch with a block opject to upsample. probably i'm doing something wrong, i just copied from the block help-patch. > > <sinetosawtoothupsample.pd> > > On Apr 27, 2014, at 5:48 PM, Miller Puckette wrote: > >> Drat, I don't have any explanation for this... can you send me the patch >> again? >> cheers >> M >> >> On Sun, Apr 27, 2014 at 05:44:22PM +0200, simon wrote: >>> hmm, changing change to biquad does also not work. i mean it does as long as i don't upsample in the subpatch. as soon as i change the block object i get square instead of pulses... >>> >>> On Apr 27, 2014, at 3:48 PM, Miller Puckette wrote: >>> >>>> Actually I don't know where the change~ object is from - I've nver seen t >>>> before. I would just use biquad~ 0 0 1 -1 0 (assuming that change~ simply >>>> ubtracts the previous sample from teh current one as I guessed from the patch :) >>>> >>>> M >>>> >>>> On Sun, Apr 27, 2014 at 03:40:01PM +0200, Simon Iten wrote: >>>>> ok tried to upsample the whole thing (after the osc~) and now change~ does nothing anymore… it just spits out the same square wave i feed in…clues? >>>>> >>>>> >>>>> On 27 Apr 2014, at 13:05, Simon Iten <itensimon(a)gmail.com> wrote: >>>>> >>>>>> crosspost! sorry about the noise. thanks for the inputs i will try to to this. not sure if i can. otherwise i will ask back if that’s ok! >>>>>> On 27 Apr 2014, at 13:03, Simon Iten <itensimon(a)gmail.com> wrote: >>>>>> >>>>>>> so if i would measure at the peak of the sawtooth and would upsample inside the pd patch, i would get higher resolution, right? >>>>>>> >>>>>>> any ideas how i can measure at the peak? (using the rpole output on both samphold inputs does not work and delaying one of them is also not working) >>>>>>> >>>>>>> which >>>>>>> >>>>>>> i would highly recommend you try this method with your gk-3 equipped guitar (one for each string) since you only have to cover a two octave range per string the error is tolerable. (you can add an offset to make it fit) >>>>>>> On 27 Apr 2014, at 12:56, Miller Puckette <msp(a)ucsd.edu> wrote: >>>>>>> >>>>>>>> That is an excellent, witty way to measure pulse withs using >>>>>>>> only tilde obects - my hat's off to you. >>>>>>>> >>>>>>>> The methond only has limited accuracy since its measurement is in >>>>>>>> samples. For instance, a 1/2 cycle of a 440-hz. tone at 44.1 kHz is >>>>>>>> only 50 samples, so there's only 2% accuracy. That's about 1/3 of a >>>>>>>> half tone (30-ish cents) which would sound horribly out of tune. >>>>>>>> >>>>>>>> There's an alternative sine-to-sawtooth recipe described here: >>>>>>>> >>>>>>>> http://msp.ucsd.edu/Publications/icmc10.pdf >>>>>>>> >>>>>>>> This is the basis of my guitar processing patch, smeck, but should be more >>>>>>>> broadly useful. But it has its own limitations: the sawtooth you get out >>>>>>>> is wiggly if the input sn't a pure sinusoid. >>>>>>>> >>>>>>>> There's also the possibility of simply pitch tracking with sigmund~. Use >>>>>>>> a maximum frequency around 6000 and a maximum of 6 partals (default 50!) >>>>>>>> for best results. >>>>>>>> >>>>>>>> cheers >>>>>>>> M >>>>>>>> >>>>>>>> On Sun, Apr 27, 2014 at 11:27:33AM +0200, Simon Iten wrote: >>>>>>>>> dear list, >>>>>>>>> >>>>>>>>> i have a strange problem with my “sinetosawtooth” patch. >>>>>>>>> >>>>>>>>> it is basically a version of the pitch to voltage conversion used in the old gr300 guitar synths from roland. >>>>>>>>> >>>>>>>>> i cut out all the clutter to make it easier to look at and understand. (cut out the adaptive filtering at the input since i use a sine wave for this example and not a guitar string) >>>>>>>>> >>>>>>>>> here is how it works (or should): >>>>>>>>> >>>>>>>>> -an input signal gets amplified by a large factor and clipped. this squares the input. >>>>>>>>> >>>>>>>>> -the square wave is converted to pulses. >>>>>>>>> >>>>>>>>> -the pulses from the rising of the square wave are used to set and reset an accumulating filter (rpole~) >>>>>>>>> >>>>>>>>> this results in a sawtooth wave that varies in amplitude depending on the frequency of the input. >>>>>>>>> >>>>>>>>> -a sample and hold samples the peak of the sawtooth and holds it until the next peak occurs. this, after a conversion gives us the input frequency. yeah! >>>>>>>>> >>>>>>>>> in the example patch i used the falling edges of the square wave to trigger the sample and hold. this samples the sawtooth amplitude after half the rising. (this is also why i have 22050 in fexpr~ and not 44100) i could not figure out how to sample the peak of the sawtooth, so suggestions here are very welcome. >>>>>>>>> >>>>>>>>> now to the problem: >>>>>>>>> >>>>>>>>> the extracted frequency does not exactly correspond to the input frequency. it is pretty close at low frequencies but gets worse at higher frequencies. the factor is not constant. at even higher frequencies (around 5000 hertz) the reported frequency gets totally out of control. >>>>>>>>> >>>>>>>>> i first thought this is because the samphold~ object is inaccurate. but i then saw that the sawtooth wave from the rpole~ object has no constant amplitude even with the input frequency not changing. so it seems that either rpole~ or change~ is not accurate. >>>>>>>>> >>>>>>>>> or the problem is that i sample in the middle of the rising and not at the top ( as described earlier) >>>>>>>>> >>>>>>>>> attached the sinetosawtooth patch. set your sound card to 44100 or change the 22050 in fexpr~ to half the sampling frequency. >>>>>>>>> >>>>>>>>> i would really appreciate if somebody could have a look at this, >>>>>>>>> >>>>>>>>> thanks, simon >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> _______________________________________________ >>>>>>>>> Pd-list(a)iem.at mailing list >>>>>>>>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list >>>>>>>> >>>>>>> >>>>>> >>>>> >>> >

7 16

iemguts canvas delete method
by Jonathan Wilkes via Pd-list 15 Jun '14

15 Jun '14

Hi list, Iemguts has an object [canvasdelete] which, when you create it, goes in and adds a "delete" method for canvases. This allows you to send a "delete $1 $2 etc." message to a canvas, where "$1 $2 etc." are indices of objects you wish to delete from a particular canvas. In the code I see this comment: /* this will crash Pd if the object to be deleted is on the stack * workarounds: * - use a clock (see above) * - finally fix this in Pd */ 1) How do I use a clock? If the object no longer outputs in zero logical time, does that make certain use cases impossible? (If not maybe that's the way to go.) 2) How would you finally fix this in Pd without using a clock? -Jonathan

2 4

← Newer
1
2
3
4
5
6
7
8
9
Older →

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

Pd-list June 2014