Re: [PD] [OT] Pd to play sounds simultaneously on 8 speakers with cheap computer

2014-04-01 Thread Winfried Ritsch
Just started some docu on puredata.info especially for BBB (to be updated next 
week with new mor up to date reports).

 http://puredata.info/docs/embedded/

 http://puredata.info/docs/embedded/bbb/sound/

cheapest 8 channel USB sound-device I know of and working: Logilink 7.1.

Cutting the power of the USB cable, adding a filtered powersupply helps for 
the sound quality which is quite the same  as the ESI card for unsymmetrical 
DAs

Testing and feedback is appreciated.

mfg
 winfried



Am Sonntag, 30. März 2014, 20:45:28 schrieb Jack:
 Le 29/03/2014 15:43, Simon Wise a écrit :
  On 29/03/14 22:56, Jack wrote:
  Hello,
  
  Is it possible to use BeagleBoard, Raspberry Pi, Udoo or others without
  dropout with this configuration :
  
  8 IR sensors
  1 BeagleBoard (or Raspberry Pi, or Udoo or others) with Pd and linux
  1 sound cards with 8 output
  8 speakers
  
  like this : 8 IR sensors -  Beagleboard -  sound card -  8
  speakers (so
  it is possible to play 8 sounds at 44100 Hz 16 bits *simultaneously*).
  
  If yes, can you tell me which model of sound card works well with these
  cards ?
  Thanx.
  ++
  
  The esi gigaport hd+ is said to give 8 outs cleanly on an Rpi, search
  the list for reports from several people, but I have not tried it myself.
  
  With an Rpi you might then use the GPIO for your IR, but if the IR
  stuff is USB then you'd have to test, and may well be out of luck. A
  cheaper sound card and a more expensive computer may be just as
  sensible though.
  
  
  Simon
  
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 Thanx for this info Simon.
 I dug a little bit about this sound card and found that :
 https://www.mail-archive.com/pd-list@iem.at/msg57554.html
 http://puredata.info/docs/raspberry-pi/FrontPage
 in french : http://saillant.pierrick.free.fr/?p=30
 
 Other sound cards with 8 outputs ?
 ++
 
 Jack
 
 
 
 
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Re: [PD] [OT] Raspberry Pi Wolfson Audio Card

2014-03-21 Thread Winfried Ritsch
Am Freitag, 21. März 2014, 09:04:00 schrieb Simon Iten:
 hi, nice! one question:
 
 On 18 Mar 2014, at 12:02, Winfried Ritsch rit...@iem.at wrote:
  Am Donnerstag, 13. März 2014, 16:01:20 schrieb Rafael Vega:
  Anyone wants to share their experience with the BeagleBoneBlack?
  
  Yes.
  
  Since autumn, i am trying to set up an kit hardware+software with BBB for
  computer-musicians as stomp box, works quite well, after successfully
  installed it in a long term sound installation (headless):
  
  some points short:
  
  system:
  + BBB moved to Debian since this year (good)
  + USB Audio works fine und better now with kernel = 3.12
  + Network performance works better with kernel = 3.12
  - IO support doenst use device-tree overlays anymore on kernel  3.8
  + an iio-backend for Jack2 to use the internal AD's
  
in jack for processing sensor data in PD ;-)))  but tricky
 
 does this mean, we get a “sound” i.e adc~ in from the internal ad’s?
 
yes, so we use PD dsp-objects to process the data. but samplerate can be 
different.

mfg
 winfried


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Re: [PD] [OT] Raspberry Pi Wolfson Audio Card

2014-03-19 Thread Winfried Ritsch


Am Mittwoch, 19. März 2014, 00:24:25 schrieb Simon Wise:
 On 18/03/14 22:02, Winfried Ritsch wrote:
  Am Donnerstag, 13. März 2014, 16:01:20 schrieb Rafael Vega:
  Anyone wants to share their experience with the BeagleBoneBlack?
  
  Yes.
  
  Since autumn, i am trying to set up an kit hardware+software with BBB for
  computer-musicians as stomp box, works quite well, after successfully
  installed it in a long term sound installation (headless):
  
  some points short:
  
  system:
+ BBB moved to Debian since this year (good)
 
 that is very good to hear!
 
 and the rest means they seem a good choice for embedded, the USB
 implementation on the Pis really is a pain,and means you need to be
 very selective about what you try to do.
 
it is also not very clean on others, but improved.

I have never tested a Pi, which kernel version does you use, since there have 
been updates on USB since 3.12

mfg 
 winfried


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Re: [PD] [OT] Raspberry Pi Wolfson Audio Card

2014-03-18 Thread Winfried Ritsch
Am Donnerstag, 13. März 2014, 16:01:20 schrieb Rafael Vega:
 Anyone wants to share their experience with the BeagleBoneBlack?

Yes.

Since autumn, i am trying to set up an kit hardware+software with BBB for 
computer-musicians as stomp box, works quite well, after successfully 
installed it in a long term sound installation (headless):

some points short:

system:
 + BBB moved to Debian since this year (good)
 + USB Audio works fine und better now with kernel = 3.12
 + Network performance works better with kernel = 3.12
 - IO support doenst use device-tree overlays anymore on kernel  3.8
 + an iio-backend for Jack2 to use the internal AD's 
   in jack for processing sensor data in PD ;-)))  but tricky

sound:

 + down to 10ms with PD and cheap 8 channel out, 2 in 
   USB soundcard Logilink 7.1(EUR 19.90) 
 +  5ms with Logilink stereo USB (EUR 3,90) 
 + success with audio-cape (stereo, but too expensive for the quality)
 - sound quality is normally as bad as on most notebooks, tablets and so on 
 + but with a trick: filtered 5V supply for the USB-card not the USB power
   it seems to get reasonable quality 
   (They have all the same chips like expensive USB cards: C-Media)

I just made a blog on this, but it is not public only for intern usage, if 
anyone is interested in the IEM-embedded-Sound-Kit (doing some audio over 
ethernet stuff) i can make it open (after some polishing, especially the 
english) and release the PD-lib (GPIO,AD,I2C,... interfacing) for these 
devices.

This dev's should also work for Cubie-boards, Wand-boards, UDOO and other arm 
based boards.

mfg 
 winfried

PS: Maybe we can start an own thread on this.


 
 On Thu, Mar 13, 2014 at 3:11 PM, Brian Fay ovaltinevor...@gmail.com wrote:
  While I'm sure that Dan is right that the UDOO is the better choice for
  USB audio, I do have to say that I've had decent success using my
  Raspberry
  Pi as a guitar effects processor, with the Behringer UCG102 interface.
  
  There's definitely a lot of quirkiness to getting it running... for
  example ALSA gets in an infinite restart loop when attempting low latency
  on pd-extended, but vanilla starts up fine under the same settings. And
  then there's the fact that an issue in the kernel screws up USB audio on
  major distros like Raspbian.
  
  I'm using the Satellite CCRMA distro right now with much better success.
  So far I've got various delays, a looper, and a waveshaper distortion
  running within the same patch, at 20ms latency with very few noticeable
  dropouts. Parameters are adjustable with a QuNeo MIDI controller and with
  a
  button attached to the GPIO pins.
  
  The Pi is a bit more affordable than the UDOO boards, but then again I had
  to buy a powered USB hub. Ultimately for one audio input the Raspberry Pi
  could probably serve most purposes, while the UDOO is more likely to scale
  to bigger installations.
  
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[PD] Sorry, Puredata.info was down and is up again !

2009-07-19 Thread Winfried Ritsch
Because of a big thunderstorm and floodings in Graz, this happens only each 
100 years once, they said in the news, puredata.info server and mailinglist 
servers have been down.

They are  up again and we are sorry for any delay in information distribution 
and we are hoping the situation stays stabil.


mfG 
  winfried ritsch

PS: So, everybody at the puredata-convention in brazil, we wish you a happy 
meeting and greetings from graz.
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[PD] [OT] Jobs: PhD fellowship in Spatial Audio and Signal Processing

2008-11-25 Thread Winfried Ritsch
Hello,

sorry for off-topics, but maybe somebody interrested in.

Kategorie: Jobs
Titel: PhD fellowship in Spatial Audio and Signal Processing
Verfasser: Brigitte Bergner (IEM)
Contact: office _at_ iem.at
___

The Institute of Electronic Music and Acoustics group of University of
Music and Dramatic Arts Graz, Austria invites applications from outstanding
investigators for a PhD student fellowship to contribute and take part of
the Advanced Audio Processing Project. This project is founded by the
“Österreichische Forschungsförderungsgesellschaft (FFG).
Advanced Audio Processing (AAP) is a consortium built on three
internationally successful audio research groups at Graz University of
Technology (TUG), University of Music and Dramatic Arts Graz (KUG) and
Joanneum Research (JR), and three internationally active and successful
Austrian companies (AKG Acoustics, Atronic Austria and Philips Speech
Processing). The scientific partners are considered as the most important
Austrian research groups in the field of advanced audio processing. They
have many years of experience and will now bring together their
competencies to build an “audio processing expertise center” in Graz. The
industry partners of the consortium are among the most important companies
in Austria that implement top-level audio expertise within their products.

We are looking for post-graduates who have already profound knowledge in
digital signal processing. The applicant will operate within the field of
spatial audio processing and perceptual audio evaluation. Therefore besides
comprehensively programming skills in MATLAB, C and Pure Data (PD)
knowledge within psycho acoustics is necessary, too.
Further required abilities should comprise experience with experimental
design, self management, ability to work in a team, and the proof of
scientific paper writing.

CV and publication:

Applicants should provide a CV with relevant publications to
'[EMAIL PROTECTED] target=_blank target=_blank’ before 12th of
December 2008. Decision will be taken on the 19th of December. The annual
salary for the proposed fellowship amounts to 33 600 EUR (gross income).
The proposed position within this AAP project is planed for a period of 2
years.

Profile:
---
Candidates with a diploma degree in signal processing and experience in
spatial audio and psycho acoustics (if possible, also with knowledge in
experimental set-up design for perceptual audio evaluation) are searched
for.


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Re: [PD] wavelet

2008-10-31 Thread Winfried Ritsch
Hello,

its unter sourceforge subversion 

http://pure-data.svn.sourceforge.net/viewvc/pure-data/trunk/externals/creb/modules/

checkout: 
svn co 
https://pure-data.svn.sourceforge.net/svnroot/pure-data/trunk/externals/creb 
creb 

mfg winfried

Am Friday 31 October 2008 09:05:12 schrieb Jaime Oliver:
 Hello all,
 I am starting to look at Raul Diaz Poblete's wavelet's stuff and couldn't
 find the c code for the dwt~ or idwt~. Is this available too?

 best,

 Jaime



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[PD] was Re: Wii remote controller and Linux - Sony SIXAXIS now.

2008-05-06 Thread Winfried Ritsch
Hello,

I think he means the Sony SIXAXIS controller, which can be read with hid 
external.

mfg winfried
 
  Does anybody know if the acceleration data is also transmitted using
  the HID standard with the SIXAXIS Controller under Linux ? If I check
  the events with cat /dev/input/js0 I get only information about the
  buttons...

 I'm not sure why you would want to do it that way. I have an external
 ready which outputs acceleration data too. You can find it at
 http://youngmusic.org/wiki/index.php/Wiilib

 It should work ok, only some extentions like the classic controller are
 not ready yet, but i'm working on that.

 Regards,

 yvan


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Re: [PD] Alternate Controllers

2008-03-20 Thread Winfried Ritsch
dont forget the algopic: 
  https://algo.mur.at/data/projekte/algopic/
for Autoklavierspieler ;-) used serial-interface for better timing,
this was the reason for (comport - external).

mfg winfried

PS: just designing a new one with ethernet, since timing is criticalm, open 
hardware of course.


Am Mittwoch, 19. März 2008 16:15:58 schrieb Jean-Noël Montagné:
 Don't forget one of the cheapest interface, the USB Bit Whacker
 DIY, http://wiki.dataflow.ws/Interaction/Interfaces/UBW
 official web http://greta.dhs.org/UBW/index.html
 and sold 19 $ at sparkfun = 12 euros


 and the GNUSB http://gnusb.sourceforge.net/hardware/

 the USBDUX http://www.linux-usb-daq.co.uk/

 the ethernut http://www.ethernut.de/en/index.html

 the DLP IO
 http://apple.clickandbuild.com/cnb/shop/ftdichip?op=catalogue-products-null
prodCategoryID=65title=DLP-IO8-G

 the ispsonlab and co http://www.koncon.nl/ipsonlab/

 the AID http://www.student.ocad.on.ca/~aid_dev/?q=

 the artjoy http://artjoy.narod.ru/eng/index_eng.html

 the semifluid projects http://www.semifluid.com/?p=21#more-21

 the CUI http://www.create.ucsb.edu/~dano/CUI/

 the gadgetboard http://www.lunkwill.org/gadgetboard/index.html

 the nuxie1 http://www.nuxie1.com/guides/hackaday-competition-entry.html

 the USBAD http://www.bmcm.de/us/pr-usb-ad.html

 the midiscarff
 http://tomscarff.tripod.com/anal2midi/analogue_inputs_to_midi_out.htm

 the CV to midi http://www.fredrikolofsson.com/pages/hardware.html

 the interface-z http://www.interface-z.com


 and many others...  I have collected about a
 hundred different low cost interfaces links for
 interactive creation for the CRASlab activities,
 and I would really like to have the power to
 compare and document all this interfaces in terms
 of cost per input/ouput, open hardware, latency,
 protocols, DIY possibility and time, components
 availibility in the world, recycling, power
 cunsumption, etc, to complete
 http://www.sensorwiki.org/index.php/Sensor_interfaces

 but we have just money for making one USB Bit
 Whacker, wich is one of the best !

 JN



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Re: [PD] pd and 64bit Linux again

2007-08-18 Thread Winfried Ritsch
Am Freitag, 17. August 2007 17:41 schrieb Miller Puckette:
 d'oh... no such tools in Pd.  (Was there suc ha thing in Max/FTS?  I don't
 remember it :)

maybe its to long ago, but I thought in max/fts you could print out a time of 
operation of each object in the dsp-stack over an amount of ticks on the 
console, but maybe I am wrong and only we did it an IEM to track down 
DSP-efficiency.

mfg winfried
 cheers
 M

 On Fri, Aug 17, 2007 at 11:07:08AM +0200, Winfried Ritsch wrote:
  Hello,
 
   I've been getting various real-time problems too, but I'm not sure
   whether to blame the new Pd version, or the 64-bit kernel, or the new
   machines I'm running it on.
  
   Just to make things one bit more compicated, I've updated the included
   version of portaudio and added optional callback scheduling too --
   I'll probably upload changes to CVS after another day or so of testing.
 
  just found out that afeter 2hours and more, netconnections between
  GUI-Instance and PD-DSP become notible long ( 300ms), maybe the
  networking ?
 
  But since one rule is, never guess, measure why, I have a quick question.
  Is there a profiling tool on oject or message base ? I can remember there
  was one in Max/FTS, so I can find out the bad objects... ?
 
 
  mfg winfried
 
   cheers
   Miller
  
   On Thu, Aug 16, 2007 at 11:25:17AM +0200, Winfried Ritsch wrote:
Am Donnerstag, 16. August 2007 03:59 schrieb Malte Steiner:
 Miller Puckette wrote:
  I think most of the 64-bit bugs only got cleaned up for 0.41 (and
  the test version in CVS is pretty stable at the moment)

 ok, I give it a try tomorrow and post back here.
 Thanks for the info,
   
 just run 0.41 on 64studio 64 bit and a complex patch (CUBEmixer)
just run fine. But the disk access makes a DAC-slip on the 2.6.22
realtime kernel, much worse than on non-realtimekernel. Is there
anything to adjust on the kernel site to get better disk access
scheduling ?
   
mfg winfried
   
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Re: [PD] pd and 64bit Linux again

2007-08-16 Thread Winfried Ritsch
Am Donnerstag, 16. August 2007 03:59 schrieb Malte Steiner:
 Miller Puckette wrote:
  I think most of the 64-bit bugs only got cleaned up for 0.41 (and the
  test version in CVS is pretty stable at the moment)

 ok, I give it a try tomorrow and post back here.
 Thanks for the info,

 just run 0.41 on 64studio 64 bit and a complex patch (CUBEmixer) just run 
fine. But the disk access makes a DAC-slip on the 2.6.22 realtime kernel, 
much worse than on non-realtimekernel. Is there anything to adjust on the 
kernel site to get better disk access scheduling ?

mfg winfried

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Re: [PD] Subject: PureData Convention Papers Abstracts due soon

2007-04-16 Thread Winfried Ritsch
Am Sonntag, 15. April 2007 10:58 schrieb Andrew Brouse:
 Hello PDers,

 This is just a gentle reminder that abstracts are soon due for those who
 wish to present papers at PDCon 2007.

 I know there are lots of interesting things going on out there, so please
 do share with your colleagues!

 All it takes is a 1 page (max) abstract right now. If accepted, you then
 have until June 30 to finish the paper.

thanx, 
 shouldnt be the dates be updated on the webpages like:

 Guidelines with updated templates are here:
 http://www.puredata.org/community/projects/convention07/guidelines#papers


so poeple can read it. I found three different dates for paper upload.

mfg winfried


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