[PD] udoo board sound issues

Mon Mar 24 15:43:46 CET 2014

hey dan and list,

i gave pd on the debian hardfloat image a try and can not run it. it
compiles just fine. this is what i get on the console...

debian at udoo-debian-hfp:~$ pd -verbose
Pd-0.45.4 ("") compiled 14:17:43 Mar 24 2014
port 5400
TCL_LIBRARY="/usr/local/lib/pd/lib/tcl/library"
TK_LIBRARY="/usr/local/lib/pd/lib/tk/library"   wish
"/usr/local/lib/pd/tcl//pd-gui.tcl" 5400
Waiting for connection request...
/usr/local/lib/pd/bin/pd-watchdog
watchdog: signaling pd...
watchdog: signaling pd...
watchdog: signaling pd...
watchdog: signaling pd...
watchdog: signaling pd...

then a watchdog-signaling loop...

this also happens with the version installed via synaptic.

any thoughts?

cheers

On Sat, Mar 15, 2014 at 4:50 PM, Dan Wilcox <danomatika at gmail.com> wrote:

> Yeah, I wanted to use the hard float image but I was under time pressure
> and more things seemed to work out of the box with the Linaro one. I'll
> have more time to revisit it later.
>
> On Mar 15, 2014, at 12:46 PM, Simon Iten <itensimon at gmail.com> wrote:
>
> hmm,
>
> well to me 12ms is way to much. but then again i play a lot of fast attack
> notes in up-tempo pieces :-)
>
> thanks for your notes anyway, they helped a lot! and write back when you
> tried with the debian hardfloat image. i tried it for a short time and it
> was not very stable with pd. but then again i did not try a lot of things
> to fix this.
>
> cheers
> On 15 Mar 2014, at 13:10, Dan Wilcox <danomatika at gmail.com> wrote:
>
> Check this page:
> http://www.michalkaszczyszyn.com/en/tutorials/latency.html#acceptable
>
> I was wrong, the guitar to amp latency at 1 meter away is roughly 3 ms.
>
> The accumulation of a monitors and an effect or two gets you to 8ms.
> Acceptable latency is 12 ms.
>
> Again, I haven't measured my rig or the latency of my old wearable rig,
> both both were responsive to me, so they must e at least around 12 ms.
>
> Sorry for being unscientific about it.
>
> enohp ym morf tnes
> --------------
> Dan Wilcox
> danomatika.com
> robotcowboy.com
>
> On Mar 15, 2014, at 5:49 AM, Simon Iten <itensimon at gmail.com> wrote:
>
> dan, no 15 ms is in no way tolerable for live use (if you have effects
> that should react in realtime) it is of course ok for delay and reverb
> stuff. the latency from an amp because of cable length and stuff is totally
> different, since your ear actually hears where the sound comes from and can
> adapt.
> but for studio use for example, 15 ms on a headphone is really two attacks
> for evey attack. heck even 10ms is evil :-) of course your/anyones mileage
> may vary. but i only wanted the box to output delay and reverb soundscape
> stuff away, so i might be good. i will add analog circuitry that mixes the
> dry and effect part of the signal, so i get no (very very little) latency
> on the unaffected part of the signal.
>
> no worries as far as the script goes. i had no problems at all to follow
> it. but i worked with linux a lot before. i was just suggesting, that the
> typical ubuntu user would not get some of the steps in between your steps
> :-)
>
>
> On 15 Mar 2014, at 02:10, Dan Wilcox <danomatika at gmail.com> wrote:
>
> I haven't run any latency tests, so that might be what I'm getting. If so,
> it's acceptable for what I do. From what I've read, guitar -> effects ->
> amp latencies are already closer to 20ms.
>
> Sorry I haven't gotten back to the UDOO and pulled the relevant scripts
> etc off of it yet. I'm trying to get a few things done before I head out of
> town for work the next 2 weeks. I might be abel to get to it Sunday, but no
> promises.
>
> On Mar 14, 2014, at 8:41 PM, Simon Iten <itensimon at gmail.com> wrote:
>
> hi dan,
>
> tried your setup/instructions. thanks, it now works down to 15ms. at 12ms
> i start to get clicks here and there...
>
> your script has some "errors" (missing instructions a novice would not
> understand how to deal with). do you want me to post them, or do you overdo
> it anyway?
>
> thanks again
>
> simon
>
> On 13 Mar 2014, at 05:21, Dan Wilcox <danomatika at gmail.com> wrote:
>
> Thanks. I was just waiting to redo my website, edit the video, put the
> pics together, etc etc but life and freelance work get in the way. Man, I
> could use a clone right about now :P
>
> On Mar 13, 2014, at 12:19 AM, Richie Cyngler <glitchpop at gmail.com> wrote:
>
> Also interested in the UDOO setup instructions so thank you. A bit OT but,
> Dan, love your work (that "onward to mars patch" is awesome) thanks for the
> links. I think people should post more of this sort of thing to the list,
> celebrate what we make. =)
>
>
> On Thu, Mar 13, 2014 at 11:09 AM, Dan Wilcox <danomatika at gmail.com> wrote:
>
>> FWIW: here's a picture of my UDOO setup inside my Mars space suit
>> backpack: http://www.flickr.com/photos/danomatika/13115604285/
>>
>> Media of the backpack in use
>> https://twitter.com/danomatika/status/433273394122207232/photo/1 &
>> https://vimeo.com/86670103 (not my video, I'll put out a different edit
>> soon)
>>
>> On Mar 12, 2014, at 10:28 AM, Dan Wilcox <danomatika at gmail.com> wrote:
>>
>> I will do that later tonight when I boot the udoo and pull my run scripts
>> off of it. I'll post everything to GitHub so we can share resources.
>>
>> On Mar 12, 2014, at 5:44 AM, Jamie Bullock <jamie at jamiebullock.com>
>> wrote:
>>
>>
>> Hi Dan,
>>
>> Thanks for sharing these notes. They arrived in my inbox to coincide
>> nicely with the delivery of my quad Udoo this morning! It would be great to
>> see a full writeup of your Udoo setup at some point as I think many people
>> will want to be doing a similar thing.
>>
>> All best,
>>
>> Jamie
>>
>>
>> On 11 Mar 2014, at 14:14, Dan Wilcox <danomatika at gmail.com> wrote:
>>
>> Heres a trim of my notes:
>>
>> Enable realtime audio priority (if you haven't done it already):
>>
>> sudo su -c 'echo @audio - rtprio 99 >> /etc/security/limits.conf'
>>   sudo su -c 'echo @audio - memlock 250000 >> /etc/security/limits.conf'
>>   sudo su -c 'echo @audio - nice -10 >> /etc/security/limits.conf'
>>
>> I disable pulseaudio. Make sure pulseaudio does not respawn itself (from
>> http://voices.canonical.com/david.henningsson/2012/07/13/top-five-wrong-ways-to-fix-your-audio
>> ):
>>
>>     echo autospawn=no > ~/.pulse/client.conf
>>
>> Also add the following to ~/.bash_login to kill pulse audio if it's
>> running on login:
>>
>>     # kill pulse audio if it was spawned
>>     pulseaudio -k
>>
>> I'm not looking at the udoo run script, but I'm pretty sure I'm using the
>> following with the US-25EX USB soudcard:
>>
>> pd -rt -nogui -alsa -audiodev 5
>>
>> Use pd -listdev to get the device list from alsa. I chose 5 as the first
>> 4 (from memory) are 1-2 (built in hardware & plugin) & 2-3 (HDMI audio
>> hardware & plugin). 5 is the USB hardware alsa dev.
>>
>> On Mar 11, 2014, at 4:05 AM, Simon Iten <itensimon at gmail.com> wrote:
>>
>> without jack i should add...
>> On 11 Mar 2014, at 08:55, Simon Iten <itensimon at gmail.com> wrote:
>>
>> hey dan,
>>
>> unfortunately i'm in switzerland :-)
>>
>> would be great if you could post your setup somewhere or send the infos!
>> i compiled pd from source as well. i start it from console (with -rt) and
>> it works without problems with the builtin sound card. maybe the cheap card
>> from dx.com just does not work properly with udoo.
>> but please post your setup.
>>
>> thanks
>>
>> On 09 Mar 2014, at 22:26, Dan Wilcox <danomatika at gmail.com> wrote:
>>
>> I've tried my both Roland Edirol UA-25 & UA-25EX and both work great. The
>> dedicated USB controller makes these guys work as compared to an RPI where
>> I can't get full duplex without tons of dropouts. I'm using a Linaro
>> install which boots to the console and runs the PD through scripting. The
>> speed is great as compared to my old wearable computer. 4 cores makes a
>> difference.
>>
>> I had to recompile my kernel to add midi support, but that's working
>> great. It's not too bad, actually. I also built Pd-vanilal from source
>> which was pretty easy using ./configure + make. I also have a script which
>> fetches externals and builds/installs the agains vanilla so I have the few
>> externals I need.
>>
>> As with my previous experience running Pd + embedded Ubuntu, I get great
>> performance with RT permissions, the -rt startup flag, and ALSA. Jack is
>> needless overheard unless you want to work with other Jack-enabeld apps.
>> Same with X windows, although my setup was running great in X with pd +
>> ALSA in testing.
>>
>> From your description, it sounds like your main issue is jack & pd are
>> probably not running in realtime.
>>
>> I can sent you my install notes if you want (or put them online, as I've
>> been meaning to). Also, are based in the NE within driving distance to
>> Pittsburgh? We could do a patching circle/UDOO setup afternoon :D
>>
>> On Mar 9, 2014, at 5:14 PM, pd-list-request at iem.at wrote:
>>
>> *From: *Miller Puckette <msp at ucsd.edu>
>> *Subject: **Re: [PD] udoo board sound issues*
>> *Date: *March 9, 2014 at 5:07:54 PM EDT
>> *To: *Simon Iten <itensimon at gmail.com>
>> *Cc: *PD list <pd-list at iem.at>
>>
>>
>> H iSimon -
>>
>> I haven't tried any but the built-in yet but I have a few USB interfaces
>> around here that I can try.  I'm about to go on an intense trip but should
>> be able to do some tests when I get back, assuming nobody else has figured
>> this out first.
>>
>> cheers
>> Miller
>>
>> On Sun, Mar 09, 2014 at 09:57:45PM +0100, Simon Iten wrote:
>>
>> hey list,
>>
>> does anybody that uses an udoo board have any recommendations on a
>> usb-soundcard? should be very compact.
>> i tried a cheap one from dx and i could not get any good results (loads
>> of xruns even with periods 3 and 1024 and up frames in qjackctl) this is on
>> the ubuntu version from udoo.
>> are there some tweaks i can do to improve usb-sound capabilities? i
>> thought maybe recompile the kernel with only usb-1 support since there is
>> no option as on the pi to disable usb-2 via config, or am i missing
>> something?
>> is it better to use the usb-soundcard without jack (pd does not like the
>> usb-soundcard either when i tried briefly)?
>>
>> the internal sound-input is to noisy for my application (guitar effect)
>>
>> cheers.
>> _______________________________________________
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>>
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>>
>>
>>
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>> _______________________________________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management ->
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>>
>>
>>
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>>
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>>
>> _______________________________________________
>> Pd-list at iem.at mailing list
>> UNSUBSCRIBE and account-management ->
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>>
>>
>
>
> --
> Richie
>
> www.glitchpop.com
>
>
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
>
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
>
>
>
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
>
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