[PD] udoo board sound issues

Thu Mar 13 05:19:45 CET 2014

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
>
>
>
>
>
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>
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
>
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
>
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-- 
Richie

www.glitchpop.com
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