[PD] UA-25 on RPI

Antoine Villeret antoine.villeret at gmail.com
Sat May 4 18:42:36 CEST 2013


ok bad news...

what about using another sound card ?
UGM6 has 2 hi-Z input (but without no phantom) and 2 outputs
it may fit your needs

+
a

--
do it yourself
http://antoine.villeret.free.fr


2013/5/4 Dan Wilcox <danomatika at gmail.com>

> Yes. Ethernet turbo disabled and Ethernet disabled. Disabled cpu freq
> scaling. Pd set with realtime permissions:
>
> sudo chmod 4755 /usr/bin/pd-extended
> sudo chmod 4755 /usr/bin/pd
>
> Setting dwc_otg.speed=1 dosen't work for this card and yields an unstable
> system.
>
> This is pretty disappointing as my old setup was on an embedded 500Mhz
> Celeron with half the RAM and almost no video memory, yet (so far) was
> running Pd + alsa better than the superiorly specced PI. The main reason
> I'm not using the wearable anymore is it's just worn out and trying to fix
> flexxed pcbs and the resultant random glitches was getting old years ago.
>
> On May 4, 2013, at 12:31 PM, Antoine Villeret <antoine.villeret at gmail.com>
> wrote:
>
> Hi dan,
>
> Did you try to disable Ethernet turbo or to disable Ethernet at all
> as describe on linuxaudio.org [1] ?
> it gives me good result with ESI sound card (UGM-6, see my post on the
> list from Thursday).
>
> Cheers
>
> a
> [1] http://wiki.linuxaudio.org/wiki/raspberrypi
>
> --
> do it yourself
> http://antoine.villeret.free.fr
>
>
> 2013/5/4 Dan Wilcox <danomatika at gmail.com>
>
>> For what it's worth, output did work using:
>>
>> pd-extended -nogui -noadc -audiooutdev 3 test.pd
>>
>> with 3 being the direct alsa interface as opposed to the alsa plug
>> interface.
>>
>> It's when I enable the audioindev that I get crackles. I know there are
>> people out there using the UA-25 + jack, but I never needed jack before
>> with an embedded setup.
>>
>> Part of the issue might be the RPI's real-time kernel. My old wearable
>> setup was far more unstable with a realtime kernel and using a regular
>> kernel with realtime permissions for PD worked far better.
>>
>> On May 4, 2013, at 11:52 AM, Miller Puckette <msp at ucsd.edu> wrote:
>>
>> HI Dan -
>>
>> I tried and got even less far than you apparently did, and gave up.  It's
>> too
>> bad - the UA 25 is the best USB-powered interface I've found so far.  For
>> the
>> Pi I now use small, cheap, recent-vintage ones like the Griffin iMic. (but
>> there are even cheaper ones :)  If you have low-impedance mics, my best
>> guess would be to use an impedance matching transformer (lo to hi) and
>> then
>> a "PC mic" (high impedance) interface.
>>
>> cheers
>> M
>>
>> On Sat, May 04, 2013 at 10:57:35AM -0400, Dan Wilcox wrote:
>>
>> Howdy everyone,
>>
>> Anyone had luck with a Roland/Edirol UA-25 with PD on a RaspberryPi? I've
>> gotten it working fine with output, but enabling input gives me crackles
>> and bad cpu usage. Ideally, I want 2 in / 2 out and this audio interface
>> has worked wonderfully with Linux on older/slower machines in the past. The
>> RPI should have no problem spec-wise to run this with PD using only alsa ...
>>
>> --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>>
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>>
>>
>>  --------
>> Dan Wilcox
>> @danomatika
>> danomatika.com
>> robotcowboy.com
>>
>>
>>
>>
>>
>>
>> _______________________________________________
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>>
>
>  --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
>
>
>
>
>
>
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