[PD] Raspberry Pi USB2 audio fixed (apparently)

Thu Jul 4 09:33:53 CEST 2013

OK.
For your information, pulseaudio doesn't come with the new version of
Raspbian apparently (I couldn't remove it cause it wasn't there !). No idea
why.
Pd seems to work a little bit with my soundcard, but after a couple of
seconds everything freezes. I'll try with no gui in the coming days.
Cheers,

Pierre.

2013/7/3 Julian Brooks <jbeezez at gmail.com>

>
> 'off Millers site' not 'of'
>
> And also another thing with the power supply.  Although 1a is supposed to
> be fine 2a actually works really well if you're driving any peripherals,
> giving plenty of overhead.
>
> J
>
>
> On 3 July 2013 14:31, Julian Brooks <jbeezez at gmail.com> wrote:
>
>> Hey Pierre,
>>
>> I've installed Pd from the pre-compiled version of Millers site, and most
>> recently built it from source which took a bit more doing but Miller very
>> kindly walked me through the tricky bits (thread in archives "installing Pd
>> from source on rpi" should bring it right up).  The version from the repo's
>> works just fine but I wanted to test out (though didn't end up making use
>> of) [gpio] which requires 0.44 or later.
>>
>> I got the power supply from here:
>>
>> https://www.modmypi.com/5v-2A-modmypi-raspberry-pi-power-supply?filter_name=power%20supply
>>
>> The soundcard I've been using the most (ESI UDJ - thanks Antoine:) has no
>> audio input so no good info on full duplex.  I've been messing around with
>> the imic running duplex (with usb-slowdown) and had been getting reasonable
>> results (10-12ms) but running pretty light patches.  Sorry can't be more
>> precise as I haven't given this card as much attention.
>>
>> Regards,
>>
>> Julian
>>
>>
>>
>> On 3 July 2013 11:06, Pierre Massat <pimassat at gmail.com> wrote:
>>
>>> Hi Julian,
>>> This Moebius distro looks very interesting. Can you please tell us how
>>> you installed Pd ? From the Raspbian repos ?
>>> Have you tried it with full duplex with your soundcard yet ? What
>>> latency are you getting (I can't get below 15 ms in Raspbian with some fft
>>> in my patch) ?
>>>
>>> Also is this think about the power supply true ? They mention it too on
>>> the Satellite CCRMA webpage. Where can I buy a power cable that outputs 5.2
>>> V ? I'm currently using a samsung smartphone charger.
>>>
>>> That's a lot of questions but you made me curious (and hopeful again) !
>>>
>>> Cheers,
>>>
>>> Pierre.
>>>
>>>
>>> 2013/7/3 Julian Brooks <jbeezez at gmail.com>
>>>
>>>> I'm having good results from using a much leaner install - it's called
>>>> Mobius:
>>>> http://moebiuslinux.sourceforge.net/
>>>>
>>>> Obviously depends on your usage but I'm ssh'ing into the pi and works
>>>> great.  The minimal install seems to help with overclocking too so I reckon
>>>> I'm getting about another 35-40% out of the pi.
>>>>
>>>> The main project I've been working on has a pmpd patch that the regular
>>>> raspbian wouldn't even run, on top of that I'm driving a couple of sensors
>>>> (thanks Martin:), audio synthesis, got a reasonably complex quad
>>>> spacialisation patch (thanks Lorenzo:) and is driving a 6 channel
>>>> soundcard.  This is without the usb-slowdown option.
>>>>
>>>> Obviously it's pushing the Pi right up to the limit but it runs* just*about stably.
>>>>
>>>> What I do think made a significant difference was switching the power
>>>> cable to one that outputs 5.2v so by the time it gets to the pi it's a
>>>> solid 5v.
>>>>
>>>> Julian
>>>>
>>>>
>>>> On 3 July 2013 09:42, Dan Wilcox <danomatika at gmail.com> wrote:
>>>>
>>>>> Yeah I tried that out a few months ago when we started the thread.
>>>>> Jack adds some unnecessary overhead in my opinion and I'm surprised that a
>>>>> device that should be more than capable to handle this is just not setup
>>>>> correctly. I'm running a minimal commandline install and pd + realtime &
>>>>> straight alsa should work great ... it has for me in the past.
>>>>>
>>>>> His jack setup basically uses *all* the cpu of the pi, so that cuts
>>>>> out the other parts of my setup altogether .. visual, device input, etc.
>>>>> Again, I was able to get good latency with a much lower resource machine
>>>>> (until it just wore out), so it *should* be possible.
>>>>> On Jul 3, 2013, at 4:35 AM, Julian Brooks <jbeezez at gmail.com> wrote:
>>>>>
>>>>> Hey Dan,
>>>>>
>>>>> Jeremy (autostatic), who setup the 'rpi and low latency, real time
>>>>> audio' thread has a UA-25 and seems to have full duplex working with jack
>>>>> (this was before the recent tweaks as well):
>>>>>
>>>>> http://www.raspberrypi.org/phpBB3/viewtopic.php?p=286222&sid=85c8b0a7cca69e35dcafaf58ff916eec#p286222
>>>>>
>>>>> Could be worth asking him?
>>>>>
>>>>> Julian
>>>>>
>>>>>
>>>>> On 3 July 2013 02:58, Dan Wilcox <danomatika at gmail.com> wrote:
>>>>>
>>>>>> Yeah I tried the latest firmware with my Raspbian install and still
>>>>>> have issues with my UA-25. Full stereo duplex = dropouts. :(
>>>>>>
>>>>>> On Jul 2, 2013, at 5:52 PM, pd-list-request at iem.at wrote:
>>>>>>
>>>>>> *From: *Pierre Massat <pimassat at gmail.com>
>>>>>>  *Subject: **Re: [PD] Raspberry Pi USB2 audio fixed (apparently)*
>>>>>>  *Date: *July 2, 2013 3:52:31 PM EDT
>>>>>> *To: *Julian Brooks <jbeezez at gmail.com>
>>>>>>  *Cc: *PD List <pd-list at iem.at>
>>>>>>
>>>>>>
>>>>>>  Hi all,
>>>>>>
>>>>>> I did a fresh install of Raspbian using the NOOBS installer. The
>>>>>> pd-extended package from puredata.info doesn't work with my
>>>>>> soundcard (it wasn't working before). And Pd vanilla installed from the
>>>>>> Raspbian repositories doesn't work with it either (although it was working
>>>>>> fine before). My soundcard is an old EMU 0404 USB. By "doesn't work" I mean
>>>>>> that it either throws an "Audio stuck/closing audio" error, or simply
>>>>>> freezes everything (Pd, LXDE, mouse, everything) and all I can do is unplug
>>>>>> the power chord.
>>>>>>
>>>>>> So for me not only did it not fix anything, but i'm actually worse
>>>>>> off and left with the inability to use Pd at all on my Pi.
>>>>>>
>>>>>> I haven't tried Miller's compiled version of Vanilla yet (I still
>>>>>> don't know how it is different from the one available in the Raspbian
>>>>>> repos). The recent Planet CCRMA Satelite for the RPi is also an option.
>>>>>>
>>>>>> Pierre.
>>>>>>
>>>>>>
>>>>>>  --------
>>>>>> Dan Wilcox
>>>>>> @danomatika
>>>>>> danomatika.com
>>>>>> robotcowboy.com
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
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>>>>>>
>>>>>>
>>>>>
>>>>>  --------
>>>>> 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
>>>>
>>>>
>>>
>>
>
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