[PD] RPI stereo USB audio was: audio interface with multiple ins on raspberry pi
wolfgang spahn
post at wolfgang-spahn.de
Wed Oct 7 18:40:43 CEST 2020
stereo input, but super sound, my Raspi-Sound-Hat
https://paperpcb.dernulleffekt.de/doku.php?id=raspberry_boards:raspi-sound-hat
Wolfgang
Am 07.10.20 um 17:21 schrieb Christof Ressi:
>
>> but I require XML
> In my experience, XML works just fine on all Raspberry Pi models :-p
> On 07.10.2020 17:06, Dan Wilcox wrote:
>> Yeah, I know a lot of these small mini-jack boards work, but I
>> require XML and jack inputs and stereo jack outputs.
>>
>>> On Oct 7, 2020, at 4:58 PM, Antoine Rousseau <antoine at metalu.net
>>> <mailto:antoine at metalu.net>> wrote:
>>>
>>> I've never had much trouble (rpi2/3/3b/3b+/4...) with this kind of
>>> thing:
>>> https://www.gotronic.fr/art-adaptateur-audio-usb-21834.htm (warning:
>>> unfortunately mono input only)
>>> I could run full-duplex Pd at less than 10ms latency (of course it
>>> depends on your actual patch).
>>>
>>> However older (while more expensive) boards (like Alesis io4) have
>>> sometimes been a lot trickier!
>>>
>>> So it seems to me that it depends more on the audio device than on
>>> the computer model.
>>>
>>>
>>> Le mer. 7 oct. 2020 à 15:58, Dan Wilcox <danomatika at gmail.com
>>> <mailto:danomatika at gmail.com>> a écrit :
>>>
>>> Thanks Josh, good to know. Now that the RPI 4 has a controller
>>> chip, I should probably try one again.
>>>
>>> I had some success for a project using a quad-core Udoo board
>>> circa 2013 but it was also more expensive than the Pis at that
>>> time and a bit overkill. It *did* however have a USB controller
>>> chip.
>>>
>>>> On Oct 7, 2020, at 3:42 PM, Josh Moore <kh405.7h30ry at gmail.com
>>>> <mailto:kh405.7h30ry at gmail.com>> wrote:
>>>>
>>>> The Pi 2 and 3's usb were very much hacks due to the
>>>> limitations of the Broadcom chip. It's fixed in the Pi4. See
>>>> here for info:
>>>> https://www.raspberrypi.org/documentation/hardware/raspberrypi/usb/README.md
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Wed, Oct 7, 2020 at 5:18 AM Dan Wilcox <danomatika at gmail.com
>>>> <mailto:danomatika at gmail.com>> wrote:
>>>>
>>>> To add on to Chris's question with a tangent, have any of
>>>> you had good experience with bog-standard stereo USB Audio
>>>> interfaces and RPI 3 or 4?
>>>>
>>>> Some years ago now, I tried to use an RPI 2 with my trusty
>>>> USB 1.1 standard audio interface (Roland Edirol UA-25)
>>>> which is full-duplex stereo, 2 in / 2 out. I could never
>>>> get it to work well in full-duplex mode without dropouts,
>>>> even with a low-latency kernel and other real-time tweaks.
>>>> In the end, it seemed the USB driver on the RPI was simply
>>>> not designed for the "isynchronous audio" this requires.
>>>>
>>>> The same device worked well on my original wearable, a
>>>> Pentium 3 500 MHz machine but with a dedicated USB
>>>> controller chip.
>>>>
>>>> In the end, I decided to move toward iOS for
>>>> embedded/wearable (hence PdParty) and the same device works
>>>> very well at low-latencies on iPads and my (now old) iPhone 5S.
>>>>
>>>> I'd like to still be able to run the setup with alternate
>>>> systems, so does anyone have experience that the USB
>>>> drivers have been improved? Thanks in advance
>>>>
>>>>> On Oct 6, 2020, at 12:00 PM, pd-list-request at lists.iem.at
>>>>> <mailto:pd-list-request at lists.iem.at> wrote:
>>>>>
>>>>> Date: Tue, 6 Oct 2020 10:48:48 +0800
>>>>> From: Chris McCormick <chris at mccormick.cx
>>>>> <mailto:chris at mccormick.cx>>
>>>>> To: PD List <pd-list at iem.at <mailto:pd-list at iem.at>>
>>>>> Subject: [PD] audio interface with multiple ins on
>>>>> raspberry pi
>>>>> Message-ID:
>>>>> <5f3198d4-6210-4b41-d3a6-2cccbd3aae0a at mccormick.cx
>>>>> <mailto:5f3198d4-6210-4b41-d3a6-2cccbd3aae0a at mccormick.cx>>
>>>>> Content-Type: text/plain; charset=utf-8; format=flowed
>>>>>
>>>>> Hey all,
>>>>>
>>>>> Same question as the previous poster but I was wondering
>>>>> about inputs
>>>>> rather than outputs. Ideal solution:
>>>>>
>>>>> * USB.
>>>>> * Low cost.
>>>>> * More than 2 channels in.
>>>>> * Headphone sized jacks.
>>>>> * Works with Raspberry Pi.
>>>>>
>>>>> I've searched but could not find such a beast. Any hints?
>>>>>
>>>>> Cheers,
>>>>>
>>>>> Chris.
>>>>
>>>> --------
>>>> Dan Wilcox
>>>> @danomatika <http://twitter.com/danomatika>
>>>> danomatika.com <http://danomatika.com/>
>>>> robotcowboy.com <http://robotcowboy.com/>
>>>>
>>>>
>>>>
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>>>
>>> --------
>>> Dan Wilcox
>>> @danomatika <http://twitter.com/danomatika>
>>> danomatika.com <http://danomatika.com/>
>>> robotcowboy.com <http://robotcowboy.com/>
>>>
>>>
>>>
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>>> UNSUBSCRIBE and account-management ->
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>>>
>>
>> --------
>> Dan Wilcox
>> @danomatika <http://twitter.com/danomatika>
>> danomatika.com <http://danomatika.com>
>> robotcowboy.com <http://robotcowboy.com>
>>
>>
>>
>>
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>> UNSUBSCRIBE and account-management ->https://lists.puredata.info/listinfo/pd-list
>
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