[LAU] Multichannel analog I/O audio interface: experiences and tips

[Philippe Bekaert]

Rme has their own proprietary ways of dealing with usb quirks and providing error detection and correction, while keeping low latency. They do a pretty good job, but unfortunately, the details are not shared. 

I’m personally quite fund of their (current range of) pcie cards on Linux (except madi-fx, which only has a work in progress driver on Linux - but rme can share the info to develop it further if anyone wants). The aio pro card has 2 analog ins and outs. If you need more, they have excellent ad-da converters that work flawlessly with the pcie cards on Linux (at least when using jack, which I always do, I have limited experience with using Alsa directly for audio I/o and none with soundwire - still on the todo list).
People looking into entering the world of ip audio, in particular Dante or avb, will appreciate their convertor boxes, esp. to madi. 0,7 msecs additional latency only. 

But it will cost you more than 700 euros to get set up.

Best, ph

Philippe Bekaert

> Op 14 jun. 2022 om 17:28 heeft Anders Hellquist <lau at hellquist.net> het volgende geschreven:
> 
> 
> Motu AVB Interface are class complaint and can be managed over ethernet, has onboard mixer for local channels as well as AVB streams.
> 
> In theory, an optimal solution that can scale up to hundreds of channels as well as hundreds of meters.. but in practice, not so.
> 
> The USB implementation is buggy and to get it nice and stable, you need a very old firmware (which doesn't always work on newer revisions) or a kernel patch.
> 
> I have 3 Motu AVB devices but I cannot recommend them for linux usage.
> 
>> On Tue, Jun 14, 2022, 16:10 Peter P. <peterparker at fastmail.com> wrote:
>> Hi list,
>> 
>> * Brandon Hale <bthaleproductions at gmail.com> [2022-06-14 15:24]:
>> [...]
>> > Now for the downside: it has its own proprietary software that doesn't exist
>> > on Linux for digital processing and mixing. Basically, the interface has its
>> > own mixing utility that also allows one to apply limited dsp effects and
>> > mix/route audio. If you wanted to stay solely on Linux, this cannot be used.
>> 
>> That's the case with many USB audio interfaces in fact. I amquite
>> stubborn in this regard and don't want to pay for features that I will
>> not be able to use (especially sever with current RME devices). It is
>> hard to find multichannel class-compliant USB interfaces that don't
>> require some proprietary program. The Behringer umc1820 seems to be one. 
>> 
>> Anyone knows other such interfaces?
>> 
>> best, P
>> _______________________________________________
>> Linux-audio-user mailing list
>> Linux-audio-user at lists.linuxaudio.org
>> https://lists.linuxaudio.org/listinfo/linux-audio-user
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> https://lists.linuxaudio.org/listinfo/linux-audio-user
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.linuxaudio.org/archives/linux-audio-user/attachments/20220614/437333dd/attachment-0001.html>