Re: [LAU] Currently recommended multi-channel USB interfaces

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Thanks Johannes; this sounds promising. I probably don't even need the
mixer but will stick to one particular routing most of the time (DAW
outputs sequentially to analog outputs then digital), also I need
neither zero latency monitoring nor standalone operation right now.

I'm using Debian Jessie which I think is the 3.16 kernel. Probably I
can just compile the linked ALSA patch even with the 3.16 kernel?

Best, .h.h.

On 01/13/2015 03:04 PM, Johannes Kroll wrote:
> On Sun, 21 Dec 2014 20:25:12 +0100 Hanns Holger Rutz
> <contact@email-addr-hidden> wrote:
>
>> [...] Has anyone made good use of either of the following:
>>
>> - - Roland UA-1610 Studio Capture - - Roland UA-1010
>> Octa-Capture - - MOTU 828x - - MOTU 828 Mk III Hybrid - - MOTU
>> UltraLite MkIII Hybrid - - Allen & Heath ICE-16 - - Steinberg
>> UR824 - - Focusrite Scarlett 18i20
>
> I am using the Scarlett 18i8. It's a USB 2.0 class-compliant audio
> device, except for the mixer, which currently needs a kernel patch
> [1]. It works well with the patch. All controls work, no need to
> boot another OS to switch anything. You don't get the fancy custom
> mixer software like on Windows of course, you can use any Alsa
> mixer software to control everything. And the "zero-latency VU
> monitoring" is missing I think, but you can do the same thing using
> Jack.
>
> The patch is in mainline Linux now (I think 3.19), so it should be
> working out-of-the-box in all distros soon. :) The only other
> minor thing missing seems to be the "save settings to hardware"
> software switch, which allows to use the device stand-alone without
> a computer. AFAIK this is not in the mainline kernel for now,
> although it was supported in the patch.
>
> One other thing: the mixer settings allow themselves to be set to
> a positive dB value, which can result in horrible distortion. I
> just looked at it with an oscilloscope; audio isn't clipped when it
> exceeds 0 dB, but wraps around instead, which results in this
> noise. Must be a hardware issue. Easy to avoid though: just don't
> set the mixer controls above 0dB.
>
> [1] https://github.com/trrichard/alsa-driver_scarlett
> _______________________________________________ Linux-audio-user
> mailing list Linux-audio-user@email-addr-hidden
> http://lists.linuxaudio.org/listinfo/linux-audio-user
>

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Received on Tue Jan 13 20:15:02 2015