[PlanetCCRMA] Any known USB audio interfaces that actually have four outputs that show up in Jack?

[Sean Beeson]

Niels,

Which version of Fedora are you running Mixxx on in the case you
mention using it? Curiously, I will be trying to setup Mixxx for a
community radio station.

Thanks,

--Sean

On 5/15/10, Niels Mayer <nielsmayer at gmail.com> wrote:
> On Fri, May 14, 2010 at 6:55 AM, Bob Wilkinson <wilkinson.bob at comcast.net>
>  wrote:
>
>> Yes, using the procedure outlined on John Rigg's website.  The website is:
>> http://www.jrigg.co.uk/linuxaudio/ice1712multi.html
>>
>
> FYI, the "multi" trick is also useful for binding together separate
> subdevices of the same soundcard. often a card presents two or three
> subdevices, hw:0,0 (main analog) ; hw:0,1 (iec958 digital) and sometimes
> hw:0,2 (e.g. hdmi audio on motherboard w/integrated audio/video). Normally
> jackd -Dhw:0 would just give you access to subdevice 0. By using an ALSA
> "multi" type for jackd's input and output device specifiction, you can tell
> jackd to create a device combining hw:0,0 and hw:0,1 so that you can
> simultaneously access both digital and analog parts of a soundcard in Jack.
> I ran a test yesterday on a 2.8Ghz dual core Opteron 1220, running 'mixxx'
> through Jack, with headphones monitoring one channel, and spdif outputting
> the other channel to main monitors. Ran for several hours without any Xruns
> on non-RT kernel-2.6.32.11-99.fc12.x86_64 ....
>
> For details, see
> http://lists.linuxaudio.org/pipermail/linux-audio-user/2010-May/069482.htmlwhich
> shows how to do this with an ICE1724-based Dynex dx-sc51:
> background:
> http://old.nabble.com/Re:-perhaps-why-some-of-us-have-more-trouble-w--pulseaudio-than-others-(ICE1712-M-audio-delta-problem-w--pulseaudio)-p28528791.html
> ... my inspiration:
> http://old.nabble.com/Is-it-possible-to-use-two-RME-cards-in-sync--to28513035.html
>
> Niels
> http://nielsmayer.com
>
>
>
>
>
>>
>>
>> ----- Original Message -----
>> From: "Sean Beeson" <seanbeeson at gmail.com>
>> To: "Bob Wilkinson" <wilkinson.bob at comcast.net>
>> Cc: "planetCCRMA" <planetccrma at ccrma.stanford.edu>
>> Sent: Friday, May 14, 2010 9:39:13 AM GMT -05:00 US/Canada Eastern
>> Subject: Re: [PlanetCCRMA] Any known USB audio interfaces that actually
>> have  four outputs that show up in Jack?
>>
>> On 4/29/10, Bob Wilkinson <wilkinson.bob at comcast.net> wrote:
>> > ALSA doesn't really bind these together per se, the binding occurs in
>> > the
>> > .asoundrc file, then you call this "virtual" device in jack.
>> >
>> > I had to do this to bind my two Delta 1010s together.
>>
>> Bob,
>>
>> were you actually able to get jack to use both? I am only able to get
>> Alsa to see both.
>>
>> Thanks,
>>
>> --Sean
>>
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>>
>