[Ardour-Users] Ardour with multiple cheap (USB) audio interfaces.

Marco Bertorello marco at bertorello.ns0.it
Sat Jan 11 13:02:42 PST 2014

2014/1/11 Robin Gareus <robin at gareus.org>:
> On 01/11/2014 02:25 AM, ChaosEsque Team wrote:
>> Hi, I'm really interested in helping people who want to use Ardour
>> with multiple cheap (USB) audio interfaces. It doesn't seem very easy
>> right now to do this sort of thing - in fact, I'm not even clear if
>> it is possible
> It is possible, but you're quite right that it's not very accessible,
> mainly  because there is no GUI to set this up. You'll need to resort to
> a few terminal commands.
> Ardour uses JACK, so the goal is go add an additional soundcard to jack.
> There are various options to do this, most of which are described at
> http://jackaudio.org/multiple_devices
>> and I'd appreciate some guidance because I think
>> this is really important group of people: folks that can't afford
>> multichannel interfaces and lots of amps, the sort of people who
>> might really be attracted to a tool like Ardour.
> Fair point. As explained on the linked page, it is not ideal to use
> multiple un-synced soundcards, but it can be good enough for many cases.
> The easiest way to do so on GNU/Linux is to to use alsa_in/out:
> First start jackd as usual with one soundcard - and then add the others
> as needed.  This is as easy as opening a terminal and running
>    alsa_in -d hw:1
> This adds the 1st soundcard (hw:1) inputs to an already running jackd.
> Instead of numeric IDs you can also use the name of the soundcard.
> Device and their names can be listed with 'aplay -l'. For example
> [..snip..]
> card 3: UA25 [UA-25], device 0: USB Audio [USB Audio]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> in this case 'alsa_in -d hw:3' is equivalent to 'alsa_in -d hw:UA-25'
> To add outputs use the sister of alsa_in: 'alsa_out -d hw:DEVICE'
> Hope that helps,
> robin
> PS. there are ways to automate this process as well as auto-detect,
> auto-launch. Yet, this is mostly undocumented territory and requires a
> bit of scripting which builds upon above concept. More later if you're
> interested..

a little gui for this is quite simple.

Say hallo to Jigi (Jack Interfaces Graphical Interface) :P

It use just zenity and commands explained in this mail.

Just run launch jackd and then jigi.

You can select multiple soundcard at once

Marco Bertorello
System Administrator

"prima di sgomberarci sgombratevi il cervello
noi siamo la comunità toglietevi il cappello"
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