7 Mar
2011
7 Mar
'11
4:55 a.m.
On 07/03/11 14:42, S. Massy wrote:
On Mon, Mar 07, 2011 at 02:09:46PM +1100, Leigh Dyer
wrote:
FFADO does have its own mixer app, called ffado-mixer, which is meant to
be able to handle all of this routing stuff. There's some discussion of
how the mixer relates to DICE-based devices like the PRO40 here:
http://sourceforge.net/mailarchive/message.php?msg_id=26483915
I have opened ffado-mixer, and it looks like it works, but I haven't
actually used it for anything yet. Out-of-the-box, it routes the 8
analogue ins to the first 8 JACK capture ports, and the 10 analogue outs
to the first 10 JACK output ports, so I've had no trouble recording and
playing audio without having to use the mixer.
I can of course route inputs to outputs using JACK, and in fact while
recording I always tend to monitor in software anyway, through Ardour. I
know that using the Saffire's internal routing would give me essentially
zero-latency, but even at 8ms it's close enough to zero for my needs.
Thanks
Leigh
On 07/03/11 13:59, Josh Lawrence wrote:
Just
curious. I thought the saffires needed custom software to handle
the routing. How does that work under linux? hey everyone,
my friend and I are starting a recording project that will require
multiple mic inputs. my soundcard has only two xlr inputs, and I need
at least 8. I could buy a cheap mixer and and sum everything up, but
I'd like to have access to all of the channels in ardour if possible.
does anyone have any recommendations for "pro-sumer" soundcards that
have at minimum 8 xlr inputs?
I'm very happy with my Focusrite Saffire PRO40 -- it's a Firewire interface with 8 analogue ins and 10 analogue
outs. Each of those
inputs is an XLR/jack combo, and each has a preamp with phantom
power, so hooking up eight mics is a no-brainer. The first two
inputs can also be switched to a high-impedance mode for plugging in
guitars directly. If you need more ports later, it has an ADAT port
that you can hook one of those Behringer units up to.
Performance on it is great -- I'm not the best judge, but the
preamps sound very clean and noise-free to me. On a realtime kernel
I can run it with 4ms latency in JACK with no problems, but I prefer
to run it at 8ms on a stock kernel instead.
To get it working under Linux, you need FFADO SVN (Ubuntu Maverick
actually ships with a recent enough SVN version for it to work, and
I think Debian Squeeze might, too), and you need to use the old
Firewire stack; FFADO does work with the new stack, but there's a
bug in there somewhere that causes audio output to fail on
DICE-based devices like the PRO40 when using FFADO on the new stack.
You'll also need a Firewire controller if you don't have one; I was
lucky enough to have a TI-chipset controller on my motherboard, but
it hopefully won't be hard to track down a PCI card with a TI
chipset.
Thanks
Leigh
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