20 Aug
2007
20 Aug
'07
3:38 p.m.
On 8/20/07, Florian Schmidt <mista.tapas(a)gmx.net> wrote:
On Monday 20 August 2007, Steve Harris wrote:
I think i'll stick with the board i originally posted the link to [even if it
doesn't work well enough i have only wasted 50 euros which isn't that much]..
I will attach a USB audio interface for testing purposes and if the
performance is sufficient for me, i'll look into attaching an audio codec to
its ISP bus.
It is somewhat computationally intensive to drive USB audio. For
example the IPX425 used in the NSLU2 can just barely do it. USB audio
runs at 48K and most music is 44.1K, you need to resample it. Make
sure the board has DMA support for the USB channel or it is never
going to work.
I did a
bit more research and barring the size of the board I'd say
something like the Epia 5000
http://www.via.com.tw/en/products/mainboards/motherboards.jsp?
motherboard_id=21
should be a very good choice. Not too complex to finish, onboard
audio,fanless and such. Even a pci slot ;). Quite cheap, around €90.
No idea how capable the soundcard is, but I believe it's tested in
low latency situations atleast?
I think the ones I worked with might have been EPIA 10000s (1GHz VIA
C3), and I did run JACK on them for kicks. I think it worked but I
don't remember how it was though, and I didn't test the card on any
decent monitors. The onboard sound is generic AC-97 stuff. Some of
the models have slow CPUs and very slow FPUs, so beware of those.
I was using them for an audio-less video installation, so the testing
was just for curiosity.
BTW: i don't need jack to run.. I'm not even sure it can run at all on that
board. All i need will be a single application which will feed audio into
LADSPA plugins.. Jack would be overkill..
Regards,
Flo
--
Palimm Palimm!
http://tapas.affenbande.org
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Jon Smirl
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