26 Oct
2011
26 Oct
'11
7:58 p.m.
Regarding the USB target, I also know of this project
http://www.linux-usb-daq.co.uk/
which may be helpful.
It's a USB data acquisition board which works with the COMEDI drivers.
Everything is open and you may find something helpful there.
On 10/26/11, Folderol <folderol(a)ukfsn.org> wrote:
On Wed, 26 Oct 2011 11:23:53 -0500
Charles Henry <czhenry(a)gmail.com> wrote:
On Wed, Oct 26, 2011 at 11:01 AM, Christoph Kuhr
<christoph.kuhr(a)web.de>
wrote:
OK, that's a very good standard. Then, it's also addressable, so you
could have multiple audio devices on the same network. It should also
be good for designing large PA systems (over whole buildings, concert
halls, arenas, etc...) using standard networking.
I have a Basys2 Xilinix board to get started on. It's decently priced
and has an I2C DAC module (20$ extra) for me to play with, plus some
breadboards for trying out other IC's. At my university, I can take
an FPGA course next spring also. Seems like it's still a long road
ahead before having anything interesting programmed.
I'd also be interested in other manufacturers--the big issue for me is
figuring out which programming interface works best (on Linux
preferrably!!!). The Xilinx ISE 13.2 needed a little debugging of
shell scripts, so far.
Wasn't this very much like what was discussed about a year ago?
There is this:
http://www.xmos.com/avbl2
The code for this reference design is royalty free, and lots of detail is
available. With all the documentation and code available, surely it would be
possible to make a linux equivalent to an endpoint.
These are BGA devices so not suitable for D.I.Y. builds, but I wonder how
much a
small production run would be for a board with just the power, Ethernet and
I2S
headers.
--
Will J Godfrey
http://www.musically.me.uk
Say you have a poem and I have a tune.
Exchange them and we can both have a poem, a tune, and a song.
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user(a)lists.linuxaudio.org
http://lists.linuxaudio.org/listinfo/linux-audio-user
I'm unfamiliar with AV bridging--what do you
use it for?
AVB is a !!! layer2 !!! ethernet standard for audio and video transport,
with precise timing synchronization (house clock like with grandmaster
clock
selection), resource reservation and quality of service.
worstcase latency over 7hops: 2ms
needs fast eth at least. the pro audio industry is presenting first
products soon, meyersound
already
has it in use in its dmitri.
harman pro (studer, soundcraft, bss, jbl,...), yamaha will support it,
biamp, focusrite, audinate, and many many more...
this compatibility would make such an open interface much more
interesting,
i think.
Where does the implementation belong? It ought to factor into
designing kernel modules + hardware (eth) + fpga code.
While the
FPGA's themselves aren't prohibitively expensive, the rapid
development boards+software are.
i have a low budget board from xilinx (200$), but will soon switch to
altera, because the are cheaper boards available (60€)...
bye
Ck