26 Oct
2011
26 Oct
'11
6:23 p.m.
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.
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