linuxaudio.org

On Wed, Oct 26, 2011 at 11:01 AM, Christoph Kuhr  wrote:

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>

>> 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.

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.
> the pro audio industry is presenting first products soon, meyersound already

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> 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

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>> 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

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.

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