2 Oct
2017
2 Oct
'17
10:58 a.m.
Hi jack's list,
This is a very usefull project, thank you for this !
Maybe a master / slave driver can be good for use as master clock or
stick to the soundcard's clock ? Or as an internal ?
If needed for tests, i can look to access to some dante networks.
Wargreen
On 02/10/2017 12:12, Philippe Bekaert wrote:
Thanks all for these helpful comments!
I’ve been studying the last days, and I am studying more.
I downloaded merging technologies free AES67 virtual sound card for mac already, as well
as the Dante Via from audinate (59USD). The latter is also capable of functioning as a
master clock on the network I understand. That will do for the testing and development at
this time. Thanks for the many other suggestions you made. The gear I found before was
more expensive (e.g. digigram has a -very well reputed- ravenna sound card with linux
support for about 2K).
There is indeed a Ravenna reference implementation with linux support by ALC NetworX. I’m
waiting for information regarding conditions for obtaining, using, distributing it. I’m
also in contact with people at Merging regarding their VSC driver in progress for Linux.
I contacted audinate regarding AES67 patent claims.
As said, I’m not really considering implementing AES67 as a virtual sound card driver - I
prefer to stay clear of kernel space development. Instead, Im aiming for a jack client
application, and perhaps a jack audio driver (like the net drivers). The latter allow to
have jack running at AES67 clock, and being fully transparent (no sample rate conversion).
But the former, a client application, is probably better if you just want to receive and
monitor / send AES67 on / from a computer having a sound card already.
Thanks also for the hint about the zita resampler library.
I’m keeping you informed about progress and findings.
Best,
Philippe.
On 01 Oct 2017, at 10:32, Christoph Kuhr <christoph.kuhr(a)web.de> wrote:
A few years back there had been a AES67/Ravenna
implementation. But the developer and ALX Networks could not agree on the license. The
developer wanted to publish it under GPL, which ALX Networks did not want. So the
implementation was dumped. Well, that is the story how I know it.
The developer was Florian Faber, but he is no member of the jack-devel or linux-devel
list anymore. Perhapes, he might have some useful insights, if you manage to find a
contact. ;-)
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