linuxaudio.org

El dl 10 de 05 de 2010 a les 17:32 +0200, en/na Florian Faber va

escriure:

quoted text
> Pau,

>

> > the system i need to build should have 8 AES inputs and 24 AES outputs.

> > For that, i see two basic approaches 1) using two RME AES-32 (*) cards

> > in world-clock synch and 2) using a RME hammerfall with 24 ADAT

> > input/outputs and then several 8ch ADAT<->AES converters such as the

> > Aphex 144 (+), which costs about 400€ each 8ch unit.

>

> 3) a MADI interface and any MADI-to-ADAT converter you want

Right. But the MADI-to-AES alone (the ADI-6432) costs about 2800€. Far

beyond 1) and 2).
> What are those AES ports needed for anyway? I mean, this are 16 channels

quoted text
> in and 48 channels out. With that number of channels, using AES just

> becomes a pita. Think of the cabeling alone - or use Tascam-style 25 pin

> DSUB connectors.

Yes AES makes it all over complex but it is a requirement not a

decision. It is all about connecting to existing boxes.
> > Option 1 seems to me simpler and cheaper but i ignore if is feasible and

quoted text
> > reliable: Have anyone had good experiences using two clock-synced RME

> > cards with jack?

>

> The driver can start the buffers synchronously, so you have

> sample-synchronous output. To have jack working with multiple cards, you

> can either use alsa magic to combine the cards, or use alsa_out (with

> disabled resampling).

Will try that with a couple of hammerfall 9632 we have in the lab before

buying the (two) AES-32.

Any recommended documentation or advice?

(Apart from this: http://alsa.opensrc.org/index.php/TwoCardsAsOne)
Thanks

P
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