[LAU] RME Multiface and an extra 8 output channels

[Fons Adriaensen]

On Tue, May 14, 2013 at 11:40:23AM -0300, Iain Mott wrote:
> 
> > 
> > The cheapest solution with exactly the same output characteristics:
> > Get a second used Multiface I and use it as ADAT->Analogue converter
> > box. Measure the ADAT transport delay (should be in whole samples) and
> > compensate the latency. Done.
 
> Flo, Thanks for all the advice - and I guess you're right - I should
> really look for another MF-I. Just one more question (I hope) : how will
> I measure the ADAT transport delay? 


First do

  jack_delay -> MF-A analog out -> MF->A analog in -> jack_delay

then

  jack_delay -> MF-A adat out -> MF-B adat in -> MF-B analog out -> MF-A analog in -> jack_delay.

The difference is the ADAT transport delay. You could use a MF II as well.

If you are using this for an Ambisonic setup you can let Ambdec do the 
delay compensation : in the Ambdec config, add the extra delay converted
to distance at the speed of sound to the distances of the speakers connected
to the second box, and enable distance compensation.

Ciao,

-- 
FA

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