14 Nov
2019
14 Nov
'19
12:12 a.m.
On 13.11.19 21:59, Len Ovens wrote:
On Wed, 13 Nov 2019, Giso Grimm wrote:
no, PCIe (and RME MADI hdspe cards are far from being budget - although
quite cheep compared to over 100 loudspeakers and corresponding
DA-converters :-) ). Sample clock sync works perfectly.
The only response I got from RME is "it works on Windows without any
latency differences" - however if I understand it correctly in this case
the interrupts of the two sound cards need to be somehow synchronized
with sub-sample precision.
Dear linux-multichannel-audio-users,
we are running a setup with two RME MADI cards to drive a system with
approx. 100 playback channels. We are using jack2 and zita-j2a to
achieve a sufficient number of playback channels. The sample clocks are
On a similar setup (with two different card
types) I noticed that the
latency between the cards is fixed as long as jack/zita-j2a is running,
however, the latency differs between starts of jack. This seems also be
the case in the setup with two MADI cards.
USB cards by chance? This is a known problem with USB Audio. Well
actually with USB in general. I am coming to the realization USB audio
devices are not desirable for profesional audio. They are sort of the
best one can get on a limited (reasonable?) budget. It is unfortunate
that USB has become the way periferals are added on modern computers
when it comes to audio. USB is great for many other things from printers
to mice, but not really critical audio.
--
Len Ovens
www.ovenwerks.net
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