Re: [LAU] Dual Delta Setup

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To: Ben Bell <bjb-linux-audio-user@...>
Cc: <linux-audio-user@...>
Date: Saturday, December 29, 2012 - 6:23 pm

On Sat, December 29, 2012 3:43 am, Ben Bell wrote:

This page you mentioned lists RT kernels as a possible problem and
suggests using a kernel without the RT patch, but with preempt (a
lowlatency kernel) as the best way to go. I also suspect the latency may
need to be a bit higher with two cards, but I have not tested that.

Remember that John Rigg's setup has/had a hard wired clock setup (he seems
to have removed the link that shows it). He installed high quality clocks
in the PC case and wired them in place of the D1010 PCI board clock. So
all three of his D1010s were hard synced without using wordclock or
s/pdif. (he also used off board voltage regulation... in anycase his was
not an "out of the box" setup)

As with all Jackd projects, you need to analyze your latency needs for the
part of the project you are working on. For example, I use a low latency
for tracking (jackd started with -p64 on my old P4) and try to track
without effects and mute tracks I don't need to hear to do a track. Then I
increase the latency for mixdown and add whatever effects I want/need to
make it sound right. Some musicians need some effects to get the feel for
what they are playing, so each project is different.

In your case, I would recommend a higher latency if recording a live
performance (where you need lots of inputs) with all monitoring done
before the signal gets to the D1010 inputs. This would also be true if
recording "live in the studio". I would use only one D1010 for doing
single tracks with the lower latency (I find I rarely need more than two
tracks at a time, but I have no drums to record). That is, only use the
two D1010s synced when you need it and accept their limitations. The idea
of one setup works for everything leads to frustration ... at least with
what I have to work with.

--
Len Ovens
www.OvenWerks.net

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Messages in current thread:
[LAU] Dual Delta Setup, Ben Bell, (Sat Dec 29, 11:43 am)
Re: [LAU] Dual Delta Setup, drew Roberts, (Sat Dec 29, 6:29 pm)
Re: [LAU] Dual Delta Setup, Ben Bell, (Sun Dec 30, 2:22 pm)
Re: [LAU] Dual Delta Setup, Len Ovens, (Sun Dec 30, 4:55 pm)
Re: [LAU] Dual Delta Setup, Fons Adriaensen, (Sun Dec 30, 2:46 pm)
Re: [LAU] Dual Delta Setup, Ben Bell, (Sun Dec 30, 7:27 pm)
Re: [LAU] Dual Delta Setup, Fons Adriaensen, (Sun Dec 30, 11:33 pm)
Re: [LAU] Dual Delta Setup, Devin Anderson, (Sun Dec 30, 11:51 pm)
Re: [LAU] Dual Delta Setup, Len Ovens, (Mon Dec 31, 1:50 am)
Re: [LAU] Dual Delta Setup, Devin Anderson, (Mon Dec 31, 3:12 am)
Re: [LAU] Dual Delta Setup, Len Ovens, (Wed Jan 2, 11:35 pm)
Re: [LAU] Dual Delta Setup, Joe Hartley, (Thu Jan 3, 12:26 am)
Re: [LAU] Dual Delta Setup, Fons Adriaensen, (Thu Jan 3, 12:05 am)
Re: [LAU] Dual Delta Setup, Len Ovens, (Thu Jan 3, 3:15 am)
Re: [LAU] Dual Delta Setup, John Murphy, (Thu Jan 3, 5:04 am)
Re: [LAU] Dual Delta Setup, Len Ovens, (Mon Dec 31, 2:47 pm)
Re: [LAU] Dual Delta Setup, Paul Davis, (Mon Dec 31, 2:58 pm)
Re: [LAU] Dual Delta Setup, Len Ovens, (Mon Dec 31, 10:33 pm)
Re: [LAU] Dual Delta Setup, Paul Davis, (Tue Jan 1, 4:06 am)
Re: [LAU] Dual Delta Setup, Paul Davis, (Mon Dec 31, 2:03 am)
Re: [LAU] Dual Delta Setup, Devin Anderson, (Mon Dec 31, 2:40 am)
Re: [LAU] Dual Delta Setup, Fons Adriaensen, (Mon Dec 31, 9:24 am)
Re: [LAU] Dual Delta Setup, Paul Davis, (Sun Dec 30, 3:52 pm)
Re: [LAU] Dual Delta Setup, Fons Adriaensen, (Sun Dec 30, 4:27 pm)
Re: [LAU] Dual Delta Setup, Ben Bell, (Sat Dec 29, 10:35 pm)
Re: [LAU] Dual Delta Setup, Len Ovens, (Sat Dec 29, 6:23 pm)
Re: [LAU] Dual Delta Setup, Ben Bell, (Sat Dec 29, 10:31 pm)