What is the total latency of the iLive. How long does it take to go from input socket>AD conversion >dynamic processing>inserts (fx, etc)>DA conversion >output socket
Is this a fixed latency or does it vary based on what dynamics are engaged? Does routing an IP via a group increase latency? Does adding an insert FX increase latency?
Thanks!
-d
Uhm!! Interesting. I never really cared, but ill take some measurements soon.
Gil Parente
Design & Integration
Entertainment Arts, Inc.
iLive 176, T112
iDR48 , iDR16, iDR10
Multiple iPads
Dante
Etc…
hi!
i have done various time-measurements on my ilive 
if someone wants that - please contact me!
greetz,
andee
–
andreas putz
foh engineer
office@inlinemedia.at
Search and ye shall find…
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[url][https://iliveforum.allen-heath.com/topic.asp?TOPIC_ID=1130&SearchTerms=Latency/url]
@ graham: nice - but there are differences in latency if you use an aux, group, matrix, …
that’s why i made these measurements
greetz,
andee
–
andreas putz
foh engineer
office@inlinemedia.at
Put all the measurements online then, Why keep them to yourself? Or are you the latency police?
… why should i keep it by myself?? i wrote that anybody can have this sheet …
here it is - especially for you, graham
https://www.andreas-putz.com/tech_files.html
greetz,
andee
–
andreas putz
foh engineer
office@inlinemedia.at
I wouldn’t use white noise for latency measurements.
Since this is quite randomly generated noise, it’s harder for the software to find the exact latency, moreover because you’re not constantly in the digital domain. I would use a less random source like music.
To me, the 1,3ms is significant and maybe the 0.5ms difference between “mixrack local” and “mixrack to surface”. The 0.1ms differences between using a group or matrix, to me, are less significant.
One could argue that it’s a pity that there isn’t a latency correction in the board, just like DAW software does. Does anyone know if other brands implement this?
Wouter
IDR32, R72, Dante, Mixpad
laptop, TP-Link TL-WR1043ND</font id=“size1”></font id=“navy”>
Latency correction just adds more latency. Hopefully such a feature would be switchable for those that don’t find a need.
iDr48/T-112/MADI
hi all!
… white noise is the best stimulus you can use for such measurements
why? because you have equal power within a fixed bandwidth - music will be more randomly, of course!
and no - the software does not correct the internal latency - so it is like it is!
greetz,
andreas
–
andreas putz
foh engineer
office@inlinemedia.at
quote:
Originally posted by inlinemediahi all!
… white noise is the best stimulus you can use for such measurements
Seriously, it’s better to use a MLS or short pulses. MLS sounds like white noise but it has no random components. Short pulses contain the whole spectrum, also very good for measuring.
But to be fair, the results would not be that different, I guess.
SRV-AVB
R-72, iDR-16, xDR-16, Dante
quote:
Originally posted by woutertI wouldn’t use white noise for latency measurements.
Since this is quite randomly generated noise, it’s harder for the software to find the exact latency, moreover because you’re not constantly in the digital domain. I would use a less random source like music.
</font id=“quote”></blockquote id=“quote”>To find sync points is possible…music is not really better…
SRV-AVB
R-72, iDR-16, xDR-16, Dante
some explanations from the developers…
https://iliveforum.allen-heath.com/topic.asp?TOPIC_ID=1840
SRV-AVB
R-72, iDR-16, xDR-16, Dante
There is no way to have no latency in a digital system. I am a bit surprised not everything has the same latency. I don’t yet use any fancy routing so I’m okay, but would like a “delay compensation” option to keep things phase accurate.
T112/48, MacBook Pro, D-link DIR-815, iPad 1 w/mixpad, Dante card feeding a Mac Mini w/DVS.
A delay compensation would keep phase coherency but will introduce more latency.
SRV-AVB
R-72, iDR-16, xDR-16, Dante
Each channel, aux, group, main, matrix, and FX have a delay setting. It’s not calculated automatically, but it certainly seems possible to adjust delays as desired.
iDr48/T-112/MADI