Setting To Reduce Total Round Trip Latency

Page: < 12 Showing page 2 of 2
Author
Post
Essentials Only Full Version
brundlefly
Max Output Level: 0 dBFS
  • Total Posts : 14250
  • Joined: 2007/09/14 14:57:59
  • Location: Manitou Spgs, Colorado
  • Status: offline
Re: Setting To Reduce Total Round Trip Latency 2015/04/30 13:11:39 (permalink)
BobF
Is it just me?  I don't see 17ms RTL with 128 sample buffer to be that bad.  I'm happy as can be with 8ms RTL @ 64 samples.
 

 
Additional round-trip latency on top of 2x the buffer is typically just a millisecond for A/D/A conversion (20-30 samples each way) plus whatever the bus adds - maybe 1-2 milliseconds for PCI(e), and anywhere from 3-6 for USB. So I would say your 8ms at 64 samples is on the high side of normal for a USB interface. 17ms at 128 samples is pretty far out of the normal range.
 

SONAR Platinum x64, 2x MOTU 2408/PCIe-424  (24-bit, 48kHz)
Win10, I7-6700K @ 4.0GHz, 24GB DDR4, 2TB HDD, 32GB SSD Cache, GeForce GTX 750Ti, 2x 24" 16:10 IPS Monitors
#31
HighestOlive
Max Output Level: -88 dBFS
  • Total Posts : 110
  • Joined: 2005/04/20 23:56:30
  • Status: offline
Re: Setting To Reduce Total Round Trip Latency 2015/04/30 13:11:40 (permalink)
To add clarity. The CEntrance measurement provided above was performed with Sonar closed.  What I was trying indicate in the post above as that I also see a reported round-trip latency of 16.19 ms inside Sonar if i don't have a project open.  If I open a project I see a reported round-trip latency of 17.7 ms. So it appears that just opening a project increases the round-trip by 1.51 ms (which I guess could be a result of of some of the plug-ins in that particular project but I am not sure). 

http://www.higholives.com
http://www.facebook.com/higholives
http://www.youtube.com/higholives
http://www.reverbnation.com/higholives 
#32
mrneil2
Max Output Level: -88 dBFS
  • Total Posts : 126
  • Joined: 2010/06/09 20:57:28
  • Status: offline
Re: Setting To Reduce Total Round Trip Latency 2015/04/30 21:36:43 (permalink)
What happens if you uncheck 64 bit precision engine?
Also your timing is octacapture 1-2 which is correct but why is the record latency adjust set to octacapture 5-6? Try making that octacapture 1-2

Just an idea

Software:Platinum    
 
Computer: HP Envy  i7-3770 CPU @ 3.40GHz , 8GB Ram, 64bit Operating System, Windows 10
Western Digital (1TB) External Hard Drive
Roland Octa-Capture    
M-Audio Keystation 88es
#33
lfm
Max Output Level: -53 dBFS
  • Total Posts : 2216
  • Joined: 2005/01/24 05:35:33
  • Location: Sweden
  • Status: offline
Re: Setting To Reduce Total Round Trip Latency 2015/05/01 04:28:44 (permalink)
brundlefly
lfm
Just make a analog loopback on interface - and record metronome on that track.
If they line up reported is correct.



CEntrance does the measurement for you, and is sample-accurate without exception in my experience.


That is good to know.
But also good to know what Sonar get as reported and where it places recorded clip - there was a deviation in reported samples.
Not end of story - but just a clue how to proceed.
#34
Page: < 12 Showing page 2 of 2
Jump to:
© 2025 APG vNext Commercial Version 5.1