Old 06-04-2012, 05:01 PM   #81
CoolColJ
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Some results

Windows 7 64 bit SP1
Gigabyte X58a-UD3R with i7 930 at 4 ghz

When I have Speedfan running there is a jump in spike in latencies here and there...

M-Audio Delta 66 PCI

buffer size and reported latency / measured
32 : NA
64 1.45ms : 136-7 samples / 3.08 3.11ms - alternates between the two
128 2.90ms : 264-5 samples / 5.99 6.01ms
256 5.8ms : 520-1 samples / 11.79 11.81ms
512 11.61ms : 1032-33 samples / 23.40 23.42 ms
1024 23.22ms: 2056-57 samples / 46.62 46.64 ms

Delta 66 was my old and first card - seems pretty snappy still! I don't use it for it's analog I/O, just the SPDIF input and as a softsynth playback/recording into my main interface. I figured being a PCI system it would be snappy and I was right


Saffire PRO 24 DSP Firewire

buffer size and reported latency / measured
32 : NA
64 1.45ms : 253-4 samples / 5.74 5.76ms - alternates, but mostly stable on lower value
128 2.90ms : 381-2 samples / 8.64 8.66ms
256 5.8ms : 637-8 samples / 14.44 14.47ms
512 11.61ms : 1149-50 samples / 26.05 26.08 ms
1024 23.22ms: 2173 samples / 49.27 ms Stable

My main interface for now... but I am looking to get something with better coverters and more inputs and outputs to replace my mixer.
Sometimes there is a big delay before the test fires - not sure why... maybe just the suck of Firewire...
The test reported the driver requests ASIO reset on every change - the Delta 66 above does not do this. Can be annoying if you switch in and out of audio software a lot... I guess I should make my Delta 66 as the main card and pipe the audio into my Saffire....
Latency not so good, but to be fair when I play soft synths at 256 buffer size, I don't notice major latency. Hardware synths have 4-10+ ms latency in any case!

Last edited by CoolColJ; 06-04-2012 at 05:09 PM.
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Old 06-04-2012, 05:52 PM   #82
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MSI-X58A-GD65
Intel 980X
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4 x Raptors
Soniccore XITE-1 1U DSP Rack
AES/EBU ADAT Analog XLR's + 2 x MicPres
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Old 06-06-2012, 03:58 PM   #83
CoolColJ
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Surprised how bad the latencies are with the Audiofire 12 in the OP!
I was thinking of getting 2 daisy chained to replace my mixer....

I guess that's how Echo fakes their "low latencies"... with a hidden buffer...

But I'm keeping my Delta 66 PCI for softsynths and pipe the audio via Spdif into my main interface
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Old 06-21-2012, 03:15 PM   #84
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Quote:
Originally Posted by CoolColJ View Post
Some results

Windows 7 64 bit SP1
Gigabyte X58a-UD3R with i7 930 at 4 ghz

When I have Speedfan running there is a jump in spike in latencies here and there...

M-Audio Delta 66 PCI

buffer size and reported latency / measured
32 : NA
64 1.45ms : 136-7 samples / 3.08 3.11ms - alternates between the two
128 2.90ms : 264-5 samples / 5.99 6.01ms
256 5.8ms : 520-1 samples / 11.79 11.81ms
512 11.61ms : 1032-33 samples / 23.40 23.42 ms
1024 23.22ms: 2056-57 samples / 46.62 46.64 ms

Delta 66 was my old and first card - seems pretty snappy still! I don't use it for it's analog I/O, just the SPDIF input and as a softsynth playback/recording into my main interface. I figured being a PCI system it would be snappy and I was right


Saffire PRO 24 DSP Firewire

buffer size and reported latency / measured
32 : NA
64 1.45ms : 253-4 samples / 5.74 5.76ms - alternates, but mostly stable on lower value
128 2.90ms : 381-2 samples / 8.64 8.66ms
256 5.8ms : 637-8 samples / 14.44 14.47ms
512 11.61ms : 1149-50 samples / 26.05 26.08 ms
1024 23.22ms: 2173 samples / 49.27 ms Stable

My main interface for now... but I am looking to get something with better coverters and more inputs and outputs to replace my mixer.
Sometimes there is a big delay before the test fires - not sure why... maybe just the suck of Firewire...
The test reported the driver requests ASIO reset on every change - the Delta 66 above does not do this. Can be annoying if you switch in and out of audio software a lot... I guess I should make my Delta 66 as the main card and pipe the audio into my Saffire....
Latency not so good, but to be fair when I play soft synths at 256 buffer size, I don't notice major latency. Hardware synths have 4-10+ ms latency in any case!

New driver and software for the Saffire - need to restest as the Saffire can do 32 samples now

• Driver updated to 4.0.0 release
• Improves performance on Windows 7 (x86/x64)
• Improves performance in Pro Tools 10 (Win and Mac)
• Updated available sample buffer sizes
• Sample buffer size now scales with sample rate (I.e. At 44.1 KHz a buffer size of 32 samples is used. Changing to 88.2 KHz increases buffer to 64 samples)
• No longer requires use of Windows legacy Firewire driver (Due to this, users who also use the Focusrite Liquid Mix are recommended to ensure that both products are run on separate FireWire buses. If this is not possible then users are recommended to continue using Saffire Mix Control 2.4)
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Old 07-11-2012, 10:52 PM   #85
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Using RME Digiface tied to SSL Alpha Link
Win7 X64 i5-750 Asus P7P55D-E LX 12gig

@32 128 samples/4.13ms
@64 246 samples/5.58ms
@128 374 samples/8.48ms
@256 630 samples/14.29ms
@512 1142 samples/25.90ms
@1024 2166/samples 49.12ms
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Old 07-17-2012, 01:27 AM   #86
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really good reaper track ............fine
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Old 05-26-2013, 02:06 AM   #87
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Default M-AUDIO Audiophile 2496

M-AUDIO Audiophile 2496

44100Hz

@ 64 - 195 samples / 4.42 ms (works fine with roundabout 15 active plugins while having only one track inside the project)
-------------------------------
@ 128 - 322 samples / 7.30 ms (works fine with roundabout 15 active plugins while having only one track inside the project)
-------------------------------
@ 256 - 579 samples / 13.13 ms (works fine with roundabout 15 active plugins while having only one track inside the project)
-------------------------------
@ 512 - 1090 samples / 24.72 ms (with a few clicks if many tracks inside the project (roundabout 40 tracks))
-------------------------------
@1024 - 2114 samples / 47.94 ms (works fine unless to many plugins)
-------------------------------
@2048 - 4163 samples / 94.40 ms (latency to high for MIDI)
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Old 08-04-2013, 10:42 AM   #88
harry mudd
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Default Focusrite Saffire Pro14 & Saffire 6 USB (USB2.0 Model)

Saffire Pro14 w/Saffire Mix Control 3.2

32 164 samples / 3.72 ms
64 228 samples / 5.17 ms
128 356 samples / 8.07 ms
256 612 samples / 13.88 ms


Saffire 6 USB w/Focusrite USB 2.0 Audio Driver

32 491 samples / 11.13 ms (Buffer 1ms)
128 674 samples / 15.28 ms (Buffer 2ms)
256 1017 samples / 23.06 ms (Buffer 3ms)
512 2147 samples / 48.68 ms (Buffer 10ms)

Win7/64 Q8300@2.5GHz 4 GB
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Old 09-13-2013, 11:54 PM   #89
oweng
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Default heya

32 303 - 6.87
64 367 - 8.32
128 495 11.22
256 751 17.03
512 1263 28.64
1024 2287 51.86
2048 4335 98.30





@48

32//255//5.31
64//319//6.65
128//447//9.31
254//703//14.65
512//1215//25.31
1024//2239//46.65
2048//4287//89.31

now go back and see if the tweak improved @44

32//255//5.78

lets go tweak again ...

32//191//4.33 @44.1 ----


very very simple and easy tweak for ... i doubt i can get much more ...

******************
1.6 times faster .... - and simple and easy to do ...
******************
don't know it is is ... solid -- but - looks fine from here ....

... you can bug me for a bit - -- i will eventually tell .... --
i will work on the number a bit more


focusrite 24 -

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Old 10-08-2013, 11:07 PM   #90
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Default M-Audio C400 Fast Track

128 / 5.2 MS
256 / 8.1 MS
512 / 13 MS
1024 / 25 MS

I am content. I mainly use SPDIF I/O connection.
During Recording I apply 128, I have heard if you want to hear yourself during playing and recording
without latency MS must not exceed 6 MS ?!
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Old 12-16-2014, 05:07 AM   #91
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how does this latency test work? what does this program do? its not clear. it sends a pulse and why? i ONLY set my asio4all buffer size to the best it can manage without cracking up and leave it there. so why are people in this thread making several tests and posting those numbers? how is this useful?
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Old 12-16-2014, 06:28 AM   #92
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The pulse as you call it is actually a ping.. You can plug your interface outputs into its inputs to create a loop...
The ping measures how long it takes to travel out of the interface thru DA converter then thru it's analog output then travel thru that cable back into the interfaces analog input then to its AD converter back to that software...

It's not taking into account the DAW on latency..
But it shows you the difference between all the different interface (AD/DA with micpres) and converters (just AD/DA) which I use..

But each company can have different times.. Because of converters the clocks they build then the analog side..now of course most of them the analog timing would be about the same its the converters and clocks that cause the difference in delay.

So the reason to post is to show the difference so you don't have to test a bunch of units..
But also because people who use outboard gear when mixing want low latency or as low as you can get.

Since reaper can't seem to fix the plugin for pinging hardware used on inserts to ping correctly..
Which you can do once you have the numbers for your converter is then enter that number in the plugin window for (external gear). So I have mine written down not in front of me... But if I was mixing and I had my buffer at that point set to 256 or 512 and say I wanted to use some outboard gear on a bass... I would add that external gear plugin.. Set its output to one of my SSL outs run that into outboard comp,EQ and then back into SSL input and then select that same input in the external gear plugin... Now I've created a loop (effect send/return on bass).
In that plugin window instead of hitting ping (which gets it wrong a lot) I will look at my notes cheat sheet..
And if my buffer was 256 I'd look at that row or if I was 512 I'd look at that row... And those rows that I made are based on measurement at 44.1 and I'd put those numbers in the plug that generally is more on time then Reaper doing it itself.. Most times. Also with the samples info you could slide a track to make the difference as well... I don't do that nearly as much as the pro tools days.. Honestly for me I've been using my outboard for tracking and not as much during mixing lately just to make tweaks and recalls easier.
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Old 12-16-2014, 07:09 AM   #93
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Quote:
Originally Posted by reapercurious View Post
how does this latency test work? what does this program do? its not clear. it sends a pulse and why? i ONLY set my asio4all buffer size to the best it can manage without cracking up and leave it there. so why are people in this thread making several tests and posting those numbers? how is this useful?
Last thing first, how is this useful? You want as little latency as possible or at least low enough that you can manage whatever you are doing with your DAW. This becomes critical when you play live (instruments) thru the DAW and cannot or don't want to use direct (zero latency) monitoring. May also be crucial when mixing through outboard gear. In these cases you are affected by RTL, roundtrip latency.

What these tests show are the roundtrip latencies of different audio interfaces at different buffer sizes. So you have some real world data to refer to especially when you need to check what interfaces could do better than your current one. Not something you may think of if you are happy with your current one already, but surely something to keep in mind when updating your gear.

You can check how it works from here:
http://www.centrance.com/products/ltu/

DAWbench site has been keeping a latency database for years already. http://www.dawbench.com/audio-int-lowlatency3.htm

What could be done here is to maybe include even more info about each test setup, like some have done. There are so many different possible configurations, after all.

--
edit: Faderjockey was already there.
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Old 12-16-2014, 07:16 AM   #94
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Now that you mention it...looking back I did my test/check in 2012 it says.
I've since switched to SSD for OS only.. Think that would alter the outcome? Forgot to try out those test again to see if it's different.. I'll have to do it tomorrow when back at studio just to see..
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Old 12-19-2014, 03:14 PM   #95
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ok thanks for the tips, got it working. also i found out that plugins that cause massive pdc like reaverb cause latency balooning. forgot.
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Old 03-14-2015, 02:19 PM   #96
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spam once again on here...
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Old 06-02-2015, 01:20 AM   #97
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Hello,

I have RME UCX, had Metric Halo ULN-8 and now Apogee with no latency issues at all.

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Old 09-25-2015, 11:11 PM   #98
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Default RME Fireface UCX Latency

Great Unit, The CEntrance measure tool reported.
This has worked flawlessly with reaper.
Currently using.

Input 1-2 Microphones.
Input 3 Bass
Input 5-6 Stereo in from Zoom g7.1ut Pedal +4 out then thru (output 3-4 bypass) to a fender FM212R Amp, which is mic'd up (input 1).
Optical Out - Edirol MA-10D (A/B speakers)
Line Out 1 & 2 - +4 Line to ADAM A7X monitors

Latency

192khz - 192samples - 3.51ms
96k -96sample - 3.68ms
44.1k - 48samples - 4.14ms
44.1k - 128samples - 8.08ms
44.1k - 1024sample - 40.48ms
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Old 01-13-2017, 05:46 AM   #99
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Any chance this thread can be merged with the other one in the Reaper General Discussion Forum? The one titled "Round Trip Latency Roundup".
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