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Kaine
KVRAF
 
1640 posts since 4 Nov, 2004, from Manchester

Postby Kaine; Fri Dec 08, 2017 1:16 am Re: What is the best (fastest, low latency) audio interface?

ataraxia89 wrote:Edit: Just done a DPC Latency check whilst running Cubase (with my biggest project open), Adobe Premiere Pro CC (the hungriest application I have, whilst loading 37 4K videos into memory), a media server and a full system scan with Norton antivirus and the highest reading I got was 1317ms, it averages around 200-300ms on normal running


Latency checker is designed as a driver response test and not a load test. You run it on a bare desktop, not with applications running to get a baseline.

If it works fine at desktop, but shit goes south when you open an application, you take it up with the application developer. Well, you delve into the application and disable anything that calls back, or is likely to hog the system resources... and then when that fails, you take it up with developer.

Either way, you don't thrash it like that!

T.B.H I'd expect any anti-virus that does in-depth heuristic scanning like Norton to error the result which is why I tend to no advise them on an audio box. If that's the only thing that's tipping the rig over the read, you can be pretty sure it's working as intended.
ataraxia89
KVRer
 
9 posts since 29 Mar, 2017

Postby ataraxia89; Fri Dec 08, 2017 1:46 am Re: What is the best (fastest, low latency) audio interface?

yellowmix wrote:
ataraxia89 wrote:it averages around 200-300ms on normal running


That's kind of high, to be honest. Try shooting for 150, it's probably achievable with little effort. I have mine at 40ms idling.

You need to look at startup items, running services you don't really need. Crap like Java, Adobe, Chrome updater (better to ditch them all anyway). And if you ditch Norton it'll probably help a lot. Also check your power profile settings, make sure it's running at max when you're in your DAW.

Other sources are a little more difficult to address. Stuff like WiFi drivers eating cycles. I'm running a 10m ethernet cable to my workstation to address that. Firewire and video card drivers can also be bad citizens.


It's probably still too high as I have TeamViewer running, and I was running all that other stuff to stress it and see what worst case scenario is. There's no WiFi on the PC, Java not running, nor Chrome updater. Norton will be stopped whilst I'm working.

However, I have stopped everything running (TeamViewer, media server, Norton, etc) in the past apart from the DAW and I've still had problems. I've also had this on a different PC (although that wasn't as powerful as this one).

I'll be looking into the RME HDSPe I think, managed to find a new one for £470 (nobody's selling used ones!).

Edit: I've just switched off Adobe, Norton (disabled as I actually can't stop it), TeamViewer and everything else that isn't a core Windows process and the lowest possible reading I can get it 109ms, averaging 120-170, so how you've got 40ms is beyond me...
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Guenon
KVRian
 
1113 posts since 17 Jun, 2005

Postby Guenon; Fri Dec 08, 2017 3:42 pm Re: What is the best (fastest, low latency) audio interface?

If it's hovering at 120-170, don't sweat it :). As long as you know there aren't spikes, caused by misbehaving drivers etc, you will most probably never have to deal with it in any manner. To get an ultra low reading something like the 20-30 on the workstation I posted a screenshot from, you either need to be lucky or the whole system needs to be planned component by component for realtime operation, referencing other known successful builds and so on, like with that machine. But seriously, as long as it's predictably staying at any reasonable level and not spiking intermittently (the most common actually noticeable problem), and your audio interface has high quality drivers, you're sorted for low latency use.
Schmidi
KVRist
 
137 posts since 22 Apr, 2011, from Seattle WA

Postby Schmidi; Tue Jan 02, 2018 9:03 pm Re: What is the best (fastest, low latency) audio interface?

RME based on everything I've read online.

Personal experience: I've had very good performance with Native Instruments Komplete Audio 6 and it was a nice price too.
Check out my cloud! https://soundcloud.com/schmidi_0
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Tj Shredder
KVRist
 
132 posts since 6 Jan, 2017, from Berlin

Postby Tj Shredder; Thu Jan 04, 2018 12:49 am Re: What is the best (fastest, low latency) audio interface?

I have to chime in here, because there are coming up some missconceptions...
A latency of an audio interface is fixed. (Usually) A latency of 40 ms is high. Anything between 3 and 10 ms is low. If the latency is variable depending on software running or not running, something in the chain is causing that. I would clearly suspect the firewire card. A latency of 1370 ms is more than a second - unusable...
In a home recording studio even a high latency of 40 ms is usually not a problem. In this case, Cubase will compensate it perfectly.
Only issue is direct monitoring which most interfaces support as zero monitoring, that means, if you record, you can listen to your direct signal without having it running through the computer.
I still have two firewire interfaces (MotU and Esi) but today I would not recommend to invest in obsolete technique. Get any good USB and class compliant (does not need deicated drivers) Interface and it should just work out of the box. Try it if it doesn't work bring it back to the vendor...
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Guenon
KVRian
 
1113 posts since 17 Jun, 2005

Postby Guenon; Thu Jan 04, 2018 9:15 am Re: What is the best (fastest, low latency) audio interface?

Tj Shredder wrote:I have to chime in here, because there are coming up some missconceptions...
A latency of an audio interface is fixed. (Usually) A latency of 40 ms is high. Anything between 3 and 10 ms is low. If the latency is variable depending on software running or not running, something in the chain is causing that. I would clearly suspect the firewire card. A latency of 1370 ms is more than a second - unusable...


The latency that most of this thread has been dealing with is DPC latency, not audio buffer latency. That's why I earlier remarked that it's about microseconds (μs), not milliseconds (ms) :), and it isn't fixed but fluctuates based on how the system and its drivers work as a whole.
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