Welcome to symthic forums! We would love if you'd register!
You don't have to be expert in bit baking, everyone is more than welcome to join our community.

You are not logged in.

Posts: 43

Date of registration
: Sep 5th 2012

Platform: PC

Location: Portugal

Battlelog:

Reputation modifier: 5

  • Send private message

31

Wednesday, December 30th 2015, 5:28pm

I have an ODAC, which is USB and I'll be using this methodology to test my latency soon. Out of curiosity I'll also do an extra test with my virtual surround setup (Creative X-Fi PCI sound card surround virtualization routed to the ODAC).

  • "SteadyFlow" started this thread

Posts: 54

Date of registration
: Aug 15th 2015

Platform: PC

Battlelog:

Reputation modifier: 1

  • Send private message

32

Wednesday, December 30th 2015, 9:44pm

Also test the latency of your on-board audio (if you have one) as reference.

Don't take just one measurements - take around 10 and then average them out.

This post has been edited 1 times, last edit by "SteadyFlow" (Dec 31st 2015, 6:29am)


LucidNonsenze

Elite (Not Really)

(708)

Posts: 2,458

Date of registration
: May 14th 2012

Platform: PC

Location: Scotland.

Battlelog:

Reputation modifier: 12

  • Send private message

33

Wednesday, December 30th 2015, 11:27pm

Windows 10, Tascam US-122 MkII USB ADC/DAC.

Latency from on board MSi 990 mobo running BF4 at 44,100KHz, 24bit, 99ms.

Latency from USB sound card running BF4 at 44,100KHz, 24bit, 124ms.

Measured in Cubase at sample level. It's worth bearing in mind the Tascam is simultaneously recording and playing back audio in my case as my only mic is an XLR dynamic which could affect the latency. I suspect there may be some correlation between CPU strength and audio latency as Rezal usually keeps up to date with the latest greatest OC'ed Intel i7's.

Signature


BF4, PC.


AMD FX8350 at 4.4GHz.
AMD R9 280x MSI Twin Frozr OC'ed to 1150MHz Core. 1700MHz Memory.
8GB Crucial RAM 1600MHz CL9-9-9-24 1T.
1TB 7200 RPM HD
Logitech G400 mouse.
MSI 990 series motherboard
1920 x 1080 IPS Monitor.

  • "SteadyFlow" started this thread

Posts: 54

Date of registration
: Aug 15th 2015

Platform: PC

Battlelog:

Reputation modifier: 1

  • Send private message

34

Thursday, December 31st 2015, 6:35am

Latency should not be affected by your measurements as the same mic input is being used to measure both the cause and effect sounds (any extra latency introduced cancels out in the math).

Your USB latency is pretty decent at 124 ms compared with the on-board sound. Goes to show you not all USB DACs are the same (apart for differences in OS, Mobo, CPU, etc).

However, I still feel that 100 ms audio latency is pretty high for an FPS game. Microsoft and DICE can certainly improve on this if they wanted to. Windows 10 has implemented some features in its audio architecture to decrease latency - you can read the article here:

Low Latency Audio (Windows Drivers)

I'm going to take some measurements to see if the BF4 server tick-rate affects the audio latency.

  • "SteadyFlow" started this thread

Posts: 54

Date of registration
: Aug 15th 2015

Platform: PC

Battlelog:

Reputation modifier: 1

  • Send private message

35

Friday, January 1st 2016, 11:38am

Server tick-rate does not seem to effect audio latency in BF4.

Using a Sound Blaster Z PCIe card on Win 8.1/i7-2600 CPU with all audio effects off (SBX Surround Sound, Equalizer, etc).

I tested in actual 30 Hz and 60 Hz game servers that were empty (not the Test Range) and got identical latencies of 128 ms (taking average of 10 measurements each).