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USB DAC w/ High CPU Usage

post #1 of 10
Thread Starter 

Hey guys.

 

I have an O2 Amp and DAC combo. 

 

I use this as the primary source for everything on my computer - music, movies, games etc.

 

I have noticed some sound crackles while playing a CPU intensive game.  It isn't all the time so I thought maybe it was a driver issue.  

 

I think I have just confirmed it is CPU usage related by trying to listed to a youtube video while encoding a movie.  My CPU usage was 100% on all 4 cores and the sound is constantly breaking up.  As soon as the cpu goes back to idle the music sounds great.

 

Is there any remedy for this problem?  Can I push the CPU priority higher on the ODAC?  

 

Thanks!
 

post #2 of 10

During game sessions are you listening to an audio player outside of the game?

 

If so you may want to try a different player.

 

You can swap around the priority as you have mentioned, but it may make the game play worse.

 

You should try removing the Power Management on your USB HUB devices within Device Manager.  That may help.

 

Updating the drivers could also fix the issue.  There is an ASIO driver that may actually help out.

 

You can try this fix as well:

 

http://knowhow.com/article.dhtml?articleReference=560&country=uk

 

Les us know if one of these helps!

post #3 of 10
Thread Starter 

Thanks for the suggestions.  I tried the fix.  I'll see if I notice any benefit.  Not using any "enhancements" obviously.

 

Any more info about the ASIO driver?  In the past I've used Foobar with ASIO4ALL and I found it to be a pain as Foobar was the only program on my PC that would use ASIO.  Everything else I had to switch it off or I had no sound.

 

The crackling is just from the game audio actually.  Not listening to anything in the background.

 

I should have listed my relevant PC specs.

 

Windows 7 64 bit

i5 - 2500k at 4.5ghz

8gb ram

post #4 of 10

What game per chance?

post #5 of 10
Thread Starter 
Final Fantasy 14. Only game I've noticed it with. I didn't draw the connection to cpu usage until I was encoding some go pro footage and it caused major and constant crackling.

I just assumed that the game was trying to play too many sounds at once for the dac at times. Next time I'll play I'll keep an eye on cpu usage and see if it's related.
post #6 of 10
i believe i can answer this

the problem lies with the Tenor USB receiver used, there are some manufacturers who have used Tenor chips in the past, but have changed chips due to a long history of complaints.
XMOS, Cypress & Cmedia are chips i know that can handle games with ease.
post #7 of 10
Quote:
Originally Posted by belisk View Post

i believe i can answer this

the problem lies with the Tenor USB receiver used, there are some manufacturers who have used Tenor chips in the past, but have changed chips due to a long history of complaints.
XMOS, Cypress & Cmedia are chips i know that can handle games with ease.


Yea That was one reason why I didn't like the tennor chip when I had a NFB12.0 for that same very reason. Also VIA's USB32 chip also can handle games as well.

post #8 of 10
Thread Starter 

So its a hardware limitation then?  I tried some googling and I couldn't find any confirmation that the ODAC uses the tenor chip.

 

Appreciate the replies!

post #9 of 10

I did  and it uses the TE7022  usb transfer chip.

post #10 of 10

I had the same problem with my rokit 8's except it was because of my GPU. Whenever I played any high graphical game I'd get a hum and distortion. As I was unplugging and plugging in the speakers I found I heard the same sound when I touched the 3.5mm jack. So it got me thinking what if I got dual XLR. I decided to use dual XLR and it fixed the problem. I am sure somewhere in my computer there is a ground issue but reguardless going with a balanced connection will fix the problem. 

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