[jp_zer0]

When I use the uDAC with my windows 7 machines, I get this strange clipping/crackling sound like every 10-20 seconds or so. No matter what media player I use, whatever protocol, it doesn't go away. Now I tried the uDAC on an old XP computer and the glitches just went away.

Anyone have any idea of what is up here? It's driving me mad!

 

[HeatFan12]

Quote:

Originally Posted by jp_zer0 /img/forum/go_quote.gif When I use the uDAC with my windows 7 machines, I get this strange clipping/crackling sound like every 10-20 seconds or so. No matter what media player I use, whatever protocol, it doesn't go away. Now I tried the uDAC on an old XP computer and the glitches just went away. Anyone have any idea of what is up here? It's driving me mad!

I believe a poster in the uDac thread gave a solution for said problem...Don't know if you saw it...

 

[jp_zer0]

Quote:

Originally Posted by HeatFan12 /img/forum/go_quote.gif I beleive a poster in the uDac thread gave a solution for said problem...Don't know if you saw it...

the communications tab? ye, I tried "do nothing". Didn't help.

 

[HeatFan12]

That would be it...My uDac arrived yesterday, but due to work have not opened the package yet. I'll plug it in to my Windows 7 laptop first, see if I have the same prob...

You advised you used several players?..Foobar, Winamp, iTunes?

 

[jp_zer0]

Quote:

Originally Posted by HeatFan12 /img/forum/go_quote.gif That would be it...My uDac arrived yesterday, but due to work have not opened the package yet. I'll plug it in to my Windows 7 laptop first, see if I have the same prob... You advised you used several players?..Foobar, Winamp, iTunes?

I used Foobar, WMP, KMP, MPC and quicktime player.

 

[HeatFan12]

Quote:

Originally Posted by jp_zer0 /img/forum/go_quote.gif I used Foobar, WMP, KMP, MPC and quicktime player.

...Definitely a common OS prob across the board....I read various head-fiers using it on 7 with no probs...When I unpack it later, I'll keep you posted. One of my usb portable amps had that problem with Vista. It was a while back but if I remember, it was one of my usb ports that did not like that amp...I bought a usb hub that Monoprice sells that is very good and took care of it.

Are you using the dac and amp or dac only with another amp?

 

[jp_zer0]

Quote:

Originally Posted by HeatFan12 /img/forum/go_quote.gif ...Definitely a common OS prob across the board....I read various head-fiers using it on 7 with no probs...When I unpack it later, I'll keep you posted. One of my usb portable amps had that problem with Vista. It was a while back but if I remember, it was one of my usb ports that did not like that amp...I bought a usb hub that Monoprice sells that is very good and took care of it. Are you using the dac and amp or dac only with another amp?

Dac and amp. Also tried the RCA out with an RCA -> 2.5mm adapter.

 

[Mr. B]

I've been throwing this out there in every Win 7/DAC thread because it solved my problem. Disabling Intel Speedstep/AMD Cool'n'Quiet dynamic cpu frequency scaling may solve the problem.

 

[AmanGeorge]

Have you tried turning the gain down on the uDAC?

 

[Ham Sandwich]

Try the DAC in a different USB port. Some external ports on some computers are actually connected to a hub and share the bus with other internal USB devices (like keyboard, mouse, trackpad, camera, etc).

If that doesn't help then run the DPC Latency Checker. If you get red bars in the latency checker you'll likely be getting audio glitches as well with a USB DAC (or even the onboard sound). The web page for the DPC latency checker explains how to hunt down what is causing the problem. Prime candidates are wireless network drivers. Disable devices till the glitches go away then look for updated drivers for the problem devices.

Microsoft did some work to decrease DPC latency problems in Windows 7. Technically, theoretically, Windows 7 should have fewer audio glitch problems than XP. But all depends on drivers and devices installed.

 

[.Sup]

On wireless?

 

[HeatFan12]

Hey jp,

Listening to the uDac now w/ my Windows 7 laptop, Foobar and I'm not experiencing any of the problems. I tried WASAPI and KS and it sounds very good. I made no adjustments, just plug and play...

 

[jp_zer0]

Quote:

Originally Posted by Mr. B /img/forum/go_quote.gif I've been throwing this out there in every Win 7/DAC thread because it solved my problem. Disabling Intel Speedstep/AMD Cool'n'Quiet dynamic cpu frequency scaling may solve the problem.

FIXED!

Thank you so much man!

Thanks also to the others who helped diagnostics.

 

[steven_1026]

Not really the same problem, but I am also using Win 7 and randomly the volume on the right will go quiet, not mute. It's only occured when I leave my computer for a while, never happened while I'm using it. It gets fixed when I restart my computer. Anyone else experience this?
I'm using a Xonar DX soundcard btw.

 

[JazzVinyl]

I have the same problem with a Dell 1525 and Vista. Our problem was the Wireless network card. If you disable it, the intermittent crackle goes away. Fine if your close enough to the router to be hard wired in. The moment you turn the wireless card back on, bap, here comes the crackle again.

Many Dell issued "fixes" didn't fix it. The only thing we have found that really will cure it is to turn the wireless card off (no fun).

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