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Terrible Interference and white noice through computer - Page 2

post #16 of 36
Thread Starter 
Quote:
Originally Posted by mich41 View Post

You said that you heard noise in headphones. Was it only this constant "Realtek static" or also hissing during playback? What about headphones connected to D1?

Whenever I use the D1 now it's just hissing during playback, a new sound that I found today also is a high pitch screetch(not sure how to describe it just a high pitch noise constantly playing).  This noise isn't as often, today was the first I heard it.  The static is eliminated when I go through the D1, but the hissing during playback occurs.  Even with headphones through the D1 I get hissing, which is a shame because it sounds amazing otherwise. 

Note that the only way to get my D1 to play with optical is by selecting Realtek optical in playback devices, the option for a D1 doesn't show up unless I use USB.  

NA Blur, my Coolermaster Sirus' now sound fine, no white noise no hissing at all.  IDK what changed them from producing the white noise, but between moving stuff around they are fine now.  I no longer use the Logitech speakers, and never used their driver so that shouldn't be the issue. 

I guess the next thing to check would be getting another soundcard?  Should I try that? If so what is a good one you would recommend in the sub 200$ range.  I would not buy this until my new cables come in however because I want to see if that helps at all.

Again current setup is

PC via Foobar ->D1 via optical ->AV40s via RCA  I also tried using different music and different players, still getting hissing during playback.  It is only when I play music, otherwise they are pretty silent.  

post #17 of 36

Does it happen when you play other sounds? For instance, if you watch a youtube video, does it also have the noise added?

post #18 of 36

Sounds like some bad driver somewhere, I'd do a clean install of all drivers. Remove anything unnecessary.

post #19 of 36

Its either software problems/drivers or environmental, like excessive rf noise or electromagnetic interference. This can also be caused by a poor quality power supply.

post #20 of 36
So it's definitely not interconnect or AV40 amp.

"Realtek noise" is probably the "sound" of CPU power fluctuations bleeding to analog audio path due to poor motherboard design. If it consists mostly of a 1kHz square wave at intensity independent of output volume but (possibly) correlated with CPU load, mouse movements, scrolling etc, it's definitely this.

As for the hissing, at this point it really smells software to me. Your Realtek is an example of how "computer" analog noise sounds - it sounds nothing like this. Maybe I'm wrong, but I can't imagine any piece of computer hardware activating only during audio playback and emitting such broadband hiss through radio or power/ground lines to both D1 and onboard DAC.

This could be resampling to 8 bits, but I've no idea how one can get something like this for all media players and all soundcards in modern Windows. Did you go through all options in Control Panel?

If you have some spare CDRs, you could try booting some Linux live cd and see if the problem happens there.
Edited by mich41 - 1/20/13 at 2:42pm
post #21 of 36
Quote:
Originally Posted by Tangster View Post

Have you tried another source? Eg, iPod->AV40

 

Quote:
Originally Posted by Csirus View Post

Hmm, good idea, still seem to get some white noise, not as bad, but still noticeable.  I am getting better RCA's and speaker wire next week so I will try using those and see if I helps.

If you plug the iPod into the AUX in of the AV40's with a 3.5mm to 3.5mm cable and you STILL get White noise?

I'd say you have some funny power problems...

 

Shut everything off in the room CPU, Monitor, XBox, PS3, Cellphone etc...

Unhook all wires from the AV40 except for the Right Speaker Connection.

Plug in your AV40's to the wall outlet and hook up your iPod to it's aux in.

If you still have white noise present, take the AV40's to another part of the house to see if the problem persists.

If the sound clears up, you'll have to go through the room and unplug everything.

If the sound is still good then you will have to start plugging things back in again one by one till the problem shows up again.

I've seen power bars and badly wired wall plugs cause all kinds of strange problems.

 

If you can plug everything back in with sound still clean then I'd start with just the computer hooked up to the AV40 by itself, I don't think it's a driver problem but you have to eliminate all the other devices you have and start at the basics to diagnose what's causing this.

 

beerchug.gif 

post #22 of 36
Thread Starter 

Ya it is present in youtube videos etc.  Only when it's playing.  I'm thinking its power issues also, or my computer.

I did go through all panel things.  Eliminate all sound effects, allow application control, 24 bit 192khz etc.  I will try doing some power experiments like you stated troll and give back what I find tomorrow.  I don't seem to notice sound as bad if there at all when I plug the AV40s directly into iPhone.

post #23 of 36

If it's only during playback the issue is pre speakers, meaning in the DAC or in the computer itself with driver issues. 

 

A power issue like a ground loop or dirty power will be a constant hum through the speakers, it will not go away even when nothing is playing. If the sound comes during playback either bad settings or drivers are causing issues, possibly even a bad DAC could do it.

post #24 of 36
Quote:
Originally Posted by 65535 View Post

If it's only during playback the issue is pre speakers, meaning in the DAC or in the computer itself with driver issues. 

 

A power issue like a ground loop or dirty power will be a constant hum through the speakers, it will not go away even when nothing is playing. If the sound comes during playback either bad settings or drivers are causing issues, possibly even a bad DAC could do it.

The thing is he's changed his DAC since the original post, so that's not going to be it. I'm going to pin this on drivers and suggest a clean wipe and reinstall of all the audio drivers.

post #25 of 36

I agree, reinstalling drivers is the way to go. Are you using ASIO or WASAPI?

post #26 of 36
Thread Starter 
Quote:
Originally Posted by 65535 View Post

I agree, reinstalling drivers is the way to go. Are you using ASIO or WASAPI?

Hmm, forgive my ignorance here but I'm not quite sure.  The only sound driver I currently have installed is the realtek, and the NVidea one for my sound card.  Should I be using one of these instead, would it replace the Realtek driver?  Is it compatible with the Asus P6T?  I am at work now and plan on doing a clean installation of the audio drivers, so I'm just trying to get some advice for that before I do it.

post #27 of 36

Try rolling back the Realtek audio drivers a rev or two.

post #28 of 36
Thread Starter 

Welp, tried rolling back, uninstalling, reinstalling, tried switching from optical to just usb, tried disabling drivers, no avail...Gonna wait til new wires come in tomorrow, see if that helps, if not, going to start testing power issues.

post #29 of 36

Use USB, install these drivers, report back.

 

http://www.asio4all.com/

post #30 of 36
Thread Starter 

ASIO seemed to fix it!!! Thanks guys.

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