Strange CPU-noise coming from USB Soundcard

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SanderV

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Feb 3, 2015
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Hello everyone, I sure hope you guys can help me! I've had some trouble with my PC for the last couple of months. When I hook up my USB-Soundcard (Focusrite Scarlett 18i8) I get a real strange CPU-crackling sound.

I have tried muting all my outputs, making changes in BIOS and I tried changing power outlets in my house, but nothing seems to work! Only this is when I fondled a bit with the power saving settings, the noise became less when idling than before. But when I use a program everything goes back to how it was.

I use this PC for a home recording studio so I'd like to get this solved asap :S. Anyways, if someone is wondering what the static sounds like, I'd be happy to upload a sample, but since I don't know how to upload a sample on here, you may have to talk me through that as well.

My setup is the following:
Windows 7 Home Premium 64 bit
Gigabyte GA-970A-DS3P Motherboard
AMD FX-8350 CPU (8-core)
2x Corsair Vengeance 8GB DDR3 RAM
AMD Radeon R240 Graphics Card
Onboard Audio 7.1
Asus PCE N15 300N Wireless network Card
 
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Wait did you mean I should buy a different soundcard? Because I don't see why.. The soundcard I bought from Focusright works like a dream and I need it to record all of my instruments. It is not even mounted in my PC, because it's an external one. Also, I do not have a PCI-e soundcard in my PC. I only have onboard audio 7.1, which, as far as I know, is not the same as a PCI-e soundcard. Meanwhile I did try to disconnect the audio plug on my motherboard, which did not have any effect on the static. Any more ideas?
 
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Since I don't have this problem when I hook it op to my laptop, and when I put my headphones in the DAC the noise is also there (which eliminates the speakers as the problem) the only other thing this DAC is hooked up to is my PC. So it must come from my PC.
 
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It might be that you computer is throwing off EMI so that the DAC picks it up. Which laptops won't throw off nearly as much, as well the Laptop would have more power going to the USB ports that a PC. Could you try plugging it into the front ports of your computer?
 
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I didn't try it yet, but since this is an easy task of course, I tried it. Unfortunately, my front USB-buses are both USB 3.0. The driver does not immediately crash, but when I listened to the DAC plugged in the front USB-bus it didn't get rid of the statics, or made it any less, unfortunately.
 
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Well someone is salty, and that doesn't contribute to the conversation at all? So bye?
 
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Okay, MisterSprinkles, I just need to say my first reaction was like that too, it seemed like he was jumping to a conclusion too quickly, but he is trying to help me now. And I have searched on google for my problem a lot, but couldn't find the topic you just linked. The noise that guy describes sounds exactly the same as my noise (also the sample helped). It really seems to come down to a ground loop, then. Unfortunately. Since my budget is fairly small and a USB ground loop isolator quickly exceeds the 30 dollar threshold I looked at a ground loop isolator in my cables. Do you think a ground loop isolator in my cables would have the same effect as a USB groundloop isolator?
 
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