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Interference in speakers when CPU usage is high.

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  • Interference in speakers when CPU usage is high.

    In my setup, I get noise through the speakers as the CPU usage goes up. I noticed this the other day when I had a full screen visualization in centrafuse and the volume was at 0. It also happens with the fancy effects from centrafuse. Is this a ground loop problem or is this just from the fact that I'm using the on board sound card?
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  • #2
    sounds like a ground loop.
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    • #3
      Originally posted by tripzero View Post
      sounds like a ground loop.
      Now the question is WHERE. I knew I had a ground loop with my screen before, but I got rid of that by powering the screen off the computer's power supply. I knew I had had one with the computer's audio output, but I put a ground loop isolator on that. None of my USB devices connect to external power sources. The only other thing is a wireless router which the computer is connected to via Ethernet cable. Hmm.... I wonder if Ethernet cables can really cause a ground loop.
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      • #4
        Paul if I may make a suggestion. When I was younger I tried ground loop isolators. I found they were a waste of money. Buy yourself a ground distribution block and some good copper ground wire, enough wire to run every ground to a central point. If you look at my install in worklogs(link in sig) on post 28 you see some clear wire. I ran every ground from the monitor, amps, and computer to that one point. I connected them all to a ground distribution block then a 4 gauge cable from there to a bolt on the seat. It works, just like it has in the 5 other stereos I have put in cars and my last cpu install. This is just my experience and I believe it will save you time and frustration. Truthfully it will save you some cash too.
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        • #5
          Originally posted by SoloconDeus View Post
          Paul if I may make a suggestion. When I was younger I tried ground loop isolators. I found they were a waste of money. Buy yourself a ground distribution block and some good copper ground wire, enough wire to run every ground to a central point. If you look at my install in worklogs(link in sig) on post 28 you see some clear wire. I ran every ground from the monitor, amps, and computer to that one point. I connected them all to a ground distribution block then a 4 gauge cable from there to a bolt on the seat. It works, just like it has in the 5 other stereos I have put in cars and my last cpu install. This is just my experience and I believe it will save you time and frustration. Truthfully it will save you some cash too.
          I already have it setup this way. Except I have 2 gauge power and ground. The screen is the only thing different because I'm powering it off of the computer's regulated PSU. For me, the ground loop isolator has made a huge difference in audio though. I'm going to have to do some more serious investigating. I'm beginning to think this is a problem with the motherboard itself.
          My Nearly Complete Car:
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          Micro Control Center... Control Your Car Across the Internet
          http://www.mp3car.com/fusion-brain/1...-internet.html

          Website: (It's a work in progress, really. All my projects have taken me from ever really developing it.)
          http://paulfurtado.com/

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