Review on Stardrift 10-Pack 13Mm Diameter Snap On Ferrite Core Bead Choke Ring Cord RFI EMI Noise Suppressor Filter For HDMI DVI VGA Cable Black (13MM) by Charles Lewellen

I was hearing a very strong hissing/humming from my PC speakers, especially when using 3D applications. I found that my onboard audio was picking up interference from my graphics card, so the static noise tripled when running something graphics-intensive. Adding it to my audio cable reduced the noise drastically. It didn't completely eliminate the hiss (I really have to crank the volume up to still hear a slight buzz), but there's no buzz from 0-70% of the master volume. I usually listen 50%. As a result, I got a good quality special sound card that completely eliminated any noise.