Depends on what "computer noise" means. You have to isolate what is causing the noise. Substitute pieces of gear one at a time, troubleshoot. If it is the Firepod, make sure you swap it out within your warranty period. One day outside and you're S.O.L.
That's electro-magnetic radiation. When you move the mouse it's updating the screen. Try this test. Find a really long website that has plenty of scroll-bar resource with a maximized window. Use the page up and page down or the arrow keys to scroll. If you hear the same noise you're getting emr from the monitor.
I have the same issue. i have not tried this solution but supposedly those clip-on rf adapters (like you see on computer power peripheral power supplies) supposedly help.