You can see how a loop is created in the diagram below. In the simplest terms, this creates a single-loop antenna that just loves to suck in various types of noise via electromagnetic induction. It could also be a much quieter, yet equally annoying buzz or hum that you only hear when the room is otherwise quiet.Ī ground loop typically occurs when one or more pieces of your entertainment system are plugged into the AC (alternating current) at different locations, then connected together by electrical (versus optical) signal cables-RCA, HDMI, composite, component-whose shielding is connected to ground. The most common manifestations are a loud buzz or hum coming through the speakers, or scrolling bands on a TV screen.
The number-one cause of unusual audio noise and weird video is the ground loop, simply because it’s so darned easy to create.
0 kommentar(er)
