Ferrite Bead - Hackdot

Re:Ferrite Bead by sebazzz on Thursday May 18, 2023 @12:11PM (#35990136)

I have something weird with my Edifier speakers. Maybe a ferrite bead can resolve my issues.

I have my setup as follows:

    Lenovo P1 --[hdmi]--> Samsung monitor  ---[3.5mm]----> Edifier speakers
    Desktop computer with Creative Soundcard --> [3.5mm] --> Edifier speakers
                         --[displayport]---> Samsung monitor

I don't have any noise or scratching when I work on my Lenovo. I don't have any noise or scratching when I work on my desktop without having the connection from Samsung monitor to speakers connected. However, when I have everything connected I get a slight noise and scratching sound which gets more pronounced when I start to load my GPU more, for instance when running a game.

At first I thought this was a ground loop, but the noise isn't constant, and isn't directly coming from my computer or sound card but indirectly via the Samsung monitor when I start to game and my computer draws more power.

[ Parent | on HN ]

Re:Ferrite Bead by jareklupinski on Thursday May 18, 2023 @12:20PM (#35990259)

Interesting, I have a similar issue when I work with CAD models. If I rotate a particular model in a certain way, I can almost hear a 'scratching' noise coming from my GPU as the frames draw. If the GPU is already loaded, it seems like the noise escapes to my powered sound monitors? I think it is some sort of 01010101 color rowhammering the memory at 144Hz...

[ Parent | on HN ]

Re:Ferrite Bead by mistyvales on Saturday May 20, 2023 @01:06AM (#36009527)

Coil whine?

[ Parent | on HN ]

Re:Ferrite Bead by sebazzz on Saturday May 20, 2023 @02:19PM (#36014282)

Can't be, as the noise isn't coming from my computer.

[ Parent | on HN ]