this post was submitted on 22 Sep 2023
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Steam Deck
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It’s not a UI sounds, it’s a static sound, same as if you plug speaker when on.
Is the sound is coming from the built-in speaker on the deck when you start a game, or from external speakers when you plug them in?
If this happens when you start a game, and it is with the internal speakers, that points to a passive component failure, like a capacitor or inductor that is usually on a sound line. (Edit: Also, a loose wire could make an LC circuit very noisy, temporarily.)
If this happens when you plug external speakers in, there is not much you can do besides get a high quality speaker jack that will only reduce the problem, not solve it. To completely eliminate noise from speaker jacks would require some kind of electronic soft-switching device.
Can you post steps to replicate the problem?
It seems that English is not your first language, so I am just asking for a little more clarification. Your descriptions conflict a little bit, but that is ok! :)
Or, type a full description in your language and I can use a translator. Whatever is easy.
I made a small video to show it. (Video is upside down for some reason) : NB : Wetransfer Link.
To describe a bit more, you can see the setup in this picture.
I didn't had any problem with the speaker when there were plugged in my PC.
You can say the parasite sound is playing when there were no sound for a "long" time.
Cool. The video is still getting processed, and I won't be able to view it until the morning. (It's 3AM my time, so sleep time for me.)
Just looking at the picture though, I am going to speculate for fun: The audio cable is poorly shielded and is also very close to small, but relatively powerful, transmitting antennas. I suspect you might be hearing the Bluetooth/WiFi handshakes. (Channel searching specifically can tickle quite a few harmonic frequencies.)
The video will not load for me for some reason.
Got baited by the website, since I don't have any account, I made a wetransfer link. : https://we.tl/t-7Bd2PnUvG9