Headphone Noise Elimination: Humming with 3.5mm Jack & Disappearing upon Touching PC Case

Question

I don't know if it's a good department, but I'll try. I connect the headphones with a 3.5mm jack to the computer. A hum (hum) is heard in the headphones. When I touch the housing with my finger, the noise disappears. I tried to ground the casing with a cable by connecting it to the...

Anonymous · Answer

Disable the microphone in the audio panel. In the audio settings panel, find Playback devices -> microphone. And off.

zaszumiony · Answer

I turned off the microphone and nothing has changed - there is still noise

Anonymous · Answer

Take a picture scan of what you have disabled. Do you have graphic equalizer enabled?

zaszumiony · Answer

I don't have a separate device, but the headphones (bose quietcomfort 15) have some sort of noise reduction circuitry.

Anonymous · Answer

Well, you won't find anything here.

zaszumiony · Answer

Here, i.e. where? One microphone in the screenshot was on, so I turned it off.

Anonymous · Answer

The first SoundMax setup panel shows that the microphone is turned off in the playback options. If you do not have the audio panel installed, then from the panel that you have done the scan, click on the microphone icons (you are off !!!!, not available) and then in the "Playback" window, where the microphone icon is shown, it should be like in the picture. Not checked.

zaszumiony · Answer

I have it like in your picture, but in fact, when I selected the checkbox (in the red frame), I could hear a completely different noise, much louder.

So that's not the cause. The noise I hear is steady, quiet and I can withstand it, but when I touch the housing with my finger it disappears, so it can probably be eliminated somehow.

Maciek051996 · Answer

So your computer is connected to a socket without a pin.

Anonymous · Answer

You have not written whether it is a laptop or a desktop. I conclude that it is a laptop. Try the settings in the panels shown in the pictures above. If there is an obvious difference on one of the sliders, then it will be possible to determine where to look for the problem. One more thing. Disconnect from these sockets, apart from the speakers, all cables, webcams with a microphone (if it's not a laptop). Of course, without any extension cords.

zaszumiony · Answer

It's about comp. stationary, the socket is on the extension cord and has a pin.

The same headphones do not have any noise when connected to a laptop. I did an experiment and plugged my laptop with headphones into the same extender as the PC - there was no noise.

I tried with different sliders and there is one thing: if I set the balance between "L" and "R" the same (eg 50), then when playing, for example, this video: https://www.youtube.com/watch?v = pco91kroVgQ, I don't hear what Lady Gaga is singing at all

, but you can hear music, i.e. the headphones filter the frequencies of the human voice (I think), and they probably shouldn't. If I change the balance to, for example, L = 18, R = 100, the voice is heard normally.

Scyphio · Answer

Plug these headphones into the socket on the computer and try to move the plug a little. Maybe the socket broke.

Headphone Noise Elimination: Humming with 3.5mm Jack & Disappearing upon Touching PC Case

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