Microphone buzz issue or/and recommendation - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 04-18-2020, 04:55 PM - Thread Starter
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Microphone buzz issue or/and recommendation

Hello,

Having an issue with a low frequency buzz when using a microphone.
TUF B360-PLUS GAMING (Realtek ALC887), Seasonic 620 Bronze, Xonar DGX, Windows 10 x64. For microphone I tried a Zalman ZM-MIC1, some generic headset with a microphone, and hands free headset.

If I grab the microphone in my hand, the buzzing increases.
Tried attaching the PC to a UPS, no change.
Also tried Unix drivers, on board sound card with the DGX removed, as well as the planar HDD"s disconnected.
Removed power cable from monitor.
The extension cord has just the monitor and the PC.

On the onboard card the buzzing was lower, but so was the volume. Tried the effects/settings of the onboard card to reduce the issue, no change.
On the DGX decreasing the microphone volume reduced the buzzing, but where it went away the microphone was too quiet.

What would be the cheapest solution? I understand that USB microphones can also buzz, because of lack of shielding?
Ideally I would prefer an attachable type, like Antlion models. I see they have a USB one. I'd like to attach them to headphones, which are comfortable and would like to keep (HD380Pro).
Or should I go for an external USB card, which would be connected to a microphone?

With monitoring on, the buzzing can be seen in the graph below:

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post #2 of 3 Old 04-20-2020, 01:26 PM - Thread Starter
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If I were to get a USB microphone, since it draws it power from the PC, would it still have the buzzing?
Not sure how USB draws power vs. the Xonar via PCI E.
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post #3 of 3 Old 06-18-2020, 02:42 PM - Thread Starter
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Got an Antlion USB. The buzzing is still there, but substantially reduced.
Also got a shielded USB extension cable and some ferrite beads for the USB cable and the power cable, but no change.
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