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Asked on Super User by Franck Dernoncourt, 3 years ago. No reply there for at least a week.

Why is there a random noise in my Bose QC35 II headphones when connected to Windows 10 via Bluetooth, when the microphone is on?

My Bose QC35 II headphone is connected to Windows 10 via Bluetooth: When the microphone is on, there is a random noise in my Bose QC35 II headphones. Why? I don't have this issue when my Bose QC35 II headphones are connected to an iPad, iPhone, Galaxy S9 or Pixel 6. E.g., I hear the noise when going to Sound - Recording: or in Audacity when recording: or in Chrome when using the microphone, e.g. on https://voice.google.com/ BlueTooth chip that is inside my machine (MSI GS76 Stealth 11UH laptop), via HWiNFO v7.34 : [Port14] : Intel, PID=800A [Device Information] Device Manufacturer: Intel Produ

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Why is there a random noise in my Bose QC35 II headphones when connected to Windows 10 via Bluetooth, when the microphone is on?

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Question by Franck Dernoncourt on Super User, licensed CC BY-SA. We show a short excerpt and link to the original thread as credit.