Not exact matches
Some minor
issues in your Windows Audio Service can also be the reason of
microphone bugs and restarting it is the best possible
fix.
Some users have managed to
fix the
issue by getting the
microphone component un-stuck by applying heat onto the phone.
Other than enabling the Visual Core, the new Android 8.1 DP2 also brings
fixes to the nagging
microphone issues faced by Google Pixel 2 XL users.
Although not confirmed, the publication also notes that this version is possibly the one that has all the hardware
issues, including the
microphone,
fixed.