The phone makes a "Start recording" sound when the phone is locked

[Daniel177]

Hello everybody.

I'm using Galaxy s8, model SM-G950F.
The version of Android is 8.0.0 and the Samsung Experience is 9.0.

Lately, i'm facing a very disturbing issue:
When the phone is locked and placed on the desk after i didn't use it for a while, suddenly i hear a "Start recording" sound from the phone.
The same sound is also appearing when you start using Google's microphone assistant by clicking on the microphone icon as appeared in the picutre:



Any thoughts?

Thank you.