HiPad Air strange noise on video call

Hi everyone,

I have strange noise when I use video call function (WhatsApp, Google Duo, Zoom…).

When I use integrated speaker and micro I have strange noise coming from Hipad Air even if micro are cut. Sound are like glitches, wind… Independent of volume level…

Sounds recorded in video below

Sound is constant and included in this message as attachment.

When I use Bluetooth headset I have no issue at all in headphone…

Any help appreciated…

Kind rgds.

Gérald

Up… could you please help me… I’m stuck…

Thanks

Sorry to insist i need answer…problem is blocking kwowing that i use this tablet for call…
Thanks in advance