Hello Teamsusermb,
Good day!
Thank you for posting to Microsoft Community. We are happy to help you.
Regarding this issue
Could you please try the teams web to see if the same issue?
https://teams.microsoft.com/
And usually this may cause by the microphone when detect sound
Would you also test another microphone or headset in a teams meeting ?
You can reply this if the issue persist
Thanks for your time and your understanding would be highly appreciated.
Sincerely,
Kevin | Microsoft Community Moderator