buzzing sound when connecting pc to tv

[rotem25]

Hello,
I have a panasonic viera tv. when connected to a pc wirelessly there's a buzzing sound from the tv.
any suggestions to solve the problem?

 

[rgd1101]

MERGED QUESTION
Question from rotem25 : "buzzing sound when projecting laptop to tv"

Hello,
I have a panasonic viera tv.
When I'm projecting my dell laptop to the tv, there's a buzzing sound coming from tv every time i play a video (in addition to the original sound of the video). the projecting is wireless through wifi.
when projecting my phone to the tv, there's no problem.
any suggestions to solve the problem?