TS3 generates sounds, even disconnected to any server

Hi everyone,

I don't know why, but TS3 client always makes a weird sound on my left ear, even disconnected to any server.
It's like some "bip bip", pretty fast and pretty acute.
If I start the client, the sound appears. If I close, the sound disappears.

This is not the sound to tel me my microphone is muted, I checked. (my microphone is not muted ^^)

My configuration :
- Windows 8.1
- TS3 Client v3.0.18.2
- Casque TeckNet HS800

Do you have any idea about the origin of the sound ?

Regards,
LeNouveau

PS : Sorry for bad english ^^'

TS3 generates sounds, even disconnected to any server