Weird Noise whenever I send message in chat

Whenever I send a message over TeamSpeak, there is a small noise at the end of the confirmation sound (the little beep that tells that message was delivered successfully).

I’ve recorded my screen, and I’m sharing it below.

It’s totally random, it doesn’t happen always. I’m using SteelSeries Arctis 5 headset. But since the noise is captured in the recording, I don’t think it is my headset’s fault.

Does it happen only with teamspeak?
Have you tried to open the sound manager or the windows volume mixer? Maybe it’s something else. Personally never had similar issues.

It doesn’t happen in any other software. And what should I look for in the sound manager?