How to set up skype so that the interlocutor hears only sounds from the microphone on OS X?

Question

Skype

Hello, tell me how to set up skype in such a way that the interlocutor hears sounds only from my microphone and extraneous sounds are not available to him (browser / notifications / itunes / and everything else)
By default, the interlocutor hears everything that I hear
OS X Yosemite 10.10.3, skype 7.7
Thanks

Answer 1

Connect headset :)

Answer 2

I don't remember exactly but it looks like this