iAnother good feature for Skype is I simply talk without a headphone or mouthpiece..
I'm no tech master here but I believe my voice transmits through a possible mic on my web cam and of course the sound comes out of my Logitech stereo speakers..
This is my webcam, fairly old model now..
http://www.logitech.com/index.cfm/we.../3480&cl=us,en