 Welcome to this unit, which discusses the principles of human speech from the production of a sound wave to the transmission of it through the air to its perception by a listener. In the virtual session you can use the question sheet as default guidance, but you can also go through all components on your own. The main goal is to find out the properties of communication in general and of human speech in particular. Furthermore, this unit defines the branches of phonetics. The mastery worksheet is a simple multiple choice test with questions about communication and speech. After the virtual session you should not find this test difficult at all. And the practical is all about speech, about speech production as well as perception. Easy to manage. So all in all challenging for a start but simple enough to cope with. Good luck.