The document outlines the process of human communication, beginning with a desire or emotion that stimulates communication of a need. The communicator must know the code of oral language to select sounds to represent their ideas, which they produce using vocal mechanisms and body language. Sound and light waves then carry the message to listeners, whose brains interpret the language symbols through the ears and eyes. The communicator then watches for signs of understanding from listeners while also receiving feedback about themselves to adjust to the situation.