Week 5: The of Science Sound

Sound and its propagation have always been a topic of scientific research. Consider that the Romans built amphitheaters that held upwards of one hundred thousand people and they are known to have employed methods of geometry for instance to improve the intelligibility of someone speaking from the stage. Throughout time man has been trying to extend the range of the human voice or music to a larger audience.  Consider the megaphone.

By coupling the acoustic impedance of your vocal chords to a larger mass of air the acoustic energy is increased in a specific direction. During this week's class, we will examine the physical constants of sound, some of the science behind sound propagation, and modern advances in sound reinforcement. Consider, via the internet your voice can be heard around the world instantaneously. As little as 50 years ago, not even satellite technology could connect the entire globe without great expense and resources! Now all you need is a webcam.