Megaphones & Bullhorns Get Your Words Heard

What Are Megaphones? Megaphones, also known as bullhorns, are instantly recognizable because of their distinctive conical or bell shape. For thousands of years,  the human voice has been projected by megaphones. This is due to the natural acoustic properties of their parabaloid shape, which  focuses sound waves to make them travel further, but in a narrow arc. What is relatively… Read the rest