When you scream for someone’s attention you might hold both of your hands around your mouth to direct the sound waves leaving your mouth towards that person. This horn-like … read more
Megaphone Music I
112 loud-speaking telephone receivers and other early sound reinforcement systems by Ralf Ehlert
The picture above was made in 1919 during the Victory Liberty Loan and the lamp-like objects hanging above the crowd are so-called loud-speaking telephone receivers. The crowd had “the unusual sensation of having spoken messages come to them out of … read more