
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
Microphones and Loudspeakers as Musical Instruments
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
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