Maker GOOD VIBRATIONS:
Bob Knetzger
GOOD VIBRATIONS:
GROOVY MECHANICAL SOUND PLAYERS
A look back at the all-mechanical marvels that made fun sounds for over 100 years.
Long before iPods, MP3s, or even electricity, people recorded and listened to music and speech by all-mechanical, analog means. Thomas Edison’s first important invention after setting up shop in Menlo Park, N.J., was the practical phonograph. His 1877 design featured a sharp stylus that pressed into a tinfoil cylinder. By shouting into a horn as he turned a crank, Edison caused the vibrations of his voice to make a pattern of indentations in a corkscrew groove along ...
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