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The first piano was invented in Florence, Italy in 1700 by Bartolomeo Cristofori.
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Thomas Edison, the same man who invented the lightbulb, invented the first phonograph. (record player) he recorded the iconic ditty “Mary Had a Little Lamb” in 1877. the longevity of recordings was limited. His invention has been developed over time and today's model has rapidly increased in quality.
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Alexander Graham Bell invented the graphophone. It is an improvement of the graphophone. The phonograph used tinfoil to pick up sound waves, but Alexander's invention used wax because it picked up sound better.
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The Radio Corporation of America (RCA) is founded.
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There was an increase in developments in radio technology around the same time as WW1. Technological leaps in the field of electrical sound. Edwin Armstrong invented the Superheterodyne circuit. This greatly improved the quality of electronic sound recording.
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Columbia released its first LP (long-playing record). During the 30's and 40's. However, the speakers of the day simply couldn't reproduce the low frequencies that quality audio demands.
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Arnold Nudell, Cary Christie and Ken Kreisel invented the subwoofer. Subwoofers produce the lowest sound frequencies.
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Subwoofers of the 1960s and 70s could produce earth-shaking vibrations but they couldn’t quite get low enough. To fix this problem David Hall improved the subwoofer by discovering hopw to control the woofer cone movement and slashed distortion levels 20 to 30 times over while hitting the lowest of ends of the sound spectrum. He also improved them to be louder.
