telegraphone

device

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Last updated

June 17, 2026

Quick Summary

The telegraphone was an early magnetic recorder invented by Danish engineer Valdemar Poulsen in 1898. This device was capable of registering human speech by magnetizing a steel wire. A working model was displayed at the Paris Exposition in 1900, and an improved version was manufactured by the American Telegraphone Company starting in 1903. The telegraphone could record for 30 minutes on a moving steel piano-wire, but it did not achieve wide application. It is considered a forerunner of modern magnetic sound recorders.12

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magnetic recording
…introduced a machine called the telegraphone that recorded speech magnetically on steel wire.
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…introduced a machine called the telegraphone that recorded speech magnetically on steel wire.
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Valdemar Poulsen
…working there, he invented the telegraphone, an electromagnetic phonograph capable of registering human speech by the alternating magnetization of a wire. He applied for a patent on this device, a forerunner of the modern magnetic sound recorder, in 1898. A working model created great interest at the Paris Exposition in…
Read More
…working there, he invented the telegraphone, an electromagnetic phonograph capable of registering human speech by the alternating magnetization of a wire. He applied for a patent on this device, a forerunner of the modern magnetic sound recorder, in 1898. A working model created great interest at the Paris Exposition in…
Read More