Graphophone

The Graphophone was an early sound recording device, invented by Alexander Graham Bell in 1886. It was a type of phonograph that used wax records. The sound was focused by a horn onto a diaphragm, causing it to vibrate. These vibrations were transferred to a stylus, which modulated its movement as it traced a helical path on a rotating, wax-coated cylinder.123

Thomas Edison is credited with inventing the first phonograph in 1877, which used indentations on a tinfoil-wrapped cylinder. Emil Berliner later introduced the gramophone in 1887, which used a disc instead of a cylinder, offering advantages in manufacturing. Early recordings were primarily acoustic, but advancements in microphones and electronic recording processes in the 1920s significantly improved sound quality.456