Existing comment:
Edison's Talking Machine
In 1877 Thomas Edison invented the first device to ever record and play back sound. Soundwaves captured by a mouthpiece caused a stylus attached to a diaphragm to move up and down, making indentations on a sheet of tinfoil wrapped around a rotating drum. In playback, the stylus traced those indentations, causing the diaphragm to recreate a recognizable version of the original sound. |