Acoustic Recording (Also known as Mechanical Recording)

Acoustic Recording (Also known as Mechanical Recording) The method of recording in which all energy comes from the sound waves themselves; it was used from the earliest days of Edison and Berliner until the onset of electrical recording in 1925. Sounds to be recorded were sung, played, or spoken into a horn, which activated a diaphragm attached to a stylus. The stylus transferred the vibration patterns to the surface of a cylinder or a disc. To concentrate this acoustic energy sufficiently for…