The history of sound recording - which has progressed in waves, driven by the invention and commercial … See more

The earliest practical recording technologies were entirely mechanical devices. These recorders typically used a large conical horn to collect and focus the physical air pressure of the sound waves produced b… See more

The earliest method of sound recording and reproduction involved the live recording of a performance directly to a recording medium by an entirely mechanical process, often called "acoustical recording". In the standard pr… See more

Until the mid-1920s records were played on purely mechanical record players usually powered by a wind-up spring motor. The sound was "amplified" by an external or internal horn that was coupled to the diaphragm… See more

Wire recording or magnetic wire recording is an analog type of audio storage in which a magnetic recording is made on thin steel or stainless steel wire.
The wire is pulled rapidly across a recording h… See more