The Transcriptions of sound vibrations in air are perceptible as sound when stored onto an piece of equipment such as a phonographic disc. (Here again we can see Faraday's Law at work). There are three principal media, which has been developed for sound recording and reproduction, and they are the mechanical phonographic discs. The magnetic systems such as the cassette tape and the optical system, which enable motion picture with in-built sound tracks and the latest concept being the digital compact disc (CD). The compact disc (CD) player contains two main subsystems. 1. The audio data processing system and the servo-control system. 2. The servo, control, and display system orchestrate the mechanical operation of the player and include such items as the spindle motor, auto-tracking, lens focus, and the user interface. The audio data processing section covers all other player processes. In the first six episodes of this feature "History of the Vinyl." The author paid tribute to four great inventors scientists and physicists of the past who in the author's opinion made it all possible that lead to the advent of the vinyl records. Michael Faraday, Thomas Edison, Emil Berliner and De Forest. The English chemist and physicist Michael Faraday known for his pioneering experiments in electricity and magnetism. Michel Faraday is considered his peers as the greatest experimentalist who has ever graced this earth. Thomas Alva Edison had developed a talking apparatus, made from a cylinder tubes, which could record and reproduce sound, and he achieved his feat dating back to 1877. Thomas Edison's invention used indentations embossed into a sheet of tinfoil with an attached vibrating stylus to a diaphragm. |
