Lee De Forest in realising his achievement, the following year of 1921, he tried to focus his new technology on the film industry but his idea was resisted and De Forest Phonofilm Corporation inaudibly folded in 1925. Yet two years later "The Jazz Singer" had materialised in a multiple of theatres throughout the USA. The first full feature-length talkie, but rather absurdly, the film industry later succumbed to the same sound method De Forest first proposed to them. The 1920's saw the arrival of vacuum-tube amplifier invented by Lee De Forest first came into use. He had found a way to record sound on film using his discovery of the Audion vacuum tube which is now widely known as the Valve Amplifier. This then brought about the manifestation of a change in the transition from mechanical record turntables to the electrical turntables. Something new to the public at large igniting a world wide spread of musical paraphernalia in the field of electronics, colonizing the perfunctory of electronic music playing equipment, enabling the microphone to take over from the acoustical horns. In evident was the development of the modern 78-rpm electrical phonographic amplified player. The phonographic amplified player is a motor driven turntable that incorporated a record changing mechanism, a cartridge, and loudspeakers, similar to what is known as the rack set we associate with today. Lee De Forest's Audion Tube became known as the triode, which was an essential development that is empathic for the radio, telephones, radar's, computers, and the valve amplifiers. It can be ranked as the most powerful and influential discovery in the history annuals of American inventions. The Valve Amps one of the great inventions. |
