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Modern stereophonic technology was invented in the 1930s by British engineer Alan Blumlein at EMI, who patented stereo records, stereo films, and also surround sound. [7] In early 1931, Blumlein and his wife were at a local cinema.
Ring-and-spring microphones, such as this Western Electric microphone, were common during the electrical age of sound recording c. 1925–45.. The second wave of sound recording history was ushered in by the introduction of Western Electric's integrated system of electrical microphones, electronic signal amplifiers and electromechanical recorders, which was adopted by major US record labels in ...
Over the next two years, Blumlein developed stereo microphones and a stereo disc-cutting head, and recorded a number of short films with stereo soundtracks. In the 1930s, experiments with magnetic tape enabled the development of the first practical commercial sound systems that could record and reproduce high-fidelity stereophonic sound. The ...
The history of modern multitrack audio recording using magnetic tape began in 1943 with the invention of stereo tape recording, which divided the recording head into two tracks. In 1948, Chicago's Armour Research Foundation announced that its staffer, physicist Marvin Camras, had produced a three-channel machine with "three parallel magnetic ...
A Quadraphonic 8-Track Cartridge Analog, 1 ⁄ 4 inch wide tape, 3 + 3 ⁄ 4 in/s, 4-channel stereo, endless-loop cartridge 1971 Quadraphonic Vinyl Record (CD-4) (SQ Matrix) An SQ quadraphonic record Analog, introduced by CBS Records for matrix and RCA / JVC for CD-4 Recorded two tracks on both stereo channels, requiring a decoder to hear all ...
A little over 10 years ago, David Adjmi was on an airplane, listening to Led Zeppelin’s “Babe I’m Gonna Leave You,” and picturing Robert Plant recording the vocals. “It’s communicating ...
By the early 1960s, stereo had become the new standard, offering listeners an immersive experience with left and right channels, as well as a phantom "center" channel. This two-channel system introduced concepts like imaging, left-right panning, three-dimensionality, and depth, creating a lifelike soundstage that mono systems couldn't replicate.
It's July 1976 in a Northern California recording studio and the rock ‘n’ roll band cutting their latest album is exhausted and wary. The coffee machine is broken. Playwright David Adjmi tells ...