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Stereophonic sound, or more commonly stereo, is a method of sound reproduction that recreates a multi-directional, 3-dimensional audible perspective. This is usually achieved by using two independent audio channels through a configuration of two loudspeakers (or stereo headphones ) in such a way as to create the impression of sound heard from ...
(The first stereo recordings, on disks, had been made in the 1930s, but were never issued commercially.) Stereo (either true, two-microphone stereo or multi mixed) quickly became the norm for commercial classical recordings and radio broadcasts, although many pop music and jazz recordings continued to be issued in monophonic sound until the mid ...
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 ...
The experiments with stereo during the 1930s and 1940s were hampered by problems with synchronization. A major breakthrough in practical stereo sound was made by Bell Laboratories, who in 1937 demonstrated a practical system of two-channel stereo, using dual optical sound tracks on film. [28]
RCA Photophone was the trade name given to one of four major competing technologies that emerged in the American film industry in the late 1920s for synchronizing electrically recorded audio to a motion picture image.
The researchers invented the exponential horn, and, on realizing that it needed to be nine feet long to reproduce the lowest frequencies on the new discs, designed a method for "folding" the horn into a cabinet of practical size. The design was released by Victor as the "Orthophonic" Victrola in the autumn of 1925.
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 ...
Cook Records was a record label founded by Emory Cook (1913–2002), an audio engineer and inventor. From 1952 to 1966, Cook used his Sounds of our Times and Cook Laboratories record labels to demonstrate his philosophy about sound, recording equipment, and manufacturing techniques.