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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 ...
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]
The Encyclopedia of Recorded Sound is a reference work that, among other things, describes the history of sound recordings, from November 1877 when Edison developed the first model of a cylinder phonograph, and earlier, in 1857, when Léon Scott de Martinville invented the phonautograph. [1]
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 ...
When Joseph P. Kennedy and other investors merged Film Booking Offices of America (FBO) with the Keith-Albee-Orpheum theater chain and Radio Corporation of America; the resulting movie studio RKO Radio Pictures used RCA Photophone as its primary sound system. In March 1929, RKO released Syncopation, the first live-recorded film made with RCA ...
1917 : Leon Theremin invented the prototype of the Theremin, an instrument which is played without touching it, as it detects the proximity of the hands; 1921 : First commercial AM radio Broadcast made by KDKA, Pittsburgh, PA; 1925 : The Victor Orthophonic Victrola Phonograph was invented.