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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.
Western Electric Co., Inc. was an American electrical engineering and manufacturing company that operated from 1869 to 1996. A subsidiary of the AT&T Corporation for most of its lifespan, Western Electric was the primary manufacturer, supplier, and purchasing agent for all telephone equipment for the Bell System from 1881 until 1984, when the Bell System was dismantled.
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 ...
In 1930 AT&T's Western Electric established a division to install and service loudspeakers and electronic products for motion-picture use. Named Electrical Research Products, Inc. and commonly referred to by the acronym ERPI, it became the target of an anti-trust suit brought by Stanley K. Oldden. [10]
E-plane horn (fig. b) – A sectoral horn flared in the direction of the electric or E-field in the waveguide. H-plane horn (fig. c) – A sectoral horn flared in the direction of the magnetic or H-field in the waveguide. Conical horn (fig. d) – A horn in the shape of a cone, with a circular cross section. They are used with cylindrical ...
Western Electric named them Diaphonics, and RCA used them in their RCA Photophones. Lansing Manufacturing was the only firm selling them as Shearer Horns. In 1936, the Shearer Horn received the Academy Scientific and Technical Award from the Academy of Motion Picture Arts and Sciences.
A horn loudspeaker is a loudspeaker or loudspeaker element which uses an acoustic horn to increase the overall efficiency of the driving element(s). A common form (right) consists of a compression driver which produces sound waves with a small metal diaphragm vibrated by an electromagnet, attached to a horn, a flaring duct to conduct the sound waves to the open air.
In 1929, Western Electric entered as a market competitor for early cinema sound systems. It created the Western Electric Universal Base, a device by which early silent cinema projectors could be adapted to screen sound films. [citation needed] Western Electric designed a wide-audio-range horn loudspeaker for cinemas.
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