Search results
Results From The WOW.Com Content Network
A phonograph, later called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910), and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound.
Gerald Anderson Lawson (December 1, 1940 – April 9, 2011) was an American electronic engineer.Besides being one of the first African-American computer engineers in Silicon Valley, Lawson was also known for his work in designing the Fairchild Channel F video game console, leading the team that refined ROM cartridges for durable use as commercial video game cartridges.
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 ...
Jensen and Pridham founded the Commercial Wireless and Development Company in Napa, CA in 1911, moving to San Francisco, and then Oakland in 1916. In July 1917, a merger with The Sonora Phonograph Distributor Company was finalized and the Magnavox Company was born. Frank Morgan Steers was chosen as the company's first President.
Thomas Edison's work on two other innovations, the telegraph and the telephone, led to the development of the phonograph. Edison was working on a machine in 1877 that would transcribe telegraphic signals onto paper tape, which could then be transferred over the telegraph again and again. The phonograph was both in a cylinder and a disc form.
Three vinyl records of different formats, from left to right: a 12 inch LP, a 10 inch LP, a 7 inch single. A phonograph record (also known as a gramophone record, especially in British English) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.
In 1885, when the Volta Laboratory Associates were sure that they had a number of practical inventions, they filed patent applications and began to seek out investors. The Volta Graphophone Company of Alexandria, Virginia, was created on January 6, 1886, and incorporated on February 3, 1886.
The Columbia Grafonola is a brand of early 20th century American phonograph made by the Columbia Graphophone Company. Introduced in 1907, Grafonolas are internal horn alternatives to the same company's external horn Disc Graphophones. [1] [2]