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Gianni Bettini (1860, Novara – 27 February 1938, San Remo) was a gentleman inventor and a pioneer audiophile who invented several phonograph improvements. [1] He is best known for having made the first (and in some cases only) recordings of the voices of several very famous singers and other celebrities of the 1890s. [2]
A photo of a theatrical DTS CD-ROM disc used for the original 1993 release of Jurassic Park Digital. Digital Theatre System (DTS), Sony Dynamic Digital Sound (SDDS), MPEG-1 Audio Layer III (MP3) 1994 TwinVQ: Digital. 1995 RealAudio [3] 1997 DTS-CD: Digital. DTS audio 1998 WavPack (file format) Digital.
It was approved in early 1916 with their first phonograph models and records appearing in their Spring 1916 catalog. [ 1 ] [ 7 ] Beginning in the 1920s, the brand was expanded to include Silvertone radios and again expanded in the 1930s to musical instruments, superseding the previously-used Oxford branding.
Thomas A. Edison invented the phonograph, the first device for recording and playing back sound, in 1877.After patenting the invention and benefiting from the publicity and acclaim it received, Edison and his laboratory turned their attention to the commercial development of electric lighting, playing no further role in the development of the phonograph for nearly a decade.
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.
Later improvements through the years included modifications to the turntable and its drive system, stylus, pickup system, and the sound and equalization systems. The disc phonograph record was the dominant commercial audio distribution format throughout most of the 20th century, and phonographs became the first example of home audio that people ...
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.
The first model was the Garrard 301. Oil and grease bearing versions were made. The later 401 was nearly identical mechanically, but with a redesigned exterior, more powerful motor, slightly different eddy current braking speed control and different turntable thrust bearing.