STEREO: Government Auctions Blog GovernmentAuctions.orgRhttp://www.governmentauctions.org/uploaded_images/stereo-756179.jpg
NAD Electronics antique phonograph
The phonograph is a device developed in 1877 for the mechanical saving and duplication of audio. In its later forms it is also called a gramophone (as a trademark since 1887, as a generic name since c. 1900). The audio vibration waveforms are recorded as matching physical deviations of an spiral groove imprinted, etched, incised, or impressed in to the surface of your rotating cylinder or disc, called a "record". To recreate the sound, the surface is in the same way rotated while a playback stylus traces the groove and is therefore vibrated because of it, very reproducing the recorded sound faintly. In early acoustic phonographs, the stylus vibrated a diaphragm which produced sound waves which were coupled to the open air by having a flaring horn, or directly to the listener's ears through stethoscope-type earphones. In later electric phonographs (also called record players (since 1940s) or, lately, turntables), the motions of the stylus are converted into an analogous electrical signal by a transducer, altered back into sound by the loudspeaker then.
The phonograph was invented in 1877 by Thomas Edison. While other inventors possessed produced devices that can record sounds, Edison's phonograph was the first to be able to reproduce the registered audio. His phonograph at first recorded audio onto a tinfoil sheet twisted around a rotating cylinder. A stylus responding to sound vibrations produced an up and down or hill-and-dale groove in the foil. Alexander Graham Bell's Volta Laboratory made several improvements in the 1880s, like the use of wax-coated cardboard cylinders, and a cutting stylus that moved from side to side in a "zig zag" groove surrounding the record.
In the 1890s, Emile Berliner initiated the move from phonograph cylinders to even discs with a spiral groove running from the periphery to near to the center. Later improvements through the entire years included adjustments to the turntable and its own drive system, the needle or stylus, and the equalization and sound systems.
The disc phonograph record was the dominant audio recording format throughout most of the 20th century. From the mid-1980s on, phonograph use on a standard record player declined because of the rise of the cassette tape sharply, compact disc and other digital tracking formats. Records are a favorite format for some audiophiles and DJs still. Vinyl records are used by some DJs and musicians in their concert performances still. Musicians continue to release their recordings on vinyl records. The initial recordings of musicians are re-issued on vinyl sometimes.
Usage of terminology is not even across the English-speaking world (see below). In more modern usage, the playback device is categorised as a "turntable", "record player", or "record changer". When found in conjunction with a mixer as part of a DJ setup, turntables are often called "decks".
The word phonograph ("sound writing") was derived from the Greek words ???? (phon?, "sound" or "voice") and ????? (graph?, "writing"). The similar related conditions gramophone (from the Greek ?????? gramma "letter" and ???? ph?n? "words") and graphophone have similar root meanings. The roots were already familiar from existing 19th-century words such as photograph ("light writing"), telegraph ("distant writing"), and mobile phone ("distant sound"). The brand new term might have been inspired by the prevailing words phonographic and phonography, which described a system of phonetic shorthand; in 1852 The New York Times carried an ad for "Professor Webster's phonographic class", and in 1859 the brand new York State Teachers Relationship tabled a action to "employ a phonographic recorder" to track record its meetings.
Arguably, any device used to track record sound or reproduce recorded audio could be called a type of "phonograph", however in common practice the indicated term has come to suggest traditional solutions of audio documenting, concerning audio-frequency modulations of an physical groove or trace.
In the late 19th and early 20th hundreds of years, "Phonograph", "Gramophone", "Graphophone", "Zonophone" and the like were still brand names specific to various manufacturers of sometimes completely different (i.e. cylinder and disc) machines; so extensive use was made of the general term "talking machine", especially in print. "Talking machine" had earlier been used to make reference to complicated devices which produced a crude imitation of speech, by simulating the workings of the vocal cords, tongue, and lips - a potential way to obtain distress both and now then.
In British British, "gramophone" may make reference to any sound-reproducing machine using disk records, which were launched and popularized in the united kingdom by the Gramophone Company. Originally, "gramophone" was a proprietary trademark of that company and any use of the name by competing makers of disc records was vigorously prosecuted in the courts, however in 1910 an English court decision decreed so it had become a generic term; it's been so used in the UK & most Commonwealth countries since. The word "phonograph" was usually limited to machines that used cylinder records.
"Gramophone" generally referred to a wind-up machine. After the benefits of the softer vinyl fabric files, 33 1/3-rpm LPs (long-playing information) and 45-rpm "single" or two-song documents, and EPs (extended-play recordings), the normal name became "record player" or "turntable". Usually the home record player was part of something that included a radio (radiogram) and, later, might play audiotape cassettes also. From about 1960, such a system began to certainly be a "hi-fi" (high-fidelity, monophonic) or a "stereo" (most systems being stereophonic by the mid-1960s).
In Australian British, "record player" was the term; "turntable" was a more technical term; "gramophone" was restricted to the old mechanised (i.e., wind-up) players; and "phonograph" was used as with British English.
Rare Find Pioneer PL15 TT amp; Pioneer CS15 Spks Page 7
http://i68.photobucket.com/albums/i10/santhoshl/My%20second%20audio%20system/bb2a0494.jpgVintage turntable wood Ortofon 2M Blue Living Room Pinterest Blue
https://s-media-cache-ak0.pinimg.com/236x/28/b7/8e/28b78efa8b8ea37d5e87ef542c536fbe.jpg1275 x 1650 png 165kB, Comparison of Financial Statements McDonald39;s
http://img.docstoccdn.com/thumb/orig/38377844.pngOIP.M7f548263ca07e2011fe5ba5f847d6b4aH0
10F392B369B75327BFEC188D8A22CA2D5EF2C88DBEhttp://dict.space.4goo.net/dict?q=stereo
Embed Our image to your website
ThumbnailImageEmbed Our image to a Forum
ThumbnailImage