turntable

A phonograph, later called a gramophone, and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound. The sound vibration waveforms are recorded as corresponding physical deviations of a helical or spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a '' record''. To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and is therefore vibrated by it, faintly reproducing the recorded sound. In early acoustic phonographs, the stylus vibrated a diaphragm that produced sound waves coupled to the open air through a flaring horn, or directly to the listener's ears through stethoscope-type earphones.

The phonograph was invented in 1877 by Thomas Edison; its use would rise the following year. Alexander Graham Bell's Volta Laboratory made several improvements in the 1880s and introduced the graphophone, including the use of wax-coated cardboard cylinders and a cutting stylus that moved from side to side in a zigzag groove around the record. In the 1890s, Emile Berliner initiated the transition from phonograph cylinders to flat discs with a spiral groove running from the periphery to near the centre, coining the term ''gramophone'' for disc record players, which is predominantly used in many languages. 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 owned and used at their residences. In the 1960s, the use of 8-track cartridges and cassette tapes were introduced as alternatives. By the late 1980s, phonograph use had declined sharply due to the popularity of cassettes and the rise of the compact disc. However, records have undergone a revival since the late 2000s.

Terminology

The terminology used to describe record-playing devices is not uniform across the English-speaking world. In modern contexts, the playback device is often referred to as a "turntable", "record player", or " record changer". Each of these terms denotes distinct items. When integrated into a DJ setup with a mixer, turntables are colloquially known as "decks". In later versions of electric phonographs, commonly known since the 1940s as record players or turntables, the movements of the stylus are transformed into an electrical signal by a transducer. This signal is then converted back into sound through an amplifier and one or more loudspeakers.

The term "phonograph", meaning "sound writing", originates from the Greek words (, meaning 'sound' or 'voice') and (, meaning 'writing'). Similarly, the terms "gramophone" and "graphophone" have roots in the Greek words (, meaning 'letter') and (, meaning 'voice').

In British English, "gramophone" may refer to any sound-reproducing machine that utilizes disc records. These were introduced and popularized in the UK by the Gramophone Company. Initially, "gramophone" was a proprietary trademark of the company, and any use of the name by competing disc record manufacturers was rigorously challenged in court. However, in 1910, an English court ruled that the term had become generic.

United States

In American English, "phonograph", properly specific to machines made by Edison, was sometimes used in a generic sense as early as the 1890s to include cylinder-playing machines made by others. But it was then considered strictly incorrect to apply it to Emile Berliner's Gramophone, a different machine that played nonrecordable discs (although Edison's original Phonograph patent included the use of discs.)

Australia

In Australian English, "record player" was the term; "turntable" was a more technical term; "gramophone" was restricted to the old mechanical (i.e., wind-up) players; and "phonograph" was used as in British English. The "phonograph" was first demonstrated in Australia on 14 June 1878 to a meeting of the Royal Society of Victoria by the Society's Honorary Secretary, Alex Sutherland who published "The Sounds of the Consonants, as Indicated by the Phonograph" in the Society's journal in November that year. On 8 August 1878 the phonograph was publicly demonstrated at the Society's annual ''conversazione'', along with a range of other new inventions, including the microphone.

Early history

Phonautograph

The phonautograph was invented on March 25, 1857, by Frenchman Édouard-Léon Scott de Martinville, an editor and typographer of manuscripts at a scientific publishing house in Paris. One day while editing Professor Longet's ''Traité de Physiologie'', he happened upon that customer's engraved illustration of the anatomy of the human ear, and conceived of "the imprudent idea of photographing the word." In 1853 or 1854 (Scott cited both years) he began working on "le problème de la parole s'écrivant elle-même" ("the problem of speech writing itself"), aiming to build a device that could replicate the function of the human ear.

Scott coated a plate of glass with a thin layer of lampblack. He then took an acoustic trumpet, and at its tapered end affixed a thin membrane that served as the analog to the eardrum. At the center of that membrane, he attached a rigid boar's bristle approximately a centimetre long, placed so that it just grazed the lampblack. As the glass plate was slid horizontally in a well formed groove at a speed of one meter per second, a person would speak into the trumpet, causing the membrane to vibrate and the stylus to trace figures that were scratched into the lampblack. On March 25, 1857, Scott received the French patent #17,897/31,470 for his device, which he called a phonautograph. The earliest known surviving recorded sound of a human voice was conducted on April 9, 1860, when Scott recorded someone singing the song " Au Clair de la Lune" ("By the Light of the Moon") on the device. However, the device was not designed to play back sounds, as Scott intended for people to read back the tracings, which he called phonautograms. This was not the first time someone had used a device to create direct tracings of the vibrations of sound-producing objects, as tuning forks had been used in this way by English physicist Thomas Young in 1807. By late 1857, with support from the Société d'encouragement pour l'industrie nationale, Scott's phonautograph was recording sounds with sufficient precision to be adopted by the scientific community, paving the way for the nascent science of acoustics.

The device's true significance in the history of recorded sound was not fully realized prior to March 2008, when it was discovered and resurrected in a Paris patent office by First Sounds, an informal collaborative of American audio historians, recording engineers, and sound archivists founded to make the earliest sound recordings available to the public. The phonautograms were then digitally converted by scientists at the Lawrence Berkeley National Laboratory in California, who were able to play back the recorded sounds, something Scott had never conceived of. Prior to this point, the earliest known record of a human voice was thought to be an 1877 phonograph recording by Thomas Edison. The phonautograph would play a role in the development of the gramophone, whose inventor, Emile Berliner, worked with the phonautograph in the course of developing his own device.

Paleophone

Charles Cros, a French poet and amateur scientist, is the first person known to have made the conceptual leap from recording sound as a traced line to the theoretical possibility of reproducing the sound from the tracing and then to devising a definite method for accomplishing the reproduction. On April 30, 1877, he deposited a sealed envelope containing a summary of his ideas with the French Academy of Sciences, a standard procedure used by scientists and inventors to establish priority of conception of unpublished ideas in the event of any later dispute.

An account of his invention was published on October 10, 1877, by which date Cros had devised a more direct procedure: the recording stylus could scribe its tracing through a thin coating of acid-resistant material on a metal surface and the surface could then be etched in an acid bath, producing the desired groove without the complication of an intermediate photographic procedure. The author of this article called the device a , but Cros himself favored the word , sometimes rendered in French as ('voice of the past').

Cros was a poet of meager means, not in a position to pay a machinist to build a working model, and largely content to bequeath his ideas to the public domain free of charge and let others reduce them to practice, but after the earliest reports of Edison's presumably independent invention crossed the Atlantic he had his sealed letter of April 30 opened and read at the December 3, 1877 meeting of the French Academy of Sciences, claiming due scientific credit for priority of conception.

Throughout the first decade (1890–1900) of commercial production of the earliest crude disc records, the direct acid-etch method first invented by Cros was used to create the metal master discs, but Cros was not around to claim any credit or to witness the humble beginnings of the eventually rich phonographic library he had foreseen. He had died in 1888 at the age of 45.

The early phonographs

Thomas Edison conceived the principle of recording and reproducing sound between May and July 1877 as a byproduct of his efforts to "play back" recorded telegraph messages and to automate speech sounds for transmission by telephone. His first experiments were with waxed paper. He announced his invention of the first ''phonograph'', a device for recording and replaying sound, on November 21, 1877 (early reports appear in ''Scientific American'' and several newspapers in the beginning of November, and an even earlier announcement of Edison working on a "talking-machine" can be found in the '' Chicago Daily Tribune'' on May 9), and he demonstrated the device for the first time on November 29 (it was patented on February 19, 1878, as US Patent 200,521). "In December, 1877, a young man came into the office of the ''Scientific American'', and placed before the editors a small, simple machine about which few preliminary remarks were offered. The visitor without any ceremony whatever turned the crank, and to the astonishment of all present the machine said: 'Good morning. How do you do? How do you like the phonograph?' The machine thus spoke for itself, and made known the fact that it was the phonograph..."The music critic Herman Klein attended an early demonstration (1881–82) of a similar machine. On the early phonograph's reproductive capabilities he wrote in retrospect: "It sounded to my ear like someone singing about half a mile away, or talking at the other end of a big hall; but the effect was rather pleasant, save for a peculiar nasal quality wholly due to the mechanism, although there was little of the scratching that later was a prominent feature of the flat disc. Recording for that primitive machine was a comparatively simple matter. I had to keep my mouth about six inches away from the horn and remember not to make my voice too loud if I wanted anything approximating to a clear reproduction; that was all. When it was played over to me and I heard my own voice for the first time, one or two friends who were present said that it sounded rather like mine; others declared that they would never have recognised it. I daresay both opinions were correct."

'' The Argus'' newspaper from Melbourne, Australia, reported on an 1878 demonstration at the Royal Society of Victoria, writing "There was a large attendance of ladies and gentlemen, who appeared greatly interested in the various scientific instruments exhibited. Among these the most interesting, perhaps, was the trial made by Mr. Sutherland with the phonograph, which was most amusing. Several trials were made, and were all more or less successful. 'Rule Britannia' was distinctly repeated, but great laughter was caused by the repetition of the convivial song of 'He's a jolly good fellow,' which sounded as if it was being sung by an old man of 80 with a cracked voice."

Early machines

Edison's early phonographs recorded onto a thin sheet of metal, normally tinfoil, which was temporarily wrapped around a helically grooved cylinder mounted on a correspondingly threaded rod supported by plain and threaded bearings. While the cylinder was rotated and slowly progressed along its axis, the airborne sound vibrated a diaphragm connected to a stylus that indented the foil into the cylinder's groove, thereby recording the vibrations as "hill-and-dale" variations of the depth of the indentation.

Introduction of the disc record

By 1890, record manufacturers had begun using a rudimentary duplication process to mass-produce their product. While the live performers recorded the master phonograph, up to ten tubes led to blank cylinders in other phonographs. Until this development, each record had to be custom-made. Before long, a more advanced pantograph-based process made it possible to simultaneously produce 90–150 copies of each record. However, as demand for certain records grew, popular artists still needed to re-record and re-re-record their songs. Reportedly, the medium's first major African-American star George Washington Johnson was obliged to perform his " The Laughing Song" (or the separate "The Whistling Coon") up to thousands of times in a studio during his recording career. Sometimes he would sing "The Laughing Song" more than fifty times in a day, at twenty cents per rendition. (The average price of a single cylinder in the mid-1890s was about fifty cents.)

Oldest surviving recordings

Lambert's lead cylinder recording for an experimental talking clock is often identified as the oldest surviving playable sound recording,
although the evidence advanced for its early date is controversial.
Wax phonograph cylinder recordings of Handel's choral music made on June 29, 1888, at The Crystal Palace in London were thought to be the oldest-known surviving musical recordings, until the recent playback by a group of American historians of a phonautograph recording of '' Au clair de la lune'' recorded on April 9, 1860.

The 1860 phonautogram had not until then been played, as it was only a transcription of sound waves into graphic form on paper for visual study. Recently developed optical scanning and image processing techniques have given new life to early recordings by making it possible to play unusually delicate or physically unplayable media without physical contact.

A recording made on a sheet of tinfoil at an 1878 demonstration of Edison's phonograph in St. Louis, Missouri, has been played back by optical scanning and digital analysis. A few other early tinfoil recordings are known to survive, including a slightly earlier one that is believed to preserve the voice of U.S. President Rutherford B. Hayes, but as of May 2014 they have not yet been scanned. These antique tinfoil recordings, which have typically been stored folded, are too fragile to be played back with a stylus without seriously damaging them. Edison's 1877 tinfoil recording of ''Mary Had a Little Lamb'', not preserved, has been called the first instance of recorded verse.

On the occasion of the 50th anniversary of the phonograph, Edison recounted reciting ''Mary Had a Little Lamb'' to test his first machine. The 1927 event was filmed by an early sound-on-film newsreel camera, and an audio clip from that film's soundtrack is sometimes mistakenly presented as the original 1877 recording.
Wax cylinder recordings made by 19th-century media legends such as P. T. Barnum and Shakespearean actor Edwin Booth are amongst the earliest verified recordings by the famous that have survived to the present.

Improvements at the Volta Laboratory

Alexander Graham Bell and his two associates took Edison's tinfoil phonograph and modified it considerably to make it reproduce sound from wax instead of tinfoil. They began their work at Bell's Volta Laboratory in Washington, D. C., in 1879, and continued until they were granted basic patents in 1886 for recording in wax.Newville, Leslie J
Development of the Phonograph at Alexander Graham Bell's Volta Laboratory
, United States National Museum Bulletin, United States National Museum and the Museum of History and Technology, Washington, D.C., 1959, No. 218, Paper 5, pp.69–79. Retrieved from ProjectGutenberg.org.

Although Edison had invented the phonograph in 1877, the fame bestowed on him for this invention was not due to its efficiency. Recording with his tinfoil phonograph was too difficult to be practical, as the tinfoil tore easily, and even when the stylus was properly adjusted, its reproduction of sound was distorted, and good for only a few playbacks; nevertheless Edison had discovered the idea of sound recording. However immediately after his discovery he did not improve it, allegedly because of an agreement to spend the next five years developing the New York City electric light and power system.

Volta's early challenge

Meanwhile, Bell, a scientist and experimenter at heart, was looking for new worlds to conquer after having patented the telephone. According to Sumner Tainter, it was through Gardiner Green Hubbard that Bell took up the phonograph challenge. Bell had married Hubbard's daughter Mabel in 1879 while Hubbard was president of the Edison Speaking Phonograph Co., and his organization, which had purchased the Edison patent, was financially troubled because people did not want to buy a machine that seldom worked well and proved difficult for the average person to operate.

Volta Graphophone

The sound vibrations had been indented in the wax that had been applied to the Edison phonograph. The following was the text of one of their recordings: "There are more things in heaven and earth, Horatio, than are dreamed of in your philosophy. I am a Graphophone and my mother was a phonograph." Most of the disc machines designed at the Volta Lab had their disc mounted on vertical turntables. The explanation is that in the early experiments, the turntable, with disc, was mounted on the shop lathe, along with the recording and reproducing heads. Later, when the complete models were built, most of them featured vertical turntables.

One interesting exception was a horizontal seven inch turntable. The machine, although made in 1886, was a duplicate of one made earlier but taken to Europe by Chichester Bell. Tainter was granted on July 10, 1888. The playing arm is rigid, except for a pivoted vertical motion of 90 degrees to allow removal of the record or a return to starting position. While recording or playing, the record not only rotated, but moved laterally under the stylus, which thus described a spiral, recording 150 grooves to the inch.

The basic distinction between the Edison's first phonograph patent and the Bell and Tainter patent of 1886 was the method of recording. Edison's method was to indent the sound waves on a piece of tin foil, while Bell and Tainter's invention called for cutting, or "engraving", the sound waves into a wax record with a sharp recording stylus.

Graphophone commercialization

In 1885, when the Volta 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. It was formed to control the patents and to handle the commercial development of their sound recording and reproduction inventions, one of which became the first Dictaphone.

After the Volta Associates gave several demonstrations in the City of Washington, businessmen from Philadelphia created the American Graphophone Company on March 28, 1887, in order to produce and sell the machines for the budding phonograph marketplace. The Volta Graphophone Company then merged with American Graphophone,Hoffmann, Frank W. & Ferstler, Howard
Encyclopedia of Recorded Sound: Volta Graphophone Company
, CRC Press, 2005, Vol.1, pg.1167, , which itself later evolved into Columbia Records.Schoenherr, Steven
Recording Technology History: Charles Sumner Tainter and the Graphophone
, originally published at the History Department of, University of San Diego, revised July 6, 2005. Retrieved from University of San Diego History Department website December 19, 2009. Document transferred to a personal website upon Professor Schoenherr's retirement. Retrieved again from homepage.mac.com/oldtownman website July 21, 2010.Encyclopedia of World Biography.
Alexander Graham Bell
", Encyclopedia of World Biography. Thomson Gale. 2004. Retrieved December 20, 2009 from Encyclopedia.com.

A coin-operated version of the Graphophone, , was developed by Tainter in 1893 to compete with ''nickel-in-the-slot'' entertainment phonograph demonstrated in 1889 by Louis T. Glass, manager of the Pacific Phonograph Company.

The work of the Volta Associates laid the foundation for the successful use of dictating machines in business, because their wax recording process was practical and their machines were durable. But it would take several more years and the renewed efforts of Edison and the further improvements of Emile Berliner and many others, before the recording industry became a major factor in home entertainment.

The technology quickly became popular abroad, where it was also used in new ways. In 1895, for example, Hungary became the first country to use phonographs to conduct folklore and ethnomusicological research, after which it became common practice in ethnography.

Disc vs. cylinder as a recording medium

Discs are not inherently better than cylinders at providing audio fidelity. Rather, the advantages of the format are seen in the manufacturing process: discs can be stamped, and the matrixes to stamp disc can be shipped to other printing plants for a global distribution of recordings; cylinders could not be stamped until 1901–1902, when the gold moulding process was introduced by Edison.

Through experimentation, in 1892, Berliner began commercial production of his disc records and "gramophones". His "phonograph record" was the first disc record to be offered to the public. They were in diameter and recorded on one side only. Seven-inch (17.5 cm) records followed in 1895. The same year, Berliner replaced the hard rubber used to make the discs with a shellac compound. Berliner's early records had poor sound quality, however. Work by Eldridge R. Johnson eventually improved the sound fidelity to a point where it was as good as the cylinder.

Wax cylinders would continue to be used into the 1920s, with New York City-based Czech immigrant, businessman, and inventor Alois Benjamin Saliger using cylinders for his "Psycho-Phone" or "Psychophone", a specialized phonograph or gramophone that Saliger intended to be used in the field of psychology. Invented in 1927 for sleep learning, the Psychophone featured a clock mounted on top of a phonograph, with a repeater device for rewinding and continuously replaying records. While Edison machines had a spring-powered motor, powered by crank on the side, Psychophone models featured an electric-powered motor. Saliger patented the device in 1932 as the "automatic time-controlled suggestion machine".

Dominance of the disc record

In the 1930s, vinyl (originally known as vinylite) was introduced as a record material for radio transcription discs, and for radio commercials. At that time, virtually no discs for home use were made from this material. Vinyl was used for the popular 78-rpm V-discs issued to US soldiers during World War II. This significantly reduced breakage during transport. The first commercial vinylite record was the set of five 12" discs " Prince Igor" (Asch Records album S-800, dubbed from Soviet masters in 1945). Victor began selling some home-use vinyl 78s in late 1945; but most 78s were made of a shellac compound until the 78-rpm format was completely phased out. (Shellac records were heavier and more brittle.) 33s and 45s were, however, made exclusively of vinyl, with the exception of some 45s manufactured out of polystyrene.

First all-transistor phonograph

In 1955, Philco developed and produced the world's first all-transistor phonograph models TPA-1 and TPA-2, which were announced in the June 28, 1955 edition of ''The Wall Street Journal''. Philco started to sell these all-transistor phonographs in the fall of 1955, for the price of $59.95. The October 1955 issue of ''Radio & Television News'' magazine (page 41), had a full page detailed article on Philco's new consumer product. The all-transistor portable phonograph TPA-1 and TPA-2 models played only 45rpm records and used four 1.5 volt "D" batteries for their power supply. The "TPA" stands for "Transistor Phonograph Amplifier". Their circuitry used three Philco germanium PNP alloy-fused junction audio frequency transistors. After the 1956 season had ended, Philco decided to discontinue both models, for transistors were too expensive compared to vacuum tubes, but by 1961 a $49.95 ($ in ) portable, battery-powered radio-phonograph with seven transistors was available.

Turntable designs

There are presently three main phonograph designs: belt-drive, direct-drive, and idler-wheel.

In a belt-drive turntable the motor is located off-center from the platter, either underneath it or entirely outside of it, and is connected to the platter or counter-platter by a drive belt made from elastomeric material.

The direct-drive turntable was invented by Shuichi Obata, an engineer at Matsushita (now Panasonic).'' Billboard'', May 21, 1977
page 140
/ref> In 1969, Matsushita released it as the Technics SP-10,Trevor Pinch, Karin Bijsterveld
''The Oxford Handbook of Sound Studies'', page 515
Oxford University Press the first direct-drive turntable on the market. The most influential direct-drive turntable was the Technics SL-1200,Six Machines That Changed The Music World
'' Wired'', May 2002 which, following the spread of turntablism in hip hop culture, became the most widely-used turntable in DJ culture for several decades.

Arm systems

In some high quality equipment the arm carrying the pickup, known as a tonearm, is manufactured separately from the motor and turntable unit. Companies specialising in the manufacture of tonearms include the English company SME.

Cue lever

More sophisticated turntables were (and still are) frequently manufactured so as to incorporate a "cue lever", a device that mechanically lowers the tonearm on to the record. It enables the user to locate an individual track more easily, to pause a record, and to avoid the risk of scratching the record, which may require practice to avoid when lowering the tonearm manually.

Linear tracking

Early developments in linear turntables were from Rek-O-Kut (portable lathe/phonograph) and Ortho-Sonic in the 1950s, and Acoustical in the early 1960s. These were eclipsed by more successful implementations of the concept from the late 1960s through the early 1980s.

Pickup systems

The pickup, or cartridge, is a transducer that converts mechanical vibrations from a stylus into an electrical signal. The electrical signal is amplified and converted into sound by one or more loudspeakers. Crystal and ceramic pickups that use the piezoelectric effect have largely been replaced by magnetic cartridges.

The pickup includes a stylus with a small diamond or sapphire tip that runs in the record groove. The stylus eventually becomes worn by contact with the groove, and it is usually replaceable.

Styli are classified as spherical or elliptical, although the tip is actually shaped as a half-sphere or a half-ellipsoid. Spherical styli are generally more robust than other types, but do not follow the groove as accurately, giving diminished high frequency response. Elliptical styli usually track the groove more accurately, with increased high frequency response and less distortion. For DJ use, the relative robustness of spherical styli make them generally preferred for back-cuing and scratching. There are a number of derivations of the basic elliptical type, including the Shibata or fine line stylus, which can more accurately reproduce high frequency information contained in the record groove. This is especially important for playback of quadraphonic recordings.

Optical readout

A few specialist laser turntables read the groove optically using a laser pickup. Since there is no physical contact with the record, no wear is incurred. However, this advantage is debatable, since vinyl records have been tested to withstand even 1200 plays with no significant audio degradation, provided that it is played with a high-quality cartridge and that the surfaces are clean. The disadvantage of the laser turntable is that the record must be extremely clean, lest the laser audibly "play" surface dust and debris that would normally be pushed aside by a mechanical stylus.

An alternative approach is to take a high-resolution photograph or scan of each side of the record and interpret the image of the grooves using computer software. An amateur attempt using a flatbed scanner lacked satisfactory fidelity. A professional system employed by the Library of Congress produces excellent quality. The system has the potential to recover and reconstruct recordings from fragile shellac discs that have broken into pieces.

Stylus

A development in stylus form came about by the attention to the CD-4 quadraphonic sound modulation process, which requires up to 50 kHz frequency response, with cartridges like Technics EPC-100CMK4 capable of playback on frequencies up to 100 kHz. This requires a stylus with a narrow side radius, such as . A narrow-profile elliptical stylus is able to read the higher frequencies (greater than 20 kHz), but at an increased wear, since the contact surface is narrower. For overcoming this problem, the Shibata stylus was invented around 1972 in Japan by Norio Shibata of JVC.

The Shibata-designed stylus offers a greater contact surface with the groove, which in turn means less pressure over the vinyl surface and thus less wear. A positive side effect is that the greater contact surface also means the stylus reads sections of the vinyl that were not worn by the common spherical stylus. In a demonstration by JVC records worn after 500 plays at a relatively high 4.5 g tracking force with a spherical stylus, played perfectly with the Shibata profile.

Other advanced stylus shapes appeared following the same goal of increasing contact surface, improving on the Shibata. Chronologically: "Hughes" Shibata variant (1975), "Ogura" (1978), Van den Hul (1982). Such a stylus may be marketed as "Hyperelliptical" (Shure), "Alliptic", "Fine Line" (Ortofon), "Line contact" (Audio Technica), "Polyhedron", "LAC", or "Stereohedron" (Stanton).

A keel-shaped diamond stylus appeared as a byproduct of the invention of the CED Videodisc. This, together with laser-diamond-cutting technologies, made possible the "ridge" shaped stylus, such as the Namiki (1985) design, and Fritz Gyger (1989) design. This type of stylus is marketed as "MicroLine" (Audio technica), "Micro-Ridge" (Shure), or "Replicant" (Ortofon).

To address the problem of steel needle wear upon records, which resulted in the cracking of the latter, RCA Victor devised unbreakable records in 1930, by mixing polyvinyl chloride with plasticisers, in a proprietary formula they called Victrolac, which was first used in 1931, in motion picture discs.

Equalization

Since the late 1950s, almost all phono input stages have used the RIAA equalization standard. Before settling on that standard, there were many different equalizations in use, including EMI, His Master's Voice, Columbia, Decca FFRR, NAB, Ortho, BBC transcription, etc. Recordings made using these other equalization schemes typically sound odd if they are played through a RIAA-equalized preamplifier. High-performance (so-called "multicurve disc") preamplifiers, which include multiple, selectable equalizations, are no longer commonly available. However, some vintage preamplifiers, such as the LEAK varislope series, are still obtainable and can be refurbished. Newer preamplifiers like the Esoteric Sound Re-Equalizer or the K-A-B MK2 Vintage Signal Processor are also available.

Contemporary use and models

Although largely replaced since the introduction of the compact disc in 1982, record albums still sold in small numbers throughout the 1980s and 1990s, but gradually sidelined in favor of CD players and tape decks in home audio environments. Record players continued to be manufactured and sold into the 21st century, although in small numbers and mainly for DJs. Following a resurgence in sales of records since the late 2000s, an increasing number of turntables have been manufactured and sold. Notably, Japanese company Panasonic brought back its well-known advanced Technics SL-1200 at the 2016 Consumer Electronics Show during which Sony also headlined a turntable, amid increasing interest in the format. Similarly, Audio-Technica revived its 1980s Sound Burger portable player in 2023.

At the low-end of the market, Crosley has been especially popular with its suitcase record players and have played a big part in the vinyl revival and its adoption among younger people and children in the 2010s.

New interest in records has led to the development of turntables with additional modern features. USB turntables have a built-in audio interface, which transfers the analog sound directly to the connected computer. Some USB turntables transfer the audio without equalization, but are sold with software that allows the EQ of the transferred audio file to be adjusted. There are also many turntables on the market designed to be plugged into a computer via a USB port for needle dropping purposes.

Modern turntables have also been released featuring Bluetooth technology to output a record's sound wirelessly through speakers. Sony have also released a high-end turntable with an analog-to-digital converter to convert the sound from a playing record into a 24-bit high-resolution audio file in DSD or WAV formats.

See also

* Phonograph record
* Phonograph cylinder
* Archéophone, used to convert diverse types of cylinder recordings to modern, discrete recording formats
* Audio signal processing
* Compressed air gramophone
* List of phonograph manufacturers
* '' Talking Machine World''
* Vinyl killer
* Turntablism

Notes

References

Further reading

* Bruil, Rudolf A. (January 8, 2004).
Linear Tonearms
." Retrieved on July 25, 2011.
* Gelatt, Roland. ''The Fabulous Phonograph, 1877–1977''. Second rev. ed., eing also theFirst Collier Books ed., in series, ''Sounds of the Century''. New York: Collier, 1977. 349 p., ill.
*Heumann, Michael.
Metal Machine Music: The Phonograph's Voice and the Transformation of Writing
" ''eContact! 14.3 — Turntablism'' (January 2013). Montréal: CEC.
* Koenigsberg, Allen. ''The Patent History of the Phonograph, 1877–1912''. APM Press, 1991.
*
* Various.
Turntable [wiki]: Bibliography
" ''eContact! 14.3 — Turntablism'' (January 2013). Montréal: CEC.
* Weissenbrunner, Karin.
Experimental Turntablism: Historical overview of experiments with record players / records — or Scratches from Second-Hand Technology
" ''eContact! 14.3 — Turntablism'' (January 2013). Montréal: CEC.
* Carson, B. H.; Burt, A. D.; Reiskind, and H. I.
"A Record Changer And Record Of Complementary Design"
''RCA Review'', June 1949

External links

at Museum of Retro Technology

Interactive sculpture delivers tactile soundwave experience






The Cylinder Archive

The Berliner Sound and Image Archive

Cylinder Preservation & Digitization Project
– Over 6,000 cylinder recordings held by the Department of Special Collections, University of California, Santa Barbara, free for download or streamed online.

Cylinder players held at the British Library
– information and high-quality images.

History of Recorded Sound: Phonographs and Records


– Excerpts from the book ''Hi-Fi All-New 1958 Edition''



Mario Frazzetto's Phonograph and Gramophone Gallery


Say What?
– Essay on phonograph technology and intellectual property law

Vinyl Engine
– Information, images, articles and reviews from around the world

The Analogue Dept
– Information, images and tutorials; strongly focused on Thorens brand

45 rpm player and changer
at work on YouTube

Historic video footage of Edison operating his original tinfoil phonograph



2-point and Arc Protractor generators on AlignmentProtractor.com

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Audiovisual introductions in 1877
American inventions
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Thomas Edison
History of sound recording
Hip-hop production
Turntablism
19th-century inventions