Phonograph record

The phonograph record was the primary medium used for music reproduction throughout the 20th century. It had co-existed with the phonograph cylinder from the late 1880s and had effectively superseded it by around 1912. Records retained the largest market share even when new formats such as the compact cassette were mass-marketed. By the 1980s, digital media, in the form of the compact disc (CD), had gained a larger market share, and the record left the mainstream in 1991. Since the 1990s, records continue to be manufactured and sold on a smaller scale, and during the 1990s and early 2000s were commonly used by disc jockeys (DJs), especially in dance music genres. They were also listened to by a growing number of audiophiles. The phonograph record has made a niche resurgence in the early 21st century, growing increasingly popular throughout the 2010s and 2020s. with acoustic recording horn at His Master's Voice, c. 1924 Phonograph records are generally described by their diameter in inches (12-inch, 10-inch, 7-inch), the rotational speed in revolutions per minute (rpm) at which they are played (, , , 45, 78), and their time capacity, determined by their diameter and speed (LP [long play], 12-inch disc,  rpm; EP [extended play], 12-inch disc or 7-inch disc, or 45 rpm; Single, 7-inch or 10-inch disc, 45 or 78 rpm); their reproductive quality, or level of fidelity (high-fidelity, orthophonic, full-range, etc.); and the number of audio channels (mono, stereo, quad, etc.). The phrase broken record refers to a malfunction when the needle skips/jumps back to the previous groove and plays the same section over and over again indefinitely. Naming The various names have included phonograph record (American English), gramophone record (British English), record, vinyl, LP (originally a trademark of Columbia Records), black disc, album, and more informally platter, wax, or liquorice pizza. ==Early development==

Manufacture of disc records began in the late 19th century, at first competing with earlier cylinder records. Price, ease of use and storage made the disc record dominant by the 1910s. The standard format of disc records became known to later generations as "78s" after their playback speed in revolutions per minute, although that speed only became standardized in the late 1920s. In the late 1940s new formats pressed in vinyl, the 45-rpm single and 33-rpm long playing LP, were introduced, gradually overtaking the formerly standard "78s" over the next decade. The late 1950s saw the introduction of stereophonic sound on commercial discs. Predecessors The phonautograph was invented by 1857 by Frenchman Édouard-Léon Scott de Martinville. It could not, however, play back recorded sound, as Scott intended for people to read back the tracings, which he called phonautograms. Prior to this, tuning forks had been used in this way to create direct tracings of the vibrations of sound-producing objects, as by English physicist Thomas Young in 1807. In 1877, Thomas Edison invented the first phonograph, which etched sound recordings onto phonograph cylinders. Unlike the phonautograph, Edison's phonograph could both record and reproduce sound, via two separate needles, one for each function. The first disc records The first commercially sold disc records were created by Emile Berliner in the 1880s. Emile Berliner improved the quality of recordings while his manufacturing associate Eldridge R. Johnson, who owned a machine shop in Camden, New Jersey, eventually improved the mechanism of the gramophone with a spring motor and a speed regulating governor, resulting in a sound quality equal to Edison's cylinders. Abandoning Berliner's "Gramophone" trademark for legal reasons in the United States, Johnson's and Berliner's separate companies reorganized in 1901 to form the Victor Talking Machine Company in Camden, New Jersey, whose products would come to dominate the market for several decades. Berliner's Montreal factory, which became the Canadian branch of RCA Victor, still exists. There is a dedicated museum in Montreal for Berliner (Musée des ondes Emile Berliner). == 78 rpm disc developments ==

Early speeds record, 90 to 100 rpm Early disc recordings were produced in a variety of speeds ranging from 60 to 130 rpm, and a variety of sizes. As early as 1894, Emile Berliner's United States Gramophone Company was selling single-sided 7-inch discs with an advertised standard speed of "about 70 rpm". One standard audio recording handbook describes speed regulators, or governors, as being part of a wave of improvement introduced rapidly after 1897. A picture of a hand-cranked 1898 Berliner Gramophone shows a governor and says that spring drives had replaced hand drives. It notes that: The speed regulator was furnished with an indicator that showed the speed when the machine was running so that the records, on reproduction, could be revolved at exactly the same speed...The literature does not disclose why 78 rpm was chosen for the phonograph industry, apparently this just happened to be the speed created by one of the early machines and, for no other reason continued to be used. and Antonio Scotti, recorded in the US in 1906 by the Victor Talking Machine Company, manufactured in Hanover, Germany, for the Gramophone Company, Victor's affiliate in England In 1912, the Gramophone Company set 78 rpm as their recording standard, based on the average of recordings they had been releasing at the time, and started selling players whose governors had a nominal speed of 78 rpm. that of a 60 Hz stroboscope illuminating 92-bar calibration markings. Where it was 50 Hz, it was 77.92 rpm: that of a 50 Hz stroboscope illuminating 77-bar calibration markings. s always ran at 80 rpm. At least one attempt to lengthen playing time was made in the early 1920s. World Records produced records that played at a constant linear velocity, controlled by Noel Pemberton Billing's patented add-on speed governor. Acoustic recording Early recordings were made entirely acoustically, the sound was collected by a horn and piped to a diaphragm, which vibrated the cutting stylus. Sensitivity and frequency range were poor, and frequency response was irregular, giving acoustic recordings an instantly recognizable tonal quality. A singer almost had to put their face in the recording horn. A way of reducing resonance was to wrap the recording horn with tape. Even drums, if planned and placed properly, could be effectively recorded and heard on even the earliest jazz and military band recordings. The loudest instruments such as the drums and trumpets were positioned the farthest away from the collecting horn. Lillian Hardin Armstrong, a member of King Oliver's Creole Jazz Band, which recorded at Gennett Records in 1923, remembered that at first Oliver and his young second trumpet, Louis Armstrong, stood next to each other and Oliver's horn could not be heard. "They put Louis about fifteen feet over in the corner, looking all sad." Electrical recording AG, Germany, During the first half of the 1920s, engineers at Western Electric, as well as independent inventors such as Orlando Marsh, developed technology for capturing sound with a microphone, amplifying it with vacuum tubes (known as valves in the UK), and then using the amplified signal to drive an electromechanical recording head. Western Electric's innovations resulted in a broader and smoother frequency response, which produced a dramatically fuller, clearer and more natural-sounding recording. Soft or distant sounds that were previously impossible to record could now be captured. Volume was now limited only by the groove spacing on the record and the amplification of the playback device. Victor and Columbia licensed the new electrical system from Western Electric and recorded the first electrical discs during the spring of 1925. The first electrically recorded Victor Red Seal record was Chopin's "Impromptus" and Schubert's "Litanei" performed by pianist Alfred Cortot at Victor's studios in Camden, New Jersey. It was recognized as a breakthrough; in 1930, a Times music critic stated: ... the time has come for serious musical criticism to take account of performances of great music reproduced by means of the records. To claim that the records have succeeded in exact and complete reproduction of all details of symphonic or operatic performances ... would be extravagant ... [but] the article of today is so far in advance of the old machines as hardly to admit classification under the same name. Electrical recording and reproduction have combined to retain vitality and color in recitals by proxy. The Orthophonic Victrola had an interior folded exponential horn, a sophisticated design informed by impedance-matching and transmission-line theory, and designed to provide a relatively flat frequency response. Victor's first public demonstration of the Orthophonic Victrola on 6 October 1925, at the Waldorf-Astoria Hotel was front-page news in The New York Times, which reported: The audience broke into applause ... John Philip Sousa [said]: '[Gentlemen], that is a band. This is the first time I have ever heard music with any soul to it produced by a mechanical talking machine' ... The new instrument is a feat of mathematics and physics. It is not the result of innumerable experiments, but was worked out on paper in advance of being built in the laboratory ... The new machine has a range of from 100 to 5,000 [cycles per second], or five and a half octaves ... The 'phonograph tone' is eliminated by the new recording and reproducing process. Sales of records plummeted precipitously during the early years of the Great Depression of the 1930s, and the entire record industry in America nearly foundered. In 1932, RCA Victor introduced a basic, inexpensive turntable called the Duo Jr., which was designed to be connected to their radio receivers. According to Edward Wallerstein (the general manager of the RCA Victor Division), this device was "instrumental in revitalizing the industry". 78 rpm materials The production of shellac records continued throughout the 78 rpm era, which lasted until 1948 in industrialized nations. During the Second World War, the United States Armed Forces produced thousands of 12-inch vinyl 78 rpm V-Discs for use by the troops overseas. After the war, the use of vinyl became more practical as new record players with lightweight crystal pickups and precision-ground styli made of sapphire or an exotic osmium alloy proliferated. In late 1945, RCA Victor began offering "De Luxe" transparent red vinylite pressings of some Red Seal classical 78s, at a de luxe price. Later, Decca Records introduced vinyl Deccalite 78s, while other record companies used various vinyl formulations trademarked as Metrolite, Merco Plastic, and Sav-o-flex, but these were mainly used to produce "unbreakable" children's records and special thin vinyl DJ pressings for shipment to radio stations. 78 rpm recording time The playing time of a phonograph record is directly proportional to the available groove length divided by the turntable speed. Total groove length in turn depends on how closely the grooves are spaced, in addition to the record diameter. At the beginning of the 20th century, the early discs played for two minutes, the same as cylinder records. The 12-inch disc, introduced by Victor in 1903, increased the playing time to three and a half minutes. Because the standard 10-inch 78 rpm record could hold about three minutes of sound per side, most popular recordings were limited to that duration. For example, when King Oliver's Creole Jazz Band, including Louis Armstrong on his first recordings, recorded 13 sides at Gennett Records in Richmond, Indiana, in 1923, one side was 2:09 and four sides were 2:52–2:59. In January 1938, Milt Gabler started recording for Commodore Records, and to allow for longer continuous performances, he recorded some 12-inch discs. Eddie Condon explained: "Gabler realized that a jam session needs room for development." The first two 12-inch recordings did not take advantage of their capability: "Carnegie Drag" was 3m 15s; "Carnegie Jump", 2m 41s. But at the second session, on 30 April, the two 12-inch recordings were longer: "Embraceable You" was 4m 05s; "Serenade to a Shylock", 4m 32s. Another way to overcome the time limitation was to issue a selection extending to both sides of a single record. Vaudeville stars Gallagher and Shean recorded "Mr. Gallagher and Mr. Shean", written by themselves or, allegedly, by Bryan Foy, as two sides of a 10-inch 78 in 1922 for Victor. Longer musical pieces were released as a set of records. In 1903 The Gramophone Company in England made the first complete recording of an opera, Verdi's Ernani, on 40 single-sided discs. In 1940, Commodore released Eddie Condon and his Band's recording of "A Good Man Is Hard to Find" in four parts, issued on both sides of two 12-inch 78s. The limited duration of recordings persisted from their advent until the introduction of the LP record in 1948. In popular music, the time limit of minutes on a 10-inch 78 rpm record meant that singers seldom recorded long pieces. One exception is Frank Sinatra's recording of Rodgers and Hammerstein's "Soliloquy", from Carousel, made on 28 May 1946. Because it ran 7m 57s, longer than both sides of a standard 78 rpm 10-inch record, it was released on Columbia's Masterwork label (the classical division) as two sides of a 12-inch record. In the 78 era, classical-music and spoken-word items generally were released on the longer 12-inch 78s, about 4–5 minutes per side. For example, on 10 June 1924, four months after the 12 February premier of Rhapsody in Blue, George Gershwin recorded an abridged version of the seventeen-minute work with Paul Whiteman and His Orchestra. It was released on two sides of Victor 55225 and ran for 8m 59s. Record albums "Record albums" were originally booklets containing collections of multiple disc records of related material, the name being related to photograph albums or scrap albums. German record company Odeon pioneered the album in 1909 when it released the Nutcracker Suite by Tchaikovsky on four double-sided discs in a specially designed package. Reprise did not proceed further with the series due to a lack of sales for the single, and a lack of general interest in the concept. In 1978, guitarist and vocalist Leon Redbone released a promotional 78 rpm single featuring two songs ("Alabama Jubilee" and "Please Don't Talk About Me When I'm Gone") from his Champagne Charlie album. In the same vein of Tin Pan Alley revivals, R. Crumb & His Cheap Suit Serenaders issued a number of 78 rpm singles on their Blue Goose record label. The most familiar of these releases is probably ''R. Crumb & His Cheap Suit Serenaders' Party Record'' (1980, issued as a "Red Goose" record on a 12-inch single), with the double-entendre "My Girl's Pussy" on the "A" side and the X-rated "Christopher Columbus" on the "B" side. In the 1990s, Rhino Records issued a series of boxed sets of 78 rpm reissues of early rock and roll hits, intended for owners of vintage jukeboxes. The records were made of vinyl, however, and some of the earlier vintage 78 rpm jukeboxes and record players (the ones that were pre-war) were designed with heavy tone arms to play the hard slate-impregnated shellac records of their time. These vinyl Rhino 78s were softer and would be destroyed by old juke boxes and old record players, but play well on newer 78-capable turntables with modern lightweight tone arms and jewel needles. As a special release for Record Store Day 2011, Capitol re-released The Beach Boys single "Good Vibrations" in the form of a 10-inch 78 rpm record (b/w "Heroes and Villains"). More recently, The Reverend Peyton's Big Damn Band has released their tribute to blues guitarist Charley Patton Peyton on Patton on both 12-inch LP and 10-inch 78s. == New sizes and materials after WWII ==

CBS Laboratories had long been at work for Columbia Records to develop a phonograph record that would hold at least 20 minutes per side. Research began in 1939, was suspended during World War II, and then resumed in 1945. Columbia Records unveiled the LP at a press conference in the Waldorf-Astoria on 21 June 1948, in two formats: in diameter, matching that of 78 rpm singles, and in diameter. conductor Arthur Fiedler demonstrating the new RCA Victor 45 rpm player and record in February 1949 Unwilling to accept and license Columbia's system, in February 1949, RCA Victor released the first 45 rpm single, 7 inches in diameter with a large center hole. The 45 rpm player included a changing mechanism that allowed multiple disks to be stacked, much as a conventional changer handled 78s. Also like 78s, the short playing time of a single 45 rpm side meant that long works, such as symphonies and operas, had to be released on multiple 45s instead of a single LP, but RCA Victor claimed that the new high-speed changer rendered side breaks so brief as to be inconsequential. Early 45 rpm records were made from either vinyl or polystyrene. They had a playing time of eight minutes. At first the two systems were marketed in competition, in what was called "The War of the Speeds". Speeds Shellac era and RCA Victor's competition extended to equipment. Some turntables included spindle size adapters, but other turntables required snap-in inserts like this one to adapt Victor's larger 45 rpm spindle size to the smaller spindle size available on nearly all turntables. Shown is one popular design in use for many years. The older 78 rpm format continued to be mass-produced alongside the newer formats using new materials in decreasing numbers until the summer of 1958 in the U.S., and in a few countries, such as the Philippines and India (both countries issued recordings by the Beatles on 78s), into the late 1960s. For example, Columbia Records' last reissue of Frank Sinatra songs on 78 rpm records was an album called Young at Heart, issued in November 1954. Microgroove and vinyl era 16 rpm record (label only) Columbia and RCA Victor each pursued their R&D secretly. The commercial rivalry between RCA Victor and Columbia Records led to RCA Victor's introduction of what it had intended to be a competing vinyl format, the 7-inch (175 mm) 45 rpm disc, with a much larger center hole. For a two-year period from 1948 to 1950, record companies and consumers faced uncertainty over which of these formats would ultimately prevail in what was known as the "War of the Speeds" (see also Format war). In 1949 Capitol and Decca adopted the new LP format and RCA Victor gave in and issued its first LP in January 1950. The 45 rpm size was gaining in popularity, too, and Columbia issued its first 45s in February 1951. By 1954, 200 million 45s had been sold. Eventually the 12-inch (300 mm)  rpm LP prevailed as the dominant format for musical albums, and 10-inch LPs were no longer issued. The last Columbia Records reissue of any Frank Sinatra songs on a 10-inch LP record was an album called Hall of Fame, CL 2600, issued on 26 October 1956, containing six songs, one each by Tony Bennett, Rosemary Clooney, Johnnie Ray, Frank Sinatra, Doris Day, and Frankie Laine. From the mid-1950s through the 1960s, in the U.S. the common home record player or "stereo" (after the introduction of stereo recording) would typically have had these features: a three- or four-speed player (78, 45, , and sometimes  rpm); with changer, a tall spindle that would hold several records and automatically drop a new record on top of the previous one when it had finished playing, a combination cartridge with both 78 and microgroove styli and a way to flip between the two; and some kind of adapter for playing the 45s with their larger center hole. The adapter could be a small solid circle that fit onto the bottom of the spindle (meaning only one 45 could be played at a time) or a larger adapter that fit over the entire spindle, permitting a stack of 45s to be played. High fidelity The term "high fidelity" was coined in the 1920s by some manufacturers of radio receivers and phonographs to differentiate their better-sounding products claimed as providing "perfect" sound reproduction. The term began to be used by some audio engineers and consumers through the 1930s and 1940s. After 1949 a variety of improvements in recording and playback technologies, especially stereo recordings, which became widely available in 1958, gave a boost to the "hi-fi" classification of products, leading to sales of individual components for the home such as amplifiers, loudspeakers, phonographs, and tape players. High Fidelity and Audio were two magazines that hi-fi consumers and engineers could read for reviews of playback equipment and recordings. Stereophonic sound A stereophonic phonograph provides two channels of audio, one left and one right. This is achieved by adding another vertical dimension of movement to the needle in addition to the horizontal one. As a result, the needle now moves not only left and right, but also up and down. But since those two dimensions do not have the same sensitivity to vibration, the difference needs to be evened out by having each channel take half its information from each direction by turning the channels 45 degrees from horizontal. As a result of the 45-degree turn and some vector addition, it can be demonstrated that out of the new horizontal and vertical directions, one would represent the sum of the two channels, and the other representing the difference. Record makers decide to pick the directions such that the traditional horizontal direction codes for the sum. As a result, an ordinary mono disk is decoded correctly as "no difference between channels", and an ordinary mono player would simply play the sum of a stereophonic record without too much loss of information. Noise reduction systems A similar scheme aiming at the high-end audiophile market, and achieving a noise reduction of about 20 to 25 dB(A), was the Telefunken/Nakamichi High-Com II noise reduction system being adapted to vinyl in 1979. A decoder was commercially available but only one demo record is known to have been produced in this format. Other noise-reduction systems for vinyl records were dbx and CX. Yet another noise reduction system for vinyl records was the UC compander system developed by (ZWT) of (RFT). The system deliberately reduced disk noise by 10 to 12 dB(A) only to remain virtually free of recognizable acoustical artifacts even when records were played back without an UC expander. In fact, the system was undocumented yet introduced into the market by several East-German record labels since 1983. Over 500 UC-encoded titles were produced without an expander becoming available to the public. The only UC expander was built into a turntable manufactured by . The availability of encoded disks in any of these formats stopped in the mid-1980s. ==Formats==

Types of records The usual diameters of the holes on an EP record are . Sizes of records in the United States and the UK are generally measured in inches, e.g. 7-inch records, which are generally 45 rpm records. LPs were 10-inch records at first, but soon the 12-inch size became by far the most common. Generally, 78s were 10-inch, but 12-inch and 7-inch and even smaller were made—the so-called "little wonders". Standard formats : Notes: Less common formats Flexi discs were thin flexible records that were distributed with magazines and as promotional gifts from the 1960s to the 1980s. In March 1949, as RCA Victor released the 45, Columbia released several hundred 7-inch,  rpm, small-spindle-hole singles. This format was soon dropped as it became clear that the RCA Victor 45 was the single of choice and the Columbia 12-inch LP would be the album of choice. The first release of the 45 came in seven colors, based on the genre/type of music featured on the record: black 47-xxxx popular series, yellow 47-xxxx juvenile series, green (teal) 48-xxxx country series, deep red 49-xxxx classical series, bright red (cerise) 50-xxxx blues/spiritual series, light blue 51-xxxx international series, dark blue 52-xxxx light classics. Most colors were soon dropped in favor of black because of production problems. However, yellow and deep red were continued until about 1952. The first 45 rpm record created for sale was "PeeWee the Piccolo" RCA Victor 47-0147 pressed in yellow translucent vinyl at the Sherman Avenue plant, Indianapolis on 7 December 1948, by R. O. Price, plant manager. In the 1950s and 1960s Ribs were created within Soviet Union countries as a result of cultural censorship. These black market records were of banned music, printed onto x-ray films scavenged from hospital bins. In the 1970s, the government of Bhutan produced now-collectible postage stamps on playable vinyl mini-discs. Recent developments In 2018, an Austrian startup, Rebeat Innovation GmBH, received 4.8 million in funding to develop high definition vinyl records that purport to contain longer play times, louder volumes and higher fidelity than conventional vinyl LPs. Rebeat Innovation, headed by CEO Günter Loibl, has called the format 'HD Vinyl'. The HD process works by converting audio to a digital 3D topography map that is then inscribed onto the vinyl stamper via lasers, resulting in less loss of information. Many critics have expressed skepticism regarding the cost and quality of HD records. In May 2019, at the Making Vinyl conference in Berlin, Loibl unveiled the software "Perfect Groove" for creating 3D topographic audio data files. The software provides a map for laser-engraving for HD Vinyl stampers. The audio engineering software was created with mastering engineers Scott Hull and Darcy Proper, a four-time Grammy winner. The demonstration offered the first simulations of what HD Vinyl records are likely to sound like, ahead of actual HD vinyl physical record production. Loibl discussed the software "Perfect Groove" at a presentation titled "Vinyl 4.0 The next generation of making records" before offering demonstrations to attendees. In 2025, Tiny Vinyl of Nashville, Tennessee began a partnership with Target to sell 4-inch vinyl records, which were cheaper than full-size records. However, former AC Entertainment executive Jesse Mann, who partnered with toy industry executive Neil Kohler, admitted the audio quality was not the same. The records had been produced for several years by Nashville's GZ Media.{{cite news|url=https://www.pressreader.com/usa/burlington-free-press/20250814/281578066747168?srsltid=AfmBOoqu89rtjXqyBHTwEfF-4JHGX8oC23DB323OFuGD7WkKMY_uFgME|title=Nashville's Tiny Vinyl goes mainstream with Target partnership ==Structure==

Increasingly from the early 20th century, and almost exclusively since the 1920s, both sides of the record have been used to carry the grooves. Occasional records have been issued since then with a recording on only one side. Since its inception in 1948, vinyl record standards for the United States follow the guidelines of the Recording Industry Association of America (RIAA). For lighter records, record clamps or record weights can be used to help hold the record down on the turntable. A record clamp is actually screwed down for a positive lock, whereas a record weight is a puck that simply sits on top of the center of the record. Vinyl quality The composition of vinyl used to press records (a blend of polyvinyl chloride and polyvinyl acetate) has varied considerably over the years. Virgin vinyl is preferred, but during the 1970s energy crisis, as a cost-cutting move, much of the industry began reducing the thickness and quality of vinyl used in mass-market manufacturing. Sound quality suffered, with increased ticks, pops, and other surface noises. RCA Records marketed their lightweight LP as Dynaflex, which, at the time, was considered inferior by many record collectors. It became commonplace to use recycled vinyl. New or "virgin" heavy/heavyweight (180–220 g) vinyl is commonly used for modern audiophile vinyl releases in all genres. Many collectors prefer to have heavyweight vinyl albums, which have been reported to have better sound than normal vinyl because of their higher tolerance against deformation caused by normal play. Following the vinyl revival of the 21st century, select manufacturers adopted bioplastic-based records due to concerns over the environmental impact of widespread PVC use. ==Limitations==

Shellac One problematic aspect of shellac was that the size of the disks tended to be larger because they were limited to due to the risk of groove collapse at greater densities, whereas vinyl could have up to and maintain the stability of the medium. Vinyl Although vinyl records are strong and do not break easily, vinyl is soft and scratches can ruin the record. It readily acquires a static charge, attracting dust that is difficult to remove completely. Dust and scratches cause clicks and pops on audio playback. In extreme cases, they can cause the needle to skip over a series of grooves, or cause the needle to skip backward, creating a "locked groove" that repeats over and over. This is the origin of the phrase "like a broken record" or "like a scratched record", which describes a person or thing that repeats itself. A further limitation of the gramophone record is that fidelity declines as playback progresses: there is more vinyl per second available for fine reproduction of high frequencies at the large-diameter beginning of the groove than exist at the smaller diameters close to the end of the side. At the start of a groove on an LP, 510 mm of vinyl per second travels past the stylus; at the end of the groove, it is 200–210 mm per second – less than half the linear resolution. There is controversy about the relative quality of CD sound and LP sound when the latter is heard under the best conditions (see Comparison of analog and digital recording). One technical advantage with vinyl is that if correctly handled and stored, it can be playable for decades and possibly centuries, which is longer than some versions of the optical CD. For vinyl records to be playable for years to come, they need to be handled with care and stored properly. Guidelines for proper vinyl storage include not stacking records on top of each other, avoiding heat or direct sunlight, and placing them in a temperature-controlled area to prevent warping. Collectors often store their records in a variety of boxes, cubes, shelves and racks. Sound fidelity At the time of the introduction of the compact disc (CD) in 1982, the stereo LP pressed in vinyl continued to suffer from a variety of limitations: The stereo image was not made up of fully discrete left and right channels; each channel's signal coming out of the cartridge contained a small amount of the signal from the other channel, with more crosstalk at higher frequencies. High-quality disc cutting equipment was capable of making a master disc with 30–40 dB of stereo separation at 1,000 Hz, but the playback cartridges had lesser performance of about 20 to 30 dB of separation at 1000 Hz, with separation decreasing as frequency increased, such that at 12 kHz the separation was about 10–15 dB. A common modern view is that stereo isolation must be higher than this to achieve a proper stereo soundstage. However, in the 1950s the BBC determined in a series of tests that only 20–25 dB is required for the impression of full stereo separation. Thin, closely spaced spiral grooves that allow for increased playing time on a  rpm microgroove LP lead to a tinny pre-echo warning of upcoming loud sounds. The cutting stylus unavoidably transfers some of the subsequent groove wall's impulse signal into the previous groove wall. It is discernible by some listeners throughout certain recordings, but a quiet passage followed by a loud sound allows anyone to hear a faint pre-echo of the loud sound occurring 1.8 seconds ahead of time. LP vis- CD Audiophiles have differed over the relative merits of the LP versus the CD since the digital disc was introduced. Digital sampling can theoretically completely reproduce a sound wave within a given range of frequencies if the sampling rate is high enough. Vinyl's drawbacks, however, include surface noise, less resolution due to a lower dynamic range, and greater sensitivity to handling. Modern anti-aliasing filters and oversampling systems used in digital recordings have eliminated perceived problems observed with early CD players. There is a theory that vinyl records can audibly represent higher frequencies than compact discs, though most of this is noise and not relevant to human hearing. According to Red Book specifications, the compact disc has a frequency response of 20 Hz up to 22,050 Hz, and most CD players measure flat within a fraction of a decibel from at least 0 Hz to 20 kHz at full output. Due to the distance required between grooves, it is not possible for an LP to reproduce as low frequencies as a CD. Additionally, turntable rumble and acoustic feedback obscures the low-end limit of vinyl but the upper end can be, with some cartridges, reasonably flat within a few decibels to 30 kHz, with gentle roll-off. Carrier signals of Quad LPs popular in the 1970s were at 30 kHz to be out of the range of human hearing. The average human auditory system is sensitive to frequencies from 20 Hz to a maximum of around 20,000 Hz. The upper and lower frequency limits of human hearing vary per person. High frequency sensitivity decreases as a person ages, a process called presbycusis. ==Preservation==

Gramophone records are gradually degraded by each playback, and are best preserved by transferring the recording onto other media and playing the records as rarely as possible. They need to be stored on edge, and do best under environmental conditions that most humans would find comfortable. The longevity and optimal performance of vinyl records can be improved through certain accessories and cleaning supplies. Slipmats provide a soft and cushioned surface between the record and the turntable platter, minimizing friction and damage to the vinyl surface. Where old disc recordings are considered to be of artistic or historic interest, from before the era of tape or where no tape master exists, archivists play back the disc on suitable equipment and record the result, typically onto a digital format, which can be manipulated to remove analog flaws without any further damage to the source recording. For example, Nimbus Records uses a specially built horn record player to transfer 78s. For accurate transfer, professional archivists carefully choose the correct stylus shape and diameter, tracking weight, equalisation curve and other playback parameters and use high-quality analogue-to-digital converters. As an alternative to playback with a stylus, a record can be read optically, processed with software to calculate an equivalent stylus velocity, and thereby converted to a digital format. This technique sometimes allows for reconstruction of broken or otherwise damaged discs. ==Popularity and current status==

mixing vinyl records with a DJ mixer at the Sundance Film Festival in 2003 Groove recordings, first designed in the final quarter of the 19th century, held a predominant position for nearly a century—withstanding competition from reel-to-reel tape, the 8-track cartridge, and the compact cassette. The widespread popularity of Sony's Walkman was a factor that contributed to the vinyl's lessening usage in the 1980s. In 1988, the compact disc surpassed the gramophone record in unit sales. Vinyl records experienced a sudden decline in popularity between 1988 and 1991, when the major label distributors restricted their return policies, which retailers had been relying on to maintain and swap out stocks of relatively unpopular titles. First the distributors began charging retailers more for new products if they returned unsold vinyl, and then they stopped providing any credit at all for returns. Retailers, fearing they would be stuck with anything they ordered, only ordered proven, popular titles that they knew would sell, and devoted more shelf space to CDs and cassettes. Record companies also removed many vinyl titles from production and distribution, further undermining the availability of the format and leading to the closure of pressing plants. This rapid decline in the availability of records accelerated the format's decline in popularity, and is seen by some as a deliberate ploy to make consumers switch to CDs, which unlike today, were more profitable for the record companies. The more modern CD format held numerous advantages over the record such as its portability, digital audio and its elimination of background hiss and surface noise, instant switching and searching of tracks, longer playing time, lack of continuous degradation (most analog formats wear out as they get played), programmability (e.g. shuffle, repeat), and ability to be played on and copied to a personal computer. In spite of their flaws, records continued to have enthusiastic supporters, partly due to a preference of its "warmer" sound and its larger sleeve artwork. Records continued to be format of choice by disc jockeys in dance clubs during the 1990s and 2000s due to its better mixing capabilities. The Entertainment Retailers Association in the United Kingdom found in 2011 that consumers were willing to pay on average £16.30 (€19.37, US$25.81) for a single vinyl record, as opposed to £7.82 (€9.30, US$12.38) for a CD and £6.80 (€8.09, US$10.76) for a digital download. The resurgence accelerated throughout the 2010s, and in 2015 reached $416 million revenue in the US, their highest level since 1988. As of 2017, it comprised 14% of all physical album sales. According to the RIAA's midyear report in 2020, phonograph record revenues surpassed those of CDs for the first time since the 1980s. In 2021, Taylor Swift sold 102,000 copies of her ninth studio album Evermore on vinyl in one week. The sales of the record beat the largest sales in one week on vinyl since Nielsen started tracking vinyl sales in 1991. The sales record was previously held by Jack White, who sold 40,000 copies of his second solo release, Lazaretto, on vinyl in its first week of release in 2014. Approximately 180 million LP records are produced annually at global pressing plants, as of 2021. Present production 2014 , 48 record pressing facilities exist worldwide. The increased popularity of the record has led to the investment in new and modern record-pressing machines. Only two producers of lacquer master discs remained: Apollo Masters in California, and MDC in Japan. According to the Apollo Masters website, their future was still uncertain. Hand Drawn Pressing opened in 2016 as the world's first fully automated record pressing plant. == Less common recording formats ==

VinylVideo VinylVideo is a format to store a low resolution black and white video on a vinyl record alongside encoded audio. ==See also==