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91-595: The album debuted at No. 43 on the US Billboard 200 , and No. 3 on the US Folk Albums chart, selling around 7,000 copies in its first week. The album has sold 23,000 copies in the United States as of March 2016. All tracks composed by Ben Harper; except where indicated This 2010s rock album–related article is a stub . You can help Misplaced Pages by expanding it . Billboard 200 The Billboard 200

182-429: A binaural record out of it. This consisted of two separate channels cut into two separate groups of grooves running next to each other, one running from the edge of the disc to halfway through and the other starting at the halfway point and ending up towards the label. He used two lateral grooves with a 500 Hz crossover in the inner track to try and compensate for the lower fidelity and high-frequency distortion on

273-401: A decade, and broadcasters were looking for better materials from which to make phonograph records as well as a better format in which to record them to play over the narrow and thus inherently noisy radio channel. As radio had been playing the same shellac discs available to the public, it was found that, even though the playback system was now electric rather than acoustic, the surface noise on

364-465: A hill-and-dale (vertically modulated) format on his cylinders and discs since 1877, and Berliner had been recording in a side-to-side (lateral) format since shortly thereafter. Each format developed on its own trajectory until the late 1920s when electric recording on disc, utilizing a microphone, surpassed acoustic recording which required a loud performance into what amounted to a megaphone in reverse. At that time, AM radio had been around for roughly

455-439: A monophonic system since a stereo system contains two preamplifiers, two amplifiers, and two speaker systems. In addition, the user would need an FM stereo tuner, to upgrade any tape recorder to a stereo model, and to have their phonograph fitted with a stereo cartridge. In the early days, it was not clear whether consumers would think the sound was so much better as to be worth twice the price. Thomas Edison had been recording in

546-561: A more accurate picture of any given year's best-selling albums, as a title that hypothetically spent nine weeks at No. 1 in March could possibly have sold fewer copies than one spending six weeks at No. 3 in January. Albums at the peak of their popularity at the time of the November/December chart-year cutoff many times end up ranked lower than one would expect on a year-end tally, yet are ranked on

637-447: A more modern 24 fps system with brand-new 65 mm self-blimped production cameras ( Mitchell BFC ... "Blimped Fox Camera") and brand-new 65 mm MOS cameras (Mitchell FC ... "Fox Camera") and brand-new Super Baltar lenses in a wide variety of focal lengths, first employed on South Pacific . Essentially, although Todd-AO was also available to others, the format became Fox's premier origination and presentation apparatus, replacing

728-412: A musician, Paul McCartney has the most top-10 albums, with 51. This includes 32 with The Beatles , 11 solo albums, seven albums with the group Wings , and one album credited to him and his first wife, Linda McCartney . Note: Swift is the first living artist to chart five albums in the top 10 simultaneously.  She was previously the first living soloist to have four albums simultaneously chart in

819-408: A new algorithm with data from all major on-demand audio subscription and online music sales services in the U.S. Starting on the issue dated January 18, 2020, Billboard updated its method again by incorporating video data from YouTube , along with visual plays from digital platforms like Apple Music , Spotify , Tidal , Vevo and, as of the issue dated March 23, 2021, from Facebook . As of

910-400: A new algorithm, utilizing data from all of the major on-demand audio subscription services, including Spotify , Apple Music , Google Play and Groove Music . Under the new methodology, 10 track sales or 1,500 song streams from an album are treated as equivalent to one purchase of the album. Billboard continues to publish a pure album sales chart, called " Top Album Sales ", that maintains

1001-505: A separate listening room. Several stereophonic test recordings, using two microphones connected to two styli cutting two separate grooves on the same wax disc, were made with Leopold Stokowski and the Philadelphia Orchestra at Philadelphia's Academy of Music in March 1932. The first (made on March 12, 1932), of Scriabin's Prometheus: Poem of Fire , is the earliest known surviving intentional stereo recording. The performance

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1092-581: A series of telephone transmitters connected from the stage of the Paris Opera to a suite of rooms at the Paris Electrical Exhibition, where listeners could hear a live transmission of performances through receivers for each ear. Scientific American reported: Every one who has been fortunate enough to hear the telephones at the Palais de l'Industrie has remarked that, in listening with both ears at

1183-513: A somewhat artificial six-track panning method. A process known somewhat derogatorily as the Columbia Spread was often used to synthesize Left Center and Right Center from a combination of Left and Center and Right and Center, respectively, or, for effects, the effect could be "panned" anywhere across the five stage speakers using a one-in/five-out pan pot. Dolby, who did not approve of this practice, which results in loss of separation, instead used

1274-443: A time before intentional stereophonic recording technology existed. Modern stereophonic technology was invented in the 1930s by British engineer Alan Blumlein at EMI , who patented stereo records, stereo films, and also surround sound. In early 1931, Blumlein and his wife were at a local cinema. The sound reproduction systems of the early talkies invariably only had a single set of speakers – which could lead to

1365-562: A vast array of sounds, ranging from railroad sounds to thunderstorms. By 1953, Cook had a catalog of about 25 stereo records for sale to audiophiles . The first stereo recordings using magnetic tape were made in Germany in the early 1940s using Magnetophon recorders. Around 300 recordings were made of various symphonies, most of which were seized by the Red Army at the end of World War II. The recordings were of relatively high fidelity , thanks to

1456-563: A vertical fashion to minimize rumble. The overhead in this scheme limited the playing time to slightly longer than a single even at 33 + 1 ⁄ 3 RPM on a 12-inch disc. Another failed experiment in the late 1920s and early '30s involved recording the left channel on one side of the disc and recording the right channel on the other side of the disc. These were manufactured on twin film-company recording lathes which ran in perfect sync with one another, and were capable of counter-clockwise as well as conventional clockwise recording. Each master

1547-445: A week spent at No. 200, two points for a week spent at No. 199, etc., up to 200 points for each week spent at No. 1). Other factors, including an album's total weeks spent on the chart and its peak position, are calculated into an album's year-end total. Since Billboard began obtaining sales information from Nielsen SoundScan, the year-end charts are now calculated by a very straightforward cumulative total of yearlong sales. This gives

1638-469: Is Cinerama was still playing only in New York City, most moviegoing audiences heard stereophonic sound for the first time with House of Wax , an early 3-D film starring Vincent Price and produced by Warner Bros. Unlike the 4-track mag release-print stereo films of the period which featured four thin strips of magnetic material running down the length of the film, inside and outside the sprocket holes,

1729-535: Is a record chart ranking the 200 most popular music albums and EPs in the United States. It is published weekly by Billboard magazine to convey the popularity of an artist or groups of artists. Sometimes, a recording act is remembered for its " number ones " that outperformed all other albums during at least one week. The chart grew from a weekly top 10 list in 1956 to become a top 200 list in May 1967, acquiring its existing name in March 1992. Its previous names include

1820-412: Is a method of sound reproduction that recreates a multi-directional, 3-dimensional audible perspective. This is usually achieved by using two independent audio channels through a configuration of two loudspeakers (or stereo headphones ) in such a way as to create the impression of sound heard from various directions, as in natural hearing. Because the multi-dimensional perspective is the crucial aspect,

1911-424: Is then reproduced over multiple loudspeakers to recreate, as closely as possible, the live sound. Secondly artificial or pan stereo, in which a single-channel ( mono ) sound is reproduced over multiple loudspeakers. By varying the relative amplitude of the signal sent to each speaker, an artificial direction (relative to the listener) can be suggested. The control which is used to vary this relative amplitude of

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2002-489: The Billboard Top LPs (1961–1972), Billboard Top LPs & Tape (1972–1984), Billboard Top 200 Albums (1984–1985), Billboard Top Pop Albums (1985–1991), and Billboard 200 Top Albums (1991–1992). The chart is based mostly on sales – both at retail and digital – of albums in the United States. The weekly sales period was Monday to Sunday when Nielsen started tracking sales in 1991, but since July 2015,

2093-468: The Billboard 200). A new chart that keeps the previous criteria for the Billboard 200 – dubbed the " Top Current Albums " chart – was also introduced in the same issue. Billboard has adjusted its policies for Christmas and holiday albums several times. The albums were eligible for the main album charts until 1963, when a " Christmas Albums " chart was created. Albums appearing here were not listed on

2184-549: The Billboard 200. "Both Dark Side of the Moon and The Wall should be in the Billboard Top 200," said former Pink Floyd member Roger Waters in 1992. " The Wall still does anything up to four million each year... They've created a catalog chart in which to place all these old albums, leaving the main chart free for all the artists the record companies will want to book advertising space for. It just offers further evidence of

2275-613: The Chicago World's Fair in 1933 using a dummy with microphones instead of ears . The two signals were sent out over separate AM station bands. Utilizing selections recorded by the Philadelphia Orchestra , under the direction of Leopold Stokowski , intended for but not used in Walt Disney's Fantasia , the Carnegie Hall demonstration by Bell Laboratories on April 9 and 10, 1940, used three huge speaker systems. Synchronization

2366-449: The Greek στερεός ( stereós , "firm, solid") + φωνή ( phōnḗ , "sound, tone, voice") and it was coined in 1927 by Western Electric , by analogy with the word stereoscopic . Stereo sound systems can be divided into two forms: the first is true or natural stereo in which a live sound is captured, with any natural reverberation present, by an array of microphones . The signal

2457-633: The Recording Industry Association of America when Gold, Platinum and Diamond album awards are announced. (RIAA awards reflect wholesale shipments , not retail sales .) Beginning with the December 13, 2014, issue, Billboard updated the methodology of its album chart again, changing from a "pure sales-based ranking" to one measuring "multi-metric consumption". With this overhaul, the Billboard 200 includes on-demand streaming and digital track sales (as measured by Nielsen SoundScan) by way of

2548-608: The Théâtrophone , and in England from 1895 to 1925 as the Electrophone . Both were services available by coin-operated receivers at hotels and cafés, or by subscription to private homes. There have been cases in which two recording lathes (for the sake of producing two simultaneous masters) were fed from two separate microphones; when both masters survive, modern engineers have been able to synchronize them to produce stereo recordings from

2639-403: The "Top Holiday Albums" list and the Billboard 200. Since May 25, 1991, the Billboard 200's positions have been derived from Nielsen SoundScan sales data; as of 2008 , it is contributed to by approximately 14,000 music sellers. Because these numbers are supplied by a subset of sellers rather than record labels , it is common for these numbers to be substantially lower than those reported by

2730-501: The "Top LPs" chart, and in 1974, this rule was reverted and holiday albums again appeared within the main list. In 1983, the " Christmas Albums " chart was resurrected, but a title's appearance here did not disqualify it from appearing on the "Top Pop Albums" chart. In 1990, the chart was retitled " Top Holiday Albums "; as of 2009 , it holds 50 positions and runs for several weeks during the end-of-calendar-year holiday season. Its current policy allows holiday albums to concurrently chart on

2821-491: The 10 longest rises to number one on the Billboard 200 since the adoption of Nielsen Music data in 1991. Note: Newhart, Meader and Fontaine's albums were all number one on the mono chart but not on the stereo chart. Garland is listed on a technicality; she has 17 pop hits, but all were from 1939 to 1955 – all before the 1958 establishment of the Hot 100. Stereophonic sound Stereophonic sound , or more commonly stereo ,

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2912-513: The 3-D production of The Charge at Feather River , and Island in the Sky . Unfortunately, as of 2012, the stereo magnetic tracks to both these films are considered lost forever. In addition, a large percentage of 3-D films carried variations on three-track magnetic sound: It Came from Outer Space ; I, the Jury ; The Stranger Wore a Gun ; Inferno ; Kiss Me, Kate ; and many others. Inspired by Cinerama ,

3003-410: The 70 mm prints would be mixed for stereo, while the 35 mm reduction prints would be remixed for mono. Some films shot in 35 mm, such as Camelot , featured four-track stereophonic sound and were then blown up to 70 mm so that they could be shown on a giant screen with six-track stereophonic sound. Unfortunately however, many of these presentations were only pseudo stereo, utilizing

3094-551: The CinemaScope 55 mm system. Current DVDs of the two CinemaScope feature titles were transferred from the original 55 mm negatives, often including the separate 35 mm films as extras for comparison. Beginning in 1957, films recorded in stereo (except for those shown in Cinerama or Todd-AO) carried an alternate mono track for theatres not ready or willing to re-equip for stereo. From then until about 1975, when Dolby Stereo

3185-633: The King of Siam , The Day the Earth Stood Still and Sun Valley Serenade which, along with Orchestra Wives , feature the only stereophonic recordings of the Glenn Miller Orchestra as it was during its heyday of the Swing Era . Walt Disney began experimenting with multichannel sound in the early 1930s as noted above. The first commercial motion picture to be exhibited with stereophonic sound

3276-464: The United States (yet purchased in the U.S. as imports) are not eligible to chart. A long-standing policy rendering titles that are sold exclusively by specific retail outlets (such as Walmart and Starbucks ) ineligible for charting, was reversed on November 7, 2007, and took effect in the issue dated November 17, 2007. On December 13, 2014, Billboard began to include on-demand streaming and digital track sales (as measured by Nielsen SoundScan) using

3367-458: The artistic adjustment of overall volume and the relative volume of each track in relation to the others. Stokowski, who was always interested in sound reproduction technology personally participated in the enhancement of the sound at the demonstration. The speakers produced sound levels of up to 100 decibels, and the demonstration held the audience "spellbound, and at times not a little terrified", according to one report. Sergei Rachmaninoff , who

3458-462: The consolidated "Top LPs" chart debuted in 1963. In 1982, Billboard began publishing a "Midline Albums" chart (alternatively titled "Midline LPs"), which ranked older or mid-priced titles. The chart held 50 positions and was published on a biweekly (and later triweekly) basis. On May 25, 1991, Billboard premiered the " Top Pop Catalog Albums " chart, the criteria for which were albums that were more than 18 months old and had fallen below no. 100 on

3549-457: The disc would mask the music after just a few plays. The development of acetate, bakelite, and vinyl, and the production of radio broadcast transcriptions helped to solve this. Once these considerably quieter compounds were developed, it was discovered that the rubber-idler-wheel-driven turntables of the period had a great deal of low-frequency rumble – but only in the lateral plane. So, even though with all other factors being equal,

3640-495: The discovery of AC bias . A 1944 recording of Anton Bruckner 's Symphony No. 8 directed by Herbert von Karajan and the Orchester der Berliner Staatsoper and a 1944 or 1945 recording of Walter Gieseking playing Beethoven 's Piano Concerto No. 5 (with anti-aircraft fire audible in the background) are the only recordings still known to exist. In the US, stereo magnetic tape recording

3731-428: The dishonesty that's rife in this business." Starting with the issue dated December 5, 2009, however, the catalog limitations – which removed albums over 18 months old that had dropped below No. 100 and had no currently running singles – for the Billboard 200 were lifted, turning the chart into an all-inclusive list of the 200 highest-selling albums in the country (essentially changing " Top Comprehensive Albums " into

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3822-457: The first week of December to the final week in November. This altered calendar allows for Billboard to calculate year-end charts and release them in time for its final print issue in the last week of December. Prior to Nielsen SoundScan, year-end charts were calculated by an inverse-point system based solely on an album's performance on the Billboard 200 (e.g., an album would be given one point for

3913-418: The following year's chart as well, as their cumulative points are split between the two chart-years. In 2015, Billboard compiled a ranking of the 100 best-performing albums on the Billboard 200 over its 52 years, along with the best-performing artists. Shown below are the top 10 albums and top 10 artists over the 52-year period of the Billboard 200, through October 2015. Also shown are the artists placing

4004-399: The increase in album sales as the early 1950s format wars stabilized into market dominance by 45 RPM singles and long-playing 12-inch albums – and with 78 RPM record and long-playing 10-inch album sales decreasing dramatically – Billboard premiered a weekly "Best-Selling Popular Albums" chart on March 24, 1956. The position count varied anywhere from 10 to 30 albums. The first no. 1 album on

4095-498: The inner track. Each groove needed its own monophonic needle and cartridge on its own branch of the tonearm, and each needle was connected to a separate amplifier and speaker. This setup was intended to demonstrate Cook's cutter heads at a New York audio fair. It was not intended to promote the binaural process; but soon afterward, the demand for such recordings and the equipment to play them grew, and Cook's company, Cook Records, began to produce such records commercially. Cook recorded

4186-401: The introduction of digital cinema , Dolby Surround 7.1 and Dolby Atmos in 2010 and 2012 respectively. The progress of stereophonic sound was paced by the technical difficulties of recording and reproducing two or more channels in synchronization with one another and by the economic and marketing issues of introducing new audio media and equipment. A stereo system cost up to twice as much as

4277-402: The issue dated November 30, 2024, the number-one album on the chart is Golden Hour: Part.2 by Ateez . Billboard began an album chart in 1945. Initially only five positions long, the album chart was not published on a weekly basis, with weeks sometimes passing before it was updated. A biweekly (though with a few gaps), 15-position "Best-Selling Popular Albums" chart appeared in 1955. With

4368-412: The latter of which used up to four separate magnetic soundtracks. VistaVision took a simplified, low-cost approach to stereophonic sound; its Perspecta system featured only a monaural track, but through subaudible tones, it could change the direction of the sound to come from the left, right or both directions at once. Because of the standard 35 mm-size film, CinemaScope and its stereophonic sound

4459-479: The left center and right center channels for LFE (low-frequency enhancement) utilizing the bass units of the otherwise redundant intermediate front speakers, and later the unused HF capacity of these channels to provide for stereo surround in place of the mono surround. Dolby Stereo was succeeded by Dolby Digital 5.1 in the cinema, which retained the Dolby Stereo 70 mm 5.1 channel layout, and more recently with

4550-400: The left channel was recorded laterally and the right channel was recorded vertically, still utilizing a standard 3-mil 78-RPM groove, over three times larger than the modern LP stylus of the late 20th Century. In this system all the low-frequency rumble was in the left channel and all the high-frequency distortion was in the right channel. Over a quarter of a century later, it was decided to tilt

4641-652: The main stereo and mono album charts. Mono albums were moved to the "Essential Inventory – Mono" chart (25 positions) after spending 40 weeks on the "Mono Action Chart", and stereo albums were moved to the "Essential Inventory – Stereo" chart (20 positions) after 20 weeks on the "Stereo Action Chart". In January 1961, the "Action Charts" became "Action Albums – Stereophonic" (15 positions) and "Action Albums – Monophonic" (24 positions). Albums appeared on either chart for up to nine weeks, and were then moved to an "Essential Inventory" list of approximately 200 titles and with no numerical ranking. This list continued to be published until

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4732-407: The most albums on the overall "all-time" top 100 album list. Source: Source: Source: List of acts with the most weeks at number one on the Billboard 200 since August 17, 1963. List of acts who reached number one on the Billboard 200 with a new album in consecutive calendar years since August 17, 1963. The following artists are the only ones with 30 or more top-10 albums: Note: As

4823-561: The movie industry moved quickly to create simpler and cheaper widescreen systems, the first of which, Todd-AO , was developed by Broadway promoter Michael Todd with financial backing from Rodgers and Hammerstein, to use a single 70 mm film running at 30 frames per second with 6 magnetic soundtracks, for their screen presentation of Oklahoma! . Major Hollywood studios immediately rushed to create their own unique formats, such as MGM 's Camera 65 , Paramount Pictures ' VistaVision and Twentieth Century-Fox Film Corporation 's CinemaScope ,

4914-480: The movies in 1927, the speed of radio program transcriptions was reduced to match, once again to inhibit playback of the discs on normal home consumer equipment. Even though the stylus size remained the same as consumer records at either 3 mils (76 μm) or 2.7 mils (69 μm), the disc size was increased from 12 inches (30 cm) to the same 16 inches (41 cm) as those used in early talking pictures in order to create further incompatibility. Now, not only could

5005-753: The new weekly list was Belafonte by Harry Belafonte . The chart was renamed "Best-Selling Pop Albums" later in 1956, and then "Best-Selling Pop LPs" in 1957. Beginning on May 25, 1959, Billboard split the ranking into two charts: "Best-Selling Stereophonic LPs" for stereo albums (30 positions) and "Best-Selling Monophonic LPs" for mono albums (50 positions). These were renamed "Stereo Action Charts" (30 positions) and "Mono Action Charts" (40 positions), respectively, in 1960. In January 1961, they became "Action Albums – Stereophonic" (15 positions) and "Action Albums – Monophonic" (25 positions), and three months later, they became "Top LPs – Stereo" (50 positions) and "Top LPs – Monaural" (150 positions). On August 17, 1963,

5096-597: The orchestra's conductor, was present in Constitution Hall to control the sound mix. Five years later, the same system would be expanded onto multichannel film recording and used from the concert hall in Philadelphia to the recording labs at Bell Labs in New Jersey in order to record Walt Disney 's Fantasia (1940) in what Disney called Fantasound . Later that same year, Bell Labs also demonstrated binaural sound, at

5187-425: The other three. The film was not initially a financial success, however, after two months of road-show exhibition in selected cities, its soundtrack was remixed into mono sound for general release. It was not until its 1956 re-release that stereo sound was restored to the film. A Cinerama demonstration film by Lowell Thomas and Mike Todd titled This is Cinerama was released on September 30, 1952. The format

5278-540: The process, Carousel and The King and I , were released in 35 mm CinemaScope reduction prints. To compensate, the premiere engagement of Carousel used a six-track magnetic full-coat in an interlock, and a 1961 re-release of The King and I , featured the film printed down to 70 mm with a six-channel soundtrack. Eventually, 50 complete sets of combination 55/35 mm projectors and penthouse reproducers were completed and delivered by Century and Ampex, respectively, and 55 mm release print sound equipment

5369-421: The recording head 45 degrees off to the right side so that both the low-frequency rumble and high-frequency distortion were shared equally by both channels, producing the 45/45 system we know today. In 1952, Emory Cook (1913–2002), who already had become famous by designing new feedback disk-cutter heads to improve sound from tape to vinyl, took the two-channel high-fidelity system described above and developed

5460-423: The records not be played on home equipment due to incompatible recording format and speed, they would not even fit on the player, which suited the copyright holders. An experimental format in the 1920s split the signal into two parts, bass and treble, and recording the treble on its own track near the edge of the disc in a lateral format minimizing high-frequency distortion, and recording the bass on its own track in

5551-583: The same left, center, right and surround sound of the original CinemaScope system of 1953 by using a single standard-width optical track. This important development, marketed as Dolby Stereo , finally brought stereo sound to so-called flat (non- anamorphic ) widescreen films, most commonly projected at aspect ratios of 1.75:1 or 1.85:1. Producers often took advantage of the six magnetic soundtracks available for 70 mm film release prints, and productions shot in either 65 mm or to save money, in 35 mm and then blown up to 70 mm. In these instances,

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5642-688: The same year, twenty-five years before that method became the standard for stereo phonograph discs. These discs used the two walls of the groove at right angles in order to carry the two channels. In 1934, Blumlein recorded Mozart 's Jupiter Symphony conducted by Sir Thomas Beecham at Abbey Road Studios in London using his vertical-lateral technique. Much of the development work on this system for cinematic use did not reach completion until 1935. In Blumlein's short test films (most notably, "Trains at Hayes Station", which lasts 5 minutes 11 seconds, and, "The Walking & Talking Film"), his original intent of having

5733-635: The screen, two surround channels in the rear of the theater, plus a sync track to interlock the four machines, which were specially outfitted with aircraft servo-motors made by Ampex . The advent of multitrack magnetic tape and film recording of this nature made high-fidelity synchronized multichannel recording more technically straightforward, though costly. By the early 1950s, all of the major studios were recording on 35 mm magnetic film for mixing purposes, and many of these so-called individual angles still survive, allowing for soundtracks to be remixed into stereo or even surround. In April 1953, while This

5824-486: The signal is known as a pan-pot (panoramic potentiometer). By combining multiple pan-potted mono signals together, a complete, yet entirely artificial, sound field can be created. In technical usage, true stereo means sound recording and sound reproduction that uses stereographic projection to encode the relative positions of objects and events recorded. During two-channel stereo recording, two microphones are placed in strategically chosen locations relative to

5915-430: The somewhat disconcerting effect of the actor being on one side of the screen whilst his voice appeared to come from the other. Blumlein declared to his wife that he had found a way to make the sound follow the actor across the screen. The genesis of these ideas is uncertain, but he explained them to Isaac Shoenberg in the late summer of 1931. His earliest notes on the subject are dated 25 September 1931, and his patent had

6006-454: The sound follow the actor was fully realized. In the United States, Harvey Fletcher of Bell Laboratories was also investigating techniques for stereophonic recording and reproduction. One of the techniques investigated was the wall of sound , which used an enormous array of microphones hung in a line across the front of an orchestra. Up to 80 microphones were used, and each fed a corresponding loudspeaker, placed in an identical position, in

6097-405: The sound source, with both recording simultaneously. The two recorded channels will be similar, but each will have distinct time-of-arrival and sound-pressure-level information. During playback, the listener's brain uses those subtle differences in timing and sound level to triangulate the positions of the recorded objects. Since each microphone records each wavefront at a slightly different time,

6188-469: The sound system developed for House of Wax , dubbed WarnerPhonic, was a combination of a 35 mm fully coated magnetic film that contained the audio tracks for left, center and right speakers, interlocked with the two dual-strip Polaroid system projectors, one of which carried a mono optical surround track and one that carried a mono backup track use in the event anything should go wrong. Only two other films featured this unique hybrid WarnerPhonic sound:

6279-454: The stereo album chart; it was number one for 12 weeks on the mono album chart. ‡ The South Pacific soundtrack ran for 28 weeks at number one on the stereo album chart; it was number one for three weeks on the mono album chart. § This is the Blue Hawaii album's run on the mono album chart; it was number one for four weeks on the stereo album chart. Notes: Here are the albums to complete

6370-428: The stereo and mono charts were combined into a 150-position chart called "Top LPs". On April 1, 1967, the chart was expanded to 175 positions, and then finally to 200 positions on May 13, 1967. In February 1972, the album chart's title was changed to "Top LPs & Tape"; in 1984, it was retitled "Top 200 Albums"; in 1985, it was retitled again to "Top Pop Albums"; in 1991, it became the " Billboard 200 Top Albums"; and it

6461-406: The term stereophonic also applies to systems with more than two channels or speakers such as quadraphonic and surround sound . Binaural sound systems are also stereophonic . Stereo sound has been in common use since the 1970s in entertainment media such as broadcast radio, recorded music, television, video cameras , cinema, computer audio, and internet. The word stereophonic derives from

6552-425: The title "Improvements in and relating to Sound-transmission, Sound-recording and Sound-reproducing Systems". The application was dated 14 December 1931, and was accepted on 14 June 1933 as UK patent number 394,325 . The patent covered many ideas in stereo, some of which are used today and some not. Some 70 claims include: Blumlein began binaural experiments as early as 1933, and the first stereo discs were cut later

6643-401: The top 10 for 5 consecutive weeks. Note: Had the  Billboard 200 allowed catalog albums to chart previous to December 5, 2009, Michael Jackson  would have claimed six simultaneous top 10 titles for two consecutive weeks and  The Beatles  would have claimed five simultaneous top 10 titles that year. † The West Side Story soundtrack ran for 53 weeks at number one on

6734-537: The tracking week begins on Friday (to coincide with the Global Release Day of the music industry ) and ends on Thursday. A new chart is published the following Tuesday, post dated to the Saturday of that week, four days later. The chart's streaming schedule is also tracked from Friday to Thursday. Digital downloads of albums are included in Billboard 200 tabulation. Albums that are not licensed for retail sale in

6825-438: The traditional Billboard 200 methodology but is based exclusively on SoundScan's sales data. Beginning on January 18, 2020, Billboard incorporated video and audio data from YouTube , along with visual plays from streaming services like Apple Music , Spotify, Tidal and Vevo , into the Billboard 200. The change has also impacted Billboard 's genre-specific album charts. Billboard 's "chart year" runs from

6916-496: The two telephones, the sound takes a special character of relief and localization which a single receiver cannot produce... This phenomenon is very curious, it approximates to the theory of binauricular audition, and has never been applied, we believe, before to produce this remarkable illusion to which may almost be given the name of auditive perspective. This two-channel telephonic process was commercialized in France from 1890 to 1932 as

7007-464: The vertical plane of recording on disc had the higher fidelity, it was decided to record vertically to produce higher-fidelity recordings on these new materials, for two reasons, the increase in fidelity by avoiding the lateral rumble and to create incompatibility with home phonographs which, with their lateral-only playback systems, would only produce silence from a vertically modulated disc. After 33 + 1 ⁄ 3 RPM recording had been perfected for

7098-458: The wavefronts are out of phase ; as a result, constructive and destructive interference can occur if both tracks are played back on the same speaker. This phenomenon is known as phase cancellation . Coincident-pair microphone arrangements produce stereo recordings with minimal phase difference between channels. Clément Ader demonstrated the first two-channel audio system in Paris in 1881, with

7189-472: Was Walt Disney's Fantasia , released in November 1940, for which a specialized sound process ( Fantasound ) was developed. As in the Carnegie Hall demonstrations six months earlier, Fantasound used a separate film containing four optical soundtracks. Three of the tracks were used to carry left, center and right audio, while the fourth track carried three tones which individually controlled the volume level of

7280-616: Was a widescreen process featuring three separate 35 mm motion picture films plus a separate sound film running in synchronization with one another at 26 fps, adding one picture panel each to the viewer's left and right at 45-degree angles, in addition to the usual front and center panel, creating a truly immersive panoramic visual experience, comparable in some ways to today's curved screen IMAX OMNI . The Cinerama audio soundtrack technology, developed by Hazard E. Reeves , utilized seven discrete sound tracks on full-coat magnetic 35 mm film. The system featured five main channels behind

7371-420: Was achieved by making the recordings in the form of three motion picture soundtracks recorded on a single piece of film with a fourth track being used to regulate volume expansion. This was necessary due to the limitations of dynamic range on optical motion picture film of the period, however, the volume compression and expansion were not fully automatic, but were designed to allow manual studio enhancement ; i.e.,

7462-456: Was also reserved for dramas with a strong reliance on sound effects or music, such as The Graduate . The Westrex Stereo Variable-Area system was developed in 1977 for Star Wars , and was no more expensive to manufacture in stereo than it was for mono. The format employs the same Western Electric/Westrex/Nuoptix RA-1231 recorder, and coupled with QS quadraphonic matrixing technology licensed to Dolby Labs from Sansui, this system can produce

7553-417: Was capable of being retrofitted into existing theaters. CinemaScope 55 was created by the same company in order to use a larger form of the system (55 mm instead of 35 mm) to allow for greater image clarity onscreen, and was supposed to have had 6-track stereo instead of four. However, because the film needed a new, specially designed projector, the system proved impractical, and the two films made in

7644-653: Was delivered by Western Electric. Several samples of 55 mm sound prints can be found in the Sponable Collection at the Film and Television Archives at Columbia University . The subsequently abandoned 55/35 mm Century projector eventually became the Century JJ 70/35MM projector. After this disappointing experience with their proprietary CinemaScope 55 mm system, Fox purchased the Todd-AO system and re-engineered it into

7735-619: Was given its current title of the " Billboard 200" on March 14, 1992. From the end of 1970 to 1985, Billboard also printed a " Bubbling Under the Top LPs " albums chart paired with the " Bubbling Under the Hot 100 " singles chart, which listed albums that had not yet charted on what was then the "Top LPs & Tape" chart. In 1960, Billboard began concurrently publishing album charts that ranked sales of older or mid-priced titles. These "Essential Inventory" charts were divided by stereo and mono albums, and featured titles that had already appeared on

7826-527: Was on hand to try out the new technology, recording onto a special proprietary nine-track sound system at the Academy of Music in Philadelphia, during the making of the movie One Hundred Men and a Girl for Universal Pictures in 1937, after which the tracks were mixed down to one for the final soundtrack. A year later, MGM started using three tracks instead of one to record the musical selections of movie soundtracks, and very quickly upgraded to four. One track

7917-549: Was part of an all-Russian program including Mussorgsky 's Pictures at an Exhibition in the Ravel orchestration, excerpts of which were also recorded in stereo. Bell Laboratories gave a demonstration of three-channel stereophonic sound on April 27, 1933, with a live transmission of the Philadelphia Orchestra from Philadelphia to Constitution Hall in Washington, D.C. over multiple Class A telephone lines. Leopold Stokowski, normally

8008-493: Was present at the demonstration, commented that it was "marvellous" but "somehow unmusical because of the loudness." "Take that Pictures at an Exhibition ", he said. "I didn't know what it was until they got well into the piece. Too much 'enhancing', too much Stokowski." In 1937, Bell Laboratories in New York City gave a demonstration of two-channel stereophonic motion pictures, developed by Bell Labs and Electrical Research Products, Inc. Once again, conductor Leopold Stokowski

8099-431: Was run separately through the plating process, lined up to match, and subsequently mounted in a press. The dual-sided stereo disc was then played vertically, first in a system that featured two tonearms on the same post facing one another. The system had trouble keeping the two tonearms in their respective synchronous revolutions. Five years later, Bell Labs was experimenting with a two-channel lateral-vertical system, where

8190-597: Was used for dialogue, two for music, and one for sound effects. The very first two-track recording MGM made (although released in mono) was "It Never Rains But What It Pours" by Judy Garland , recorded on June 21, 1938, for the movie Love Finds Andy Hardy . In the early 1940s, composer-conductor Alfred Newman directed the construction of a sound stage equipped for multichannel recording for 20th Century Fox studios. Several soundtracks from this era still exist in their multichannel elements, some of which have been released on DVD, including How Green Was My Valley , Anna and

8281-428: Was used for the first time in films, most motion pictures – even some from which stereophonic soundtrack albums were made, such as Zeffirelli 's Romeo and Juliet  – were still released in monaural sound, stereo being reserved almost exclusively for expensive musicals such as West Side Story , My Fair Lady and Camelot , or epics such as Ben-Hur and Cleopatra . Stereo

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