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118-672: The C86 name was a play on the labelling and length of blank compact cassette , commonly C60, C90 and C120, combined with 1986. The tape was a belated follow-up to C81 , a more eclectic collection of new bands, released by the NME in 1981 in conjunction with Rough Trade . C86 was similarly designed to reflect the new music scene of the time. It was compiled by NME writers Roy Carr , Neil Taylor and Adrian Thrills, who licensed tracks from labels including Creation , Subway , Probe Plus , Dan Treacy 's Dreamworld Records, Jeff Barrett 's Head Records, Pink, and Ron Johnson . Readers had to pay for

236-489: A Red Book CD; thus, the mono source material is usually presented as two identical channels in a standard Red Book stereo track (i.e., mirrored mono ); an MP3 CD , can have audio file formats with mono sound. CD-Text is an extension of the Red Book specification for an audio CD that allows for the storage of additional text information (e.g., album name, song name, artist) on a standards-compliant audio CD. The information

354-437: A personal computer hard disk drive . Several other formats were further derived, both pre-pressed and blank user writable, including write-once audio and data storage ( CD-R ), rewritable media ( CD-RW ), Video CD (VCD), Super Video CD (SVCD), Photo CD , Picture CD , Compact Disc-Interactive ( CD-i ), Enhanced Music CD , and Super Audio CD (SACD) which may have a CD-DA layer. The optophone , first presented in 1913,

472-525: A phone connector converts the electrical signals to be read by the tape head, while mechanical gears simulate reel to reel movement without actual tapes when driven by the player mechanism. In order to wind up the tape more reliably, the former BASF (from 1998 EMTEC ) patented the Special Mechanism or Security Mechanism advertised with the abbreviation SM in the early 1970s, which was temporarily used under license by Agfa . This feature each includes

590-469: A 150-minute playing time, 44,056 Hz sampling rate, 16-bit linear resolution, and cross-interleaved Reed-Solomon coding (CIRC) error correction code —specifications similar to those later settled upon for the standard compact disc format in 1980. Technical details of Sony's digital audio disc were presented during the 62nd AES Convention, held on 13–16 March 1979, in Brussels . Sony's AES technical paper

708-597: A CD. VCDs are playable in dedicated VCD players, most modern DVD-Video players, personal computers, and some video game consoles. The VCD standard was created in 1993 by Sony, Philips, Matsushita , and JVC and is referred to as the White Book standard. Overall picture quality is intended to be comparable to VHS video. Poorly compressed VCD video can sometimes be of lower quality than VHS video, but VCD exhibits block artifacts rather than analog noise and does not deteriorate further with each use. 352×240 (or SIF ) resolution

826-636: A US affiliate of Philips, introduced M.C. to the US in July 1966. The initial offering consisted of 49 titles. However, the system had been designed initially for dictation and portable use, with the audio quality of early players not well suited for music. Some early models also had an unreliable mechanical design. In 1971, the Advent Corporation introduced their Model 201 tape deck that combined Dolby type B noise reduction and chromium(IV) oxide (CrO 2 ) tape, with

944-599: A boom in bootleg cassettes made at live shows in the 1980s. The Walkman dominated the decade, selling up to 350 million units. So synonymous did the name "Walkman" become with all portable music players—with a German dictionary at one point defining the term as such without reference to Sony—that the Austrian Supreme Court ruled in 2002 that Sony, which had not sought to have the publisher of that dictionary retract that definition, could not prevent other companies from using that name, as it had now become genericized. As

1062-409: A cassette. Very simple cassette recorders for dictation purposes did not tightly control tape speed and relied on playback on a similar device to maintain intelligible recordings. For accurate reproduction of music, a tape transport incorporating a capstan and pinch roller system was used, to ensure tape passed over the record/playback heads at a constant speed. If the cassette is held with one of

1180-709: A commercial-grade tape transport mechanism supplied by the Wollensak camera division of 3M Corporation. This resulted in the format being taken more seriously for musical use, and started the era of high fidelity cassettes and players. British record labels began releasing compact cassettes in October 1967, and they exploded as a mass-market medium after the first Walkman , the TPS-L2, went on sale on 1 July 1979, as cassettes provided portability, which vinyl records could not. While portable radios and boom boxes had been around for some time,

1298-399: A continuation of the increasingly slower speed series in open-reel machines operating at 30, 15, 7 + 1 ⁄ 2 , or 3 + 3 ⁄ 4 inches per second. For comparison, the typical open-reel 1 ⁄ 4 -inch 4-track consumer format used tape that is 0.248 inches (6.3 mm) wide, each track .043 in (1.1 mm) wide, and running at either twice or four times the speed of

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1416-531: A continuous demand for English language cassettes, as of 2011, due to the affordable cost. National Audio Company in Missouri, the largest of the few remaining manufacturers of audio cassettes in the US, oversaw the mass production of the "Awesome Mix #1" cassette from the film Guardians of the Galaxy in 2014. They reported that they had produced more than 10 million tapes in 2014 and that sales were up 20 percent

1534-495: A deluxe gatefold sleeved double- LP edition for Record Store Day 2016. Cherry Red Records issued an imagined sequel compilation titled C87 in 2016, followed by C88 , C89 , C90 , C91 and the prequel C85 . Compact Cassette The Compact Cassette , also commonly called a cassette tape , audio cassette , or simply tape or cassette , is an analog magnetic tape recording format for audio recording and playback . Invented by Lou Ottens and his team at

1652-419: A diameter of 120 mm (4.7 in), and are designed to hold up to 74 minutes of uncompressed stereo digital audio or about 650   MiB ( 681,574,400  bytes) of data. Capacity is routinely extended to 80 minutes and 700  MiB ( 734,003,200  bytes), 90 minutes 800  MiB ( 838,860,800  bytes), or 99 minutes 870  MiB ( 912,261,120  bytes) by arranging data more closely on

1770-475: A diameter of 20 cm (7.9 in) and a sound quality superior to that of the vinyl record. However, due to the unsatisfactory performance of the analog format, two Philips research engineers recommended a digital format in March 1974. In 1977, Philips then established a laboratory with the mission of creating a digital audio disc. The diameter of Philips's prototype compact disc was set at 11.5 cm (4.5 in),

1888-417: A disc played from beginning to end slows its rotation rate during playback. The program area is 86.05 cm and the length of the recordable spiral is 86.05 cm / 1.6 μm = 5.38 km. With a scanning speed of 1.2 m/s, the playing time is 74 minutes or 650 MiB of data on a CD-ROM. A disc with data packed slightly more densely is tolerated by most players (though some old ones fail). Using

2006-437: A double-coating technique to enhance overall tape output levels. This product was marketed as "High Energy" under its Scotch brand of recording tapes. Inexpensive cassettes commonly are labeled "low-noise", but typically are not optimized for high frequency response . For this reason, some low-grade IEC Type I tapes have been marketed specifically as better suited for data storage than for sound recording. In 1968, DuPont ,

2124-497: A foothold for Western culture among the younger generations. Likewise, in Egypt cassettes empowered an unprecedented number of people to create culture, circulate information, and challenge ruling regimes before the internet became publicly accessible. One of the political uses of cassette tapes was the dissemination of sermons by the exiled Ayatollah Khomeini throughout Iran before the 1979 Iranian Revolution , in which Khomeini urged

2242-400: A former member of the task force, gives background information on the many technical decisions made, including the choice of the sampling frequency, playing time, and disc diameter. The task force consisted of around 6 persons, though according to Philips, the compact disc was "invented collectively by a large group of people working as a team". Early milestones in the launch and adoption of

2360-465: A graphics signal (typically, the CD+G player is hooked up to a television set or a computer monitor); these graphics are almost exclusively used to display lyrics on a television set for karaoke performers to sing along with. The CD+G format takes advantage of the channels R through W. These six bits store the graphics information. CD + Extended Graphics (CD+EG, also known as CD+XG) is an improved variant of

2478-553: A joint task force of engineers to design a new digital audio disc. Led by engineers Kees Schouhamer Immink and Toshitada Doi , the research pushed forward laser and optical disc technology. After a year of experimentation and discussion, the task force produced the Red Book CD-DA standard. First published in 1980, the standard was formally adopted by the IEC as an international standard in 1987, with various amendments becoming part of

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2596-410: A large margin. Philips was competing with Telefunken and Grundig (with their DC International format ) in a race to establish its cassette tape as the worldwide standard, and it wanted support from Japanese electronics manufacturers. Philips' Compact Cassette became dominant as a result of Sony pressuring Philips to license the format to them free of charge. In the early years sound quality

2714-419: A lesser extent in hardcore punk , death metal , and black metal circles, out of a fondness for the format. Even among major-label stars, the form has at least one devotee: Thurston Moore stated in 2009, "I only listen to cassettes." By 2019, few companies still made cassettes. Among those are National Audio Company, from the US, and Mulann, also known as Recording The Masters, from France. Sony announced

2832-453: A linear velocity of 1.2 m/s and a narrower track pitch of 1.5 μm increases the playing time to 80 minutes, and data capacity to 700 MiB. Even denser tracks are possible, with semi-standard 90 minute/800 MiB discs having 1.33 μm, and 99 minute/870 MiB having 1.26 μm, but compatibility suffers as density increases. A CD is read by focusing a 780 nm wavelength ( near infrared ) semiconductor laser through

2950-469: A malfunctioning CD writer . Error scanning can reliably predict data losses caused by media deterioration. Support of error scanning differs between vendors and models of optical disc drives , and extended error scanning (known as "advanced error scanning" in Nero DiscSpeed ) has only been available on Plextor and some BenQ optical drives so far, as of 2020. The digital data on a CD begins at

3068-619: A new band album (this time a CD ) by releasing C96 . This had little impact, with Mogwai and Broadcast being the only acts on the compilation to subsequently enjoy mainstream success. Three other bands on the compilation - Babybird , The Delgados and Urusei Yatsura - had brief success in the United Kingdom after the compilation's release. NME have also collaborated with Rough Trade Records to release C09 in 2009 for Record Store Day and with Bose Corporation to release C23 in 2023 for South by Southwest . The significance of C86

3186-606: A new digital audio disc. After a year of experimentation and discussion, the Red Book CD-DA standard was published in 1980. After their commercial release in 1982, compact discs and their players were extremely popular. Despite costing up to $ 1,000, over 400,000 CD players were sold in the United States between 1983 and 1984. By 1988, CD sales in the United States surpassed those of vinyl LPs, and, by 1992, CD sales surpassed those of prerecorded music-cassette tapes. The success of

3304-456: A period in the 1990s. Another barrier to cassettes overtaking vinyl in sales was shoplifting ; compact cassettes were small enough that a thief could easily place one inside a pocket and walk out of a shop without being noticed. To prevent this, retailers in the US would place cassettes inside oversized "spaghetti box" containers or locked display cases , either of which would significantly inhibit browsing, thus reducing cassette sales. During

3422-423: A protective plastic shell which is 4 by 2.5 by 0.5 inches (10.2 cm × 6.35 cm × 1.27 cm) at its largest dimensions. The tape itself is commonly referred to as "eighth-inch" tape, supposedly 1 ⁄ 8 inch (0.125 in; 3.17 mm) wide, but actually slightly larger, at 0.15 inches (3.81 mm). Two stereo pairs of tracks (four total) or two monaural audio tracks are available on

3540-474: A rail to guide the tape to the spool and prevent an unclean roll from forming. Magnetic tape is not an ideal medium for long-term archival storage, as it begins to degrade after 10 – 20 years, with some experts estimating its lifespan to be no more than 30 years. Compact disc The compact disc ( CD ) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. It uses

3658-455: A result of this, a number of Sony's competitors produced their own version of the Walkman. Others made their own branded tape players, like JVC, Panasonic, Sharp, and Aiwa, the second-largest producer of the devices. Between 1985, when cassettes overtook vinyl, and 1992, when they were overtaken by CDs (introduced in 1983 as a format that offered greater storage capacity and more accurate sound),

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3776-501: A trend that continued in 2017 and 2018. In the UK, sales of cassette tapes in 2021 reached its highest number since 2003. Cassettes are favored by some artists and listeners, including those of older genres of music such as dansband , as well as independent and underground artists , some of whom were releasing new music on tape by the 2020s, including Britney Spears and Busta Rhymes . Reasons cited for this include tradition, low cost,

3894-460: A variation of this technique called pulse-density modulation (PDM), while Matsushita (now Panasonic ) chose pulse-width modulation (PWM), advertising it as MASH, which is an acronym derived from their patented Multi-stAge noiSe-sHaping PWM topology. The CD was primarily planned as the successor to the vinyl record for playing music, rather than as a data storage medium. However, CDs have grown to encompass other applications. In 1983, following

4012-451: A worm gear is used, a second shorter-throw linear motor, in the form of a coil and magnet, makes fine position adjustments to track eccentricities in the disk at high speed. Some CD drives (particularly those manufactured by Philips during the 1980s and early 1990s) use a swing arm similar to that seen on a gramophone. The pits and lands do not directly represent the 0s and 1s of binary data . Instead, non-return-to-zero, inverted encoding

4130-414: Is 0.15 in (3.81 mm) wide, with each mono track 1.5 millimetres (0.059 in) wide, plus an unrecorded guard band between each track. In stereo, each track is further divided into a left and a right channel of 0.6 mm (0.024 in) each, with a gap of 0.3 mm (0.012 in). The tape moves past the playback head at 1 + 7 ⁄ 8 inches per second (4.76 cm/s), the speed being

4248-591: Is 3.8 mm. For mono recording the track width is 1.5 mm. In stereo mode each channel has width of 0.6 mm with a 0.3 mm separation to avoid crosstalk . The head-gap width is 2 μm which gives a theoretical maximum frequency of about 12 kHz (at the standard speed of 1 7/8 ips or 4.76 cm/s). A narrower gap would give a higher frequency limit but also weaker magnetization. Cassette tape adapters allow external audio sources to be played back from any tape player, but were typically used for car audio systems. An attached audio cable with

4366-407: Is debatable whether Russell's concepts, patents, and prototypes instigated and in some measure influenced the compact disc's design. The compact disc is an evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality digital audio signals. Unlike the prior art by Optophonie and James Russell, the information on the disc

4484-499: Is described in a document produced in 1980 by the format's joint creators, Sony and Philips. The document is known colloquially as the Red Book CD-DA after the color of its cover. The format is a two-channel 16-bit PCM encoding at a 44.1 kHz sampling rate per channel. Four-channel sound was to be an allowable option within the Red Book format, but has never been implemented. Monaural audio has no existing standard on

4602-478: Is normally used to refer to the Compact Cassette because of its ubiquity. Compact Cassettes contain two miniature spools, between which the magnetically coated, polyester -type plastic film (magnetic tape) is passed and wound —essentially miniaturizing reel-to-reel audio tape and enclosing it, with its reels, in a small case (cartridge)—hence "cassette". These spools and their attendant parts are held inside

4720-407: Is playable in standard CD players, thus making them backward compatible. CD- MIDI is a format used to store music-performance data, which upon playback is performed by electronic instruments that synthesize the audio. Hence, unlike the original Red Book CD-DA, these recordings are not digitally sampled audio recordings. The CD-MIDI format is defined as an extension of the original Red Book . For

4838-510: Is protected by a film of lacquer normally spin coated directly on the reflective layer. The label is printed on the lacquer layer, usually by screen printing or offset printing . CD data is represented as tiny indentations known as pits , encoded in a spiral track molded into the top of the polycarbonate layer. The areas between pits are known as lands . Each pit is approximately 100  nm deep by 500 nm wide, and varies from 850 nm to 3.5  μm in length. The distance between

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4956-514: Is read from a reflective layer using a laser as a light source through a protective substrate. Prototypes were developed by Philips and Sony independently in the late 1970s. Although originally dismissed by Philips Research management as a trivial pursuit, the CD became the primary focus for Philips as the LaserDisc format struggled. In 1979, Sony and Philips set up a joint task force of engineers to design

5074-432: Is stored either in the lead-in area of the CD, where there are roughly five kilobytes of space available or in the subcode channels R to W on the disc, which can store about 31 megabytes. Compact Disc + Graphics is a special audio compact disc that contains graphics data in addition to the audio data on the disc. The disc can be played on a regular audio CD player, but when played on a special CD+G player, it can output

5192-408: Is used: a change from either pit to land or land to pit indicates a 1, while no change indicates a series of 0s. There must be at least two, and no more than ten 0s between each 1, which is defined by the length of the pit. This, in turn, is decoded by reversing the eight-to-fourteen modulation used in mastering the disc, and then reversing the cross-interleaved Reed–Solomon coding , finally revealing

5310-729: The Berlin Radio Show , and in the United States (under the Norelco brand) in November 1964. The trademark name Compact Cassette came a year later. The team of Dutch and Belgian origin at Philips was led by the Dutch Lou Ottens in Hasselt , Belgium. Philips also offered a machine to play and record the cassettes, the Philips Typ EL 3300 . An updated model, Typ EL 3301 was offered in

5428-477: The Compact Disc + Graphics (CD+G) format. Like CD+G, CD+EG uses basic CD-ROM features to display text and video information in addition to the music being played. This extra data is stored in subcode channels R-W. Very few CD+EG discs have been published. Super Audio CD (SACD) is a high-resolution, read-only optical audio disc format that was designed to provide higher-fidelity digital audio reproduction than

5546-591: The Compact Disc Digital Audio format which typically provides 74 minutes of audio on a disc. In later years, the compact disc was adapted for non-audio computer data storage purposes as CD-ROM and its derivatives. First released in Japan in October 1982, the CD was the second optical disc technology to be invented, after the much larger LaserDisc (LD). By 2007, 200 billion CDs (including audio CDs, CD-ROMs and CD-Rs) had been sold worldwide. Standard CDs have

5664-491: The DIY ease of use, and a nostalgic fondness for how the format's imperfections lend greater vibrancy to low-fi, experimental music, despite the lack of the "full-bodied richness" of vinyl. Cassette tapes are made of a polyester-type plastic film with a magnetic coating. The original magnetic material was based on gamma ferric oxide (Fe 2 O 3 ). Circa 1970, 3M Company developed a cobalt volume-doping process combined with

5782-568: The Dutch company Philips , the Compact Cassette was released in August 1963. Compact Cassettes come in two forms, either containing content as a prerecorded cassette ( Musicassette ), or as a fully recordable "blank" cassette. Both forms have two sides and are reversible by the user. Although other tape cassette formats have also existed—for example the Microcassette —the generic term cassette tape

5900-512: The Red Book . Introduced in 1999, it was developed by Sony and Philips, the same companies that created the Red Book . SACD was in a format war with DVD-Audio , but neither has replaced audio CDs. The SACD standard is referred to as the Scarlet Book standard. Titles in the SACD format can be issued as hybrid discs; these discs contain the SACD audio stream as well as a standard audio CD layer which

6018-746: The Revolutionary Left Movement (MIR) made use of cassettes to spread their messages. Cassette technology was a booming market for pop music in India , drawing criticism from conservatives while at the same time creating a huge market for legitimate recording companies, as well as pirated tapes. Some sales channels were associated with cassettes: in Spain filling stations often featured a display selling cassettes. While offering also mainstream music these cassettes became associated with genres such as Gipsy rhumba , light music and joke tapes that were common in

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6136-752: The vinyl revival . During the 2010s, the increasing popularity of solid-state media and music streaming services caused automakers to remove automotive CD players in favor of minijack auxiliary inputs, wired connections to USB devices and wireless Bluetooth connections. Automakers viewed CD players as using up valuable space and taking up weight which could be reallocated to more popular features, like large touchscreens. By 2021, only Lexus and General Motors were still including CD players as standard equipment with certain vehicles. CDs continued to be strong in some markets such as Japan where 132 million units were produced in 2019. The decline in CD sales has slowed in recent years; in 2021, CD sales increased in

6254-712: The 120 mm size was adopted. The adoption of EFM in June 1980 allowed 30 percent more playing time that would have resulted in 97 minutes for 120 mm diameter or 74 minutes for a disc as small as 100 millimetres (3.9 in). Instead, the information density was lowered by 30 percent to keep the playing time at 74 minutes. The 120 mm diameter has been adopted by subsequent formats, including Super Audio CD , DVD , HD DVD , and Blu-ray Disc. The 80-millimetre (3.1 in) diameter discs (" Mini CDs ") can hold up to 24 minutes of music or 210 MiB. The logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA)

6372-446: The 1970s and 1980s. Despite sales of CDs overtaking those of prerecorded cassettes in the early 1990s in the U.S., the format remained popular for specific applications, such as car audio , personal stereos , boomboxes , telephone answering machines , dictation , field recording , home recording , and mixtapes well into the decade. Cassette players were typically more resistant to shocks than CD players, and their lower fidelity

6490-601: The 2000s designed as successors to the CD: the Super Audio CD (SACD) and DVD-Audio . However neither of these were adopted partly due to increased relevance of digital (virtual) music and the apparent lack of audible improvements in audio quality to most human ears. These effectively extended the CD's longevity in the music market. With the advent and popularity of Internet-based distribution of files in lossy-compressed audio formats such as MP3 , sales of CDs began to decline in

6608-502: The 2000s. For example, between 2000 and 2008, despite overall growth in music sales and one anomalous year of increase, major-label CD sales declined overall by 20%. Despite rapidly declining sales year-over-year, the pervasiveness of the technology lingered for a time, with companies placing CDs in pharmacies, supermarkets, and filling station convenience stores to target buyers less likely to be able to use Internet-based distribution. In 2012, CDs and DVDs made up only 34% of music sales in

6726-467: The CD's introduction, Immink and Joseph Braat presented the first experiments with erasable compact discs during the 73rd AES Convention . In June 1985, the computer-readable CD-ROM (read-only memory) and, in 1990, recordable CD-R discs were introduced. Recordable CDs became an alternative to tape for recording and distributing music and could be duplicated without degradation in sound quality. Other newer video formats such as DVD and Blu-ray use

6844-472: The DAC. Even when using high-precision components, this approach was prone to decoding errors. Another issue was jitter , a time-related defect. Confronted with the instability of DACs, manufacturers initially turned to increasing the number of bits in the DAC and using several DACs per audio channel, averaging their output. This increased the cost of CD players but did not solve the core problem. A breakthrough in

6962-498: The US dropped from 442 million in 1990 to 274,000 by 2007. For audiobooks , the final year that cassettes represented more than 50% of total market sales was 2002 when they were replaced by CDs as the dominant media. The last new car with an available cassette player was a 2014 TagAZ AQUiLA. Four years prior, Sony had stopped the production of personal cassette players. In 2011, the Oxford English Dictionary removed

7080-403: The US for the first time since 2004, with Axios citing its rise to "young people who are finding they like hard copies of music in the digital age". It came at the same time as both vinyl and cassette reached sales levels not seen in 30 years. The RIAA reported that CD revenue made a dip in 2022, before increasing again in 2023 and overtook downloading for the first time in over a decade. In

7198-422: The US in November 1964 as Norelco Carry-Corder 150 . By 1966 over 250,000 recorders had been sold in the US alone and Japan soon became the major source of recorders. By 1968, 85 manufacturers had sold over 2.4 million players. By the end of the 1960s, the cassette business was worth an estimated 150 million dollars. By the early 1970s the compact cassette machines were outselling other types of tape machines by

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7316-517: The US, 33.4 million CD albums were sold in the year 2022. In France in 2023, 10.5 million CDs were sold, almost double that of vinyl, but both of them represented generated 12% each of the French music industry revenues. Sony and Philips received praise for the development of the compact disc from professional organizations. These awards include: A CD is made from 1.2-millimetre (0.047 in) thick, polycarbonate plastic, and weighs 14–33 grams. From

7434-620: The United States. By 2015, only 24% of music in the United States was purchased on physical media, two thirds of this consisting of CDs; however, in the same year in Japan, over 80% of music was bought on CDs and other physical formats. In 2018, U.S. CD sales were 52 million units—less than 6% of the peak sales volume in 2000. In the UK, 32 million units were sold, almost 100 million fewer than in 2008. In 2018, Best Buy announced plans to decrease their focus on CD sales, however, while continuing to sell records, sales of which are growing during

7552-483: The Walkman was the first truly personal portable music player, one that not only allowed users to listen to music away from home, but to do so in private. According to the technology news website The Verge, "the world changed" on the day the TPS-L2 was released. Stereo tape decks and boom boxes became some of the most highly sought-after consumer products of both decades, as the ability of users to take their music with them anywhere with ease led to its popularity around

7670-479: The acts on the compilation. The tape included tracks by some more abrasive bands atypical of the perceived C86 jangle pop aesthetic: Stump , Bogshed , A Witness , The Mackenzies , Big Flame and The Shrubs . C86 was the twenty-third NME tape, although its catalogue number was NME022 ( C81 had been dubbed COPY001). The rest of the tapes were compilations promoting labels' back catalogues and dedicated to R&B , Northern soul , jazz or reggae . C86

7788-406: The bottom of the polycarbonate layer. The change in height between pits and lands results in a difference in the way the light is reflected. Because the pits are indented into the top layer of the disc and are read through the transparent polycarbonate base, the pits form bumps when read. The laser hits the disc, casting a circle of light wider than the modulated spiral track reflecting partially from

7906-471: The cassette shell indicate the type of tape. Type I cassettes have only write-protect notches, Type II have an additional pair next to the write protection ones, and Type IV (metal) have a third set near the middle of the top of the cassette shell. These allow later cassette decks to detect the tape type automatically and select the proper bias and equalization. The cassette was the next step following reel-to-reel audio tape recording , although, because of

8024-444: The cassette tape was the most popular format in the United States and the UK. Record labels experimented with innovative packaging designs. A designer during the era explained: "There was so much money in the industry at the time, we could try anything with design." The introduction of the cassette single , called a "cassingle", was also part of this era and featured a music single in Compact Cassette form. Until 2005, cassettes remained

8142-451: The center of the disc and proceeds toward the edge, which allows adaptation to the different sizes available. Standard CDs are available in two sizes. By far, the most common is 120 millimetres (4.7 in) in diameter, with a 74-, 80, 90, or 99-minute audio capacity and a 650, 700, 800, or 870 MiB (737,280,000-byte) data capacity. Discs are 1.2 millimetres (0.047 in) thick, with a 15 millimetres (0.59 in) center hole. The size of

8260-407: The center outward, components are: the center spindle hole (15 mm), the first-transition area (clamping ring), the clamping area (stacking ring), the second-transition area (mirror band), the program (data) area, and the rim. The inner program area occupies a radius from 25 to 58 mm. A thin layer of aluminum or, more rarely, gold is applied to the surface, making it reflective. The metal

8378-450: The compact disc has been credited to the cooperation between Philips and Sony, which together agreed upon and developed compatible hardware. The unified design of the compact disc allowed consumers to purchase any disc or player from any company and allowed the CD to dominate the at-home music market unchallenged. In 1974, Lou Ottens, director of the audio division of Philips, started a small group to develop an analog optical audio disc with

8496-423: The diagonal of an audio cassette. Heitaro Nakajima , who developed an early digital audio recorder within Japan's national public broadcasting organization, NHK , in 1970, became general manager of Sony's audio department in 1971. In 1973, his team developed a digital PCM adaptor that made audio recordings using a Betamax video recorder. After this, in 1974 the leap to storing digital audio on an optical disc

8614-478: The dominant medium for purchasing and listening to music in some developing countries , but compact disc (CD) technology had superseded the Compact Cassette in the vast majority of music markets throughout the world by this time. Compact cassettes served as catalysts for social change. Their small size, durability and ease of copying helped bring underground rock and punk music behind the Iron Curtain , creating

8732-686: The early '70s. By 1968, 85 manufacturers had sold over 2.4 million mono and stereo players. By the end of the 1960s, the cassette business was worth an estimated 150 million dollars. By the early 1970s the compact cassette machines were outselling other types of tape machines by a large margin. The mass production of "blank" (not yet recorded) Compact Cassettes began in 1964 in Hanover , Germany. Prerecorded music cassettes (also known as Music-Cassettes , and later just Musicassettes ; M.C. for short) were launched in Europe in late 1965. The Mercury Record Company ,

8850-498: The early 1960s Philips Eindhoven tasked two different teams to design a tape cartridge for thinner and narrower tape compared to what was used in reel-to-reel tape recorders. By 1962, the Vienna division of Philips developed a single-hole cassette , adapted from its German described name Einloch-Kassette . Philips selected the two-spool cartridge as a winner and introduced the 2-track 2-direction mono version in Europe on 28 August 1963 at

8968-443: The early 1980s some record labels sought to solve this problem by introducing new, larger packages for cassettes which would allow them to be displayed alongside vinyl records and compact discs , or giving them a further market advantage over vinyl by adding bonus tracks . Willem Andriessen wrote that the development in technology allowed "hardware designers to discover and satisfy one of the collective desires of human beings all over

9086-442: The end of cassette Walkman production on 22 October 2010, a result of the emergence of MP3 players such as Apple's iPod. As of 2022, Sony uses the Walkman brand solely for its line of digital media players. In 2010, Botswana-based Diamond Studios announced plans for establishing a plant to mass-produce cassettes in a bid to combat piracy. It opened in 2011. In South Korea, the early English education boom for toddlers encourages

9204-406: The entire market share in regard to US music sales . The CD is considered the last dominant audio format of the album era , as the rise of MP3 , iTunes , cellular ringtones , and other downloadable music formats in the mid-2000s ended the decade-long dominance of the CD. The format was later adapted (as CD-ROM ) for general purpose data storage and initially could hold much more data than

9322-508: The first few years of its existence, the CD was a medium used purely for audio. In 1988, the Yellow Book CD-ROM standard was established by Sony and Philips, which defined a non-volatile optical data computer data storage medium using the same physical format as audio compact discs, readable by a computer with a CD-ROM drive. Video CD (VCD, View CD, and Compact Disc digital video) is a standard digital format for storing video media on

9440-458: The first four UK albums by the Beatles were released in mono on compact disc. The growing acceptance of the CD in 1983 marks the beginning of the popular digital audio revolution. It was enthusiastically received, especially in the early-adopting classical music and audiophile communities, and its handling quality received particular praise. As the price of players gradually came down, and with

9558-520: The following year, their best year since they opened in 1969. In 2016, cassette sales in the United States rose by 74% to 129,000. In 2018, following several years of shortage, National Audio Company began producing their own magnetic tape, becoming the world's first known manufacturer of an all-new tape stock. Mulann, a company which acquired Pyral/RMGI in 2015 and originates from BASF , also started production of its new cassette tape stock in 2018, basing on reel tape formula. In Japan and South Korea,

9676-804: The format included: The first artist to sell a million copies on CD was Dire Straits , with their 1985 album Brothers in Arms . One of the first CD markets was devoted to reissuing popular music whose commercial potential was already proven. The first major artist to have their entire catalog converted to CD was David Bowie , whose first fourteen studio albums (up to Scary Monsters (and Super Creeps) ) of (then) sixteen were made available by RCA Records in February 1985, along with four greatest hits albums; his fifteenth and sixteenth albums ( Let's Dance and Tonight , respectively) had already been issued on CD by EMI Records in 1983 and 1984, respectively. On 26 February 1987,

9794-456: The globe. Like the transistor radio in the 1950s and 1960s, the portable CD player in the 1990s, and the MP3 player in the 2000s, the Walkman defined the portable music market for the decade of the '80s, with cassette sales overtaking those of LPs . Total vinyl record sales remained higher well into the 1980s due to greater sales of singles, although cassette singles achieved popularity for

9912-522: The hole was chosen by Joop Sinjou and based on a Dutch 10-cent coin: a dubbeltje . Philips/Sony patented the physical dimensions. The official Philips history says the capacity was specified by Sony executive Norio Ohga to be able to contain the entirety of Beethoven's Ninth Symphony on one disc. This is a myth according to Kees Immink , as the EFM code format had not yet been decided in December 1979, when

10030-505: The introduction of the portable Discman , the CD began to gain popularity in the larger popular and rock music markets. With the rise in CD sales, pre-recorded cassette tape sales began to decline in the late 1980s; CD sales overtook cassette sales in the early 1990s. In 1988, 400 million CDs were manufactured by 50 pressing plants around the world. Early CD players employed binary-weighted digital-to-analog converters (DAC), which contained individual electrical components for each bit of

10148-404: The inventor of a chromium dioxide (CrO 2 ) manufacturing process, began commercialization of CrO 2 media. The first CrO 2 cassette was introduced in 1970 by Advent , and later strongly backed by BASF , the inventor and longtime manufacturer of magnetic recording tape. Next, coatings using magnetite (Fe 3 O 4 ) such as TDK 's Audua were produced in an attempt to approach or exceed

10266-476: The label side of the disc. Scratches on the clear side can be repaired by refilling them with similar refractive plastic or by careful polishing. The edges of CDs are sometimes incompletely sealed, allowing gases and liquids to enter the CD and corrode the metal reflective layer and/or interfere with the focus of the laser on the pits, a condition known as disc rot . The fungus Geotrichum candidum has been found—under conditions of high heat and humidity—to consume

10384-1124: The labels facing the user and the tape opening at the bottom, the write-protect notch for the corresponding side is at the top-left. Tape length usually is measured in minutes of total playing time. Many of the varieties of blank tape were C60 (30 minutes per side), C90 (45 minutes per side) and C120 (60 minutes per side). Maxell makes 150-minute cassettes (UR-150) - 75 minutes per side. The C46 and C60 lengths typically are 15 to 16 micrometers (0.59 to 0.63 mils) thick, but C90s are 10 to 11 μm (0.39 to 0.43 mils) and (the less common) C120s are just 6 μm (0.24 mils) thick, rendering them more susceptible to stretching or breakage. Even C180 tapes were available at one point. Other lengths are (or were) also available from some vendors, including C10, C12 and C15 (useful for saving data from early home computers and in telephone answering machines ), C30, C40, C50, C54, C64, C70, C74, C80, C84, C94, C100, C105, C110, and C150. As late as 2010, Thomann still offered C10, C20, C30 and C40 IEC Type II tape cassettes for use with 4- and 8-track portastudios . The full tape width

10502-510: The lands and partially from the top of any bumps where they are present. As the laser passes over a pit (bump), its height means that the round trip path of the light reflected from its peak is 1/2 wavelength out of phase with the light reflected from the land around it. This is because the height of a bump is around 1/4 of the wavelength of the light used, so the light falls 1/4 out of phase before reflection and another 1/4 wavelength out of phase after reflection. This causes partial cancellation of

10620-419: The laser's reflection from the surface. By measuring the reflected intensity change with a photodiode , a modulated signal is read back from the disc. To accommodate the spiral pattern of data, the laser is placed on a mobile mechanism within the disc tray of any CD player. This mechanism typically takes the form of a sled that moves along a rail. The sled can be driven by a worm gear or linear motor . Where

10738-428: The late 1980s culminated in development of the 1-bit DAC , which converts high-resolution low-frequency digital input signal into a lower-resolution high-frequency signal that is mapped to voltages and then smoothed with an analog filter. The temporary use of a lower-resolution signal simplified circuit design and improved efficiency, which is why it became dominant in CD players starting from the early 1990s. Philips used

10856-438: The limitations of the cassette's size and speed, it initially compared poorly in quality. Unlike the 4-track stereo open-reel format, the two stereo tracks of each side lie adjacent to each other, rather than being interleaved with the tracks of the other side. This permitted monaural cassette players to play stereo recordings "summed" as mono tracks and permitted stereo players to play mono recordings through both speakers. The tape

10974-405: The market that use a pure (CrO 2 ) coating. Simple voice recorders and earlier cassette decks are designed to work with standard ferric formulations. Newer tape decks usually are built with switches and later detectors for the different bias and equalization requirements for higher grade tapes. The most common are iron oxide tapes (as defined by the IEC 60094 standard ). Notches on top of

11092-583: The mid-'80s; DIY ethics and any residual punk attitudes were in isolated pockets around the country and the C86 comp and gigs brought them together in an explosion of new groups. Martin Whitehead, who ran Subway in the late 1980s, added a new political dimension to the importance of C86 ."Before C86 , women could only be eye-candy in a band; I think C86 changed that - there were women promoting gigs, writing fanzines and running labels." Some are more ambivalent about

11210-453: The negative myths about the cassette. In 2022, journalist Nige Tassell published the book Whatever Happened to the C86 Kids?: An Indie Odyssey , based on interviews with members of all 22 bands that had appeared on the cassette. It outlines the "many and varied paths through life" these musicians took over a period of more than three decades. In 1996, NME continued the tradition of compiling

11328-526: The overthrow of the regime of the Shah , Mohammad Reza Pahlavi . During the military dictatorship of Chile (1973–1990) a "cassette culture" emerged where blacklisted music or music that was by other reasons not available as records was shared. Some pirate cassette producers created brands such as Cumbre y Cuatro that have in retrospect received praise for their contributions to popular music. Armed groups such as Manuel Rodríguez Patriotic Front (FPMR) and

11446-563: The phrase "cassette player" from its 12th edition Concise version, which prompted some media sources to mistakenly report that the term "cassette tape" was being removed. In India, music continued to be released on the cassette format due to its low cost until 2009. Although portable digital recorders are most common today, analog tape remains a desirable option for certain artists and consumers. Underground and DIY communities release regularly, and sometimes exclusively, on cassette format, particularly in experimental music circles and to

11564-533: The polycarbonate plastic and aluminium found in CDs. The data integrity of compact discs can be measured using surface error scanning , which can measure the rates of different types of data errors, known as C1 , C2 , CU and extended (finer-grain) error measurements known as E11 , E12 , E21 , E22 , E31 and E32 , of which higher rates indicate a possibly damaged or unclean data surface, low media quality, deteriorating media and recordable media written to by

11682-585: The pop acts Seiko Matsuda , SHINee , and NCT 127 released their material on limited-run cassettes. In Reiwa era Japan, the revived popularity of cassette tapes is an example of Showa retro . In the mid-to-late 2010s, cassette sales saw a modest resurgence concurrent with the vinyl revival . As early as 2015, the retail chain Urban Outfitters , which had long sold LPs , started selling new pre-recorded cassettes (both new and old albums), blank cassettes, and players. In 2016, cassette sales increased,

11800-538: The raw data stored on the disc. These encoding techniques (defined in the Red Book ) were originally designed for CD Digital Audio , but they later became a standard for almost all CD formats (such as CD-ROM ). CDs are susceptible to damage during handling and from environmental exposure. Pits are much closer to the label side of a disc, enabling defects and contaminants on the clear side to be out of focus during playback. Consequently, CDs are more likely to suffer damage on

11918-432: The same physical geometry as CD, and most DVD and Blu-ray players are backward compatible with audio CDs. CD sales in the United States peaked by 2000. By the early 2000s, the CD player had largely replaced the audio cassette player as standard equipment in new automobiles, with 2010 being the final model year for any car in the United States to have a factory-equipped cassette player. Two new formats were marketed in

12036-481: The same-sized disc. The Mini CD has various diameters ranging from 60 to 80 millimetres (2.4 to 3.1 in); they have been used for CD singles or delivering device drivers . The CD gained rapid popularity in the 1990s, quickly outselling all other audio formats in the United States by 1991, ending the market dominance of the phonograph record and the cassette tape . By 2000, the CD accounted for 92.3% of

12154-482: The sound quality of vinyl records . Cobalt - adsorbed iron oxide (Avilyn) was introduced by TDK in 1974 and proved very successful. "Type IV" tapes using pure metal particles (as opposed to oxide formulations) were introduced in 1979 by 3M under the trade name Metafine. The tape coating on most cassettes sold as of 2024 are either "normal" or "chrome" consists of ferric oxide and cobalt mixed in varying ratios (and using various processes); there are very few cassettes on

12272-503: The standard in 1996. Philips coined the term compact disc in line with another audio product, the Compact Cassette , and contributed the general manufacturing process , based on video LaserDisc technology. Philips also contributed eight-to-fourteen modulation (EFM), while Sony contributed the error-correction method, CIRC, which offers resilience to defects such as scratches and fingerprints. The Compact Disc Story , told by

12390-402: The tape via mail order, although an LP was subsequently released on Rough Trade on 24 November 1986. The UK music press was in this period highly competitive, with four weekly papers documenting new bands and trends. There was a tendency to create and "discover" new musical subgenres artificially in order to heighten reader interest. NME journalists of the period subsequently agreed that C86

12508-580: The tape's influence. Everett True , a writer for NME in 1986 under the name "The Legend!", called it "unrepresentative of its times . . . and even unrepresentative of the small narrow strata of music it thought it was representing." Alastair Fitchett, editor of the music site Tangents (and a fan of many of the bands on the tape), takes a polemical line: "(The NME ) laid the foundations for the desolate wastelands of what we came to know by that vile term ' Indie '. What more reason do you need to hate it?" The Guardian published an article in 2014 debunking some of

12626-528: The tape; one stereo pair or one monophonic track is played or recorded when the tape is moving in one direction and the second (pair) when moving in the other direction. This reversal is achieved either by manually flipping the cassette when the tape comes to an end, or by the reversal of tape movement, known as "auto-reverse", when the mechanism detects that the tape has ended. After the Second World War , magnetic tape recording technology proliferated across

12744-420: The windings (the pitch ) is 1.6 μm (measured center-to-center, not between the edges). When playing an audio CD, a motor within the CD player spins the disc to a scanning velocity of 1.2–1.4 m/s ( constant linear velocity , CLV)—equivalent to approximately 500 RPM at the inside of the disc, and approximately 200 RPM at the outside edge. The track on the CD begins at the inside and spirals outward so

12862-551: The world, independent of region, climate, religion, culture, race, sex, age and education: the desire to enjoy music at any time, at any place, in any desired sound quality and almost at any wanted price". Critic Robert Palmer , writing in The New York Times in 1981, cited the proliferation of personal stereos as well as extra tracks not available on LP as reasons for the surge in popularity of cassettes. Cassettes' ability to allow users to record content in public also led to

12980-508: The world. In the United States, Ampex , using equipment obtained in Germany as a starting point, began commercial production of tape recorders . First used in studios to record radio programs, tape recorders quickly found their way into schools and homes. By 1953, 1 million US homes had tape machines. In 1958, following four years of development, RCA Victor introduced the stereo, quarter-inch, reversible, reel-to-reel RCA tape cartridge . In

13098-468: Was an early device that used light for both recording and playback of sound signals on a transparent photograph . More than thirty years later, American inventor James T. Russell has been credited with inventing the first system to record digital media on a photosensitive plate. Russell's patent application was filed in 1966, and he was granted a patent in 1970. Following litigation, Sony and Philips licensed Russell's patents for recording in 1988. It

13216-433: Was an example of this, but also a byproduct of NME' s "hip hop wars" - a schism in the paper (and among readers) between enthusiasts of contemporary progressive black music (for example, by Public Enemy and Mantronix ), and fans of guitar-based music, as represented on C86 . NME promoted the tape in conjunction with London's Institute of Contemporary Arts , who staged a week of gigs, in July 1986 which featured most of

13334-459: Was easily made. Sony first publicly demonstrated an optical digital audio disc in September 1976. A year later, in September 1977, Sony showed the press a 30 cm (12 in) disc that could play an hour of digital audio (44,100 Hz sampling rate and 16-bit resolution) using modified frequency modulation encoding. In September 1978, the company demonstrated an optical digital audio disc with

13452-458: Was followed up with a Billie Holiday compilation, Holiday Romance . Ex- NME writer Andrew Collins summed up C86 by dubbing it "the most indie thing to have ever existed". Bob Stanley , a Melody Maker journalist in the late 1980s and founding member of pop band Saint Etienne , similarly said in a 2006 interview that C86 represented: [the] beginning of indie music… It's hard to remember how underground guitar music and fanzines were in

13570-413: Was mediocre, but it improved dramatically by the early 1970s when it caught up with the quality of 8-track tape and kept improving. The Compact Cassette went on to become a popular (and re-recordable ) alternative to the 12-inch vinyl LP during the late 1970s. As with prerecorded reel-to-reel and 8-track, sales were slow to start, but picked up rapidly to tie with the 8-track before superseding it by

13688-501: Was not considered a serious drawback in mobile use. With the introduction of electronic skip protection it became possible to use portable CD players on the go, and automotive CD players became viable. CD-R drives and media also became affordable for consumers around the same time. By 1993, annual shipments of CD players had reached 5 million, up 21% from the year before; while cassette player shipments had dropped 7% to approximately 3.4 million. Sales of pre-recorded music cassettes in

13806-509: Was published on 1 March 1979. A week later, on 8 March, Philips publicly demonstrated a prototype of an optical digital audio disc at a press conference called "Philips Introduce Compact Disc" in Eindhoven , Netherlands. Sony executive Norio Ohga , later CEO and chairman of Sony, and Heitaro Nakajima were convinced of the format's commercial potential and pushed further development despite widespread skepticism. In 1979, Sony and Philips set up

13924-422: Was recognized by several events marking the 20th anniversary of the compilation's release in 2006: Cherry Red 's 2014 expanded reissue was marked by an NME C86 show on 14 June 2014 at Venue 229, London W1; acts from the original compilation included The Wedding Present , David Westlake of The Servants , The Wolfhounds and A Witness . The 30-year anniversary of C86 saw the original compilation issued in

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