1.
Manufacturing
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Manufacturing is the value added to production of merchandise for use or sale using labour and machines, tools, chemical and biological processing, or formulation. Manufacturing engineering or manufacturing process are the steps through which raw materials are transformed into a final product, the manufacturing process begins with the product design, and materials specification from which the product is made. These materials are modified through manufacturing processes to become the required part. Manufacturing takes turns under all types of economic systems, in a free market economy, manufacturing is usually directed toward the mass production of products for sale to consumers at a profit. In a collectivist economy, manufacturing is more directed by the state to supply a centrally planned economy. In mixed market economies, manufacturing occurs under some degree of government regulation, modern manufacturing includes all intermediate processes required the production and integration of a products components. Some industries, such as semiconductor and steel manufacturers use the term fabrication instead, the manufacturing sector is closely connected with engineering and industrial design. Examples of major manufacturers in North America include General Motors Corporation, General Electric, Procter & Gamble, General Dynamics, Boeing, Pfizer, examples in Europe include Volkswagen Group, Siemens, and Michelin. Examples in Asia include Sony, Huawei, Lenovo, Toyota, Samsung, in its earliest form, manufacturing was usually carried out by a single skilled artisan with assistants. In much of the world, the guild system protected the privileges. Before the Industrial Revolution, most manufacturing occurred in rural areas, entrepreneurs organized a number of manufacturing households into a single enterprise through the putting-out system. Toll manufacturing is an arrangement whereby a first firm with specialized equipment processes raw materials or semi-finished goods for a second firm, manufacturing provides important material support for national infrastructure and for national defense. On the other hand, most manufacturing may involve significant social and environmental costs, the clean-up costs of hazardous waste, for example, may outweigh the benefits of a product that creates it. Hazardous materials may expose workers to health risks and these costs are now well known and there is effort to address them by improving efficiency, reducing waste, using industrial symbiosis, and eliminating harmful chemicals. The negative costs of manufacturing can also be addressed legally, developed countries regulate manufacturing activity with labor laws and environmental laws. Across the globe, manufacturers can be subject to regulations and pollution taxes to offset the costs of manufacturing activities. Labor unions and craft guilds have played a role in the negotiation of worker rights. Environment laws and labor protections that are available in developed nations may not be available in the third world, tort law and product liability impose additional costs on manufacturing
2.
Polyphony and monophony in instruments
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Polyphony is a property of musical instruments that means that they can play multiple notes simultaneously. Instruments featuring polyphony are said to be polyphonic, instruments that are not capable of polyphony are monophonic or paraphonic. A monophonic synthesizer or monosynth is a synthesizer that produces one note at a time. Well-known monosynths include the Minimoog, the Roland TB-303, and the Korg Prophecy, duophonic synthesizers, such as the ARP Odyssey and Formanta Polivoks built in the 1970s and 1980s respectively, have a capability to independently play two pitches at a time. These synthesizers have at least two oscillators that are controllable, and a duophonic keyboard that can generate two control voltage signals for the lowest- and highest-note. When two or more keys are pressed simultaneously, the lowest- and highest-note will be heard, when only one key is pressed, both oscillators are assigned to one note, possibly with a more complex sound. The earliest polyphonic synthesizers were built in the late-1930s, but the concept did not become popular until the mid-1970s, harald Bodes Warbo Formant Orguel, developed in 1937, was an archetype of a voice allocation polyphonic synthesizer. Novachord by Hammond Organ Company, released in 1939, is a product of frequency divider organs. It uses octave divider technology to generate polyphony, and about 1,000 Novachords were manufactured until 1942, using an octave divider a synthesizer needs only 12 oscillators - one for each note in the musical scale. The additional notes are generated by dividing down the outputs of these oscillators, to produce a note one octave lower, the frequency of the oscillator is divided by two. Polyphony is achieved so long as one of each note in the scale is played simultaneously. One notable early polyphonic synthesizer was the Sequential Circuits Prophet 5, six-voice polyphony was standard by the middle 1980s. With the advent of synthesizers, 16-voice polyphony became standard by the late 1980s. 64-voice polyphony was common by the middle 1990s and 128-note polyphony arrived shortly after, there are several reasons for providing such large numbers of simultaneous notes, Even with only ten fingers, it is possible to play more than ten notes at once. Notes may continue to sound even after a key is released, the synthesizers resources may still be in use to produce the sound of the previously struck notes tapering off, especially when a sustain pedal is used. A sound may be generated by more than one oscillator or sound-source to allow more complicated sounds to be produced, a synthesizer with 16 oscillators may be capable of 16-note polyphony only when simple, single-oscillator sounds are produced. If a particular patch requires four oscillators, then the synthesizer is only capable of four-note polyphony, synthesizers may be configured to produce multiple timbres, particularly necessary when sounds are layered or sequenced. Multitimbral instruments are always polyphonic but polyphonic instruments are not necessarily multitimbral, some multitimbral instruments have a feature which allows the user to specify the amount of polyphony reserved or allowed for each timbre
3.
Synthesizer
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A synthesizer is an electronic musical instrument that generates electric signals that are converted to sound through instrument amplifiers and loudspeakers or headphones. Synthesizers may either imitate instruments like piano, Hammond organ, flute, vocals, natural sounds like ocean waves, etc. or generate new electronic timbres. Synthesizers without built-in controllers are called sound modules, and are controlled via USB, MIDI or CV/gate using a controller device. Synthesizers use various methods to generate electronic signals, synthesizers were first used in pop music in the 1960s. In the 1970s, synths were used in disco, especially in the late 1970s, in the 1980s, the invention of the relatively inexpensive, mass market Yamaha DX7 synth made synthesizers widely available. 1980s pop and dance music often made use of synthesizers. In the 2010s, synthesizers are used in genres of pop, rock. Contemporary classical music composers from the 20th and 21st century write compositions for synthesizer, the beginnings of the synthesizer are difficult to trace, as it is difficult to draw a distinction between synthesizers and some early electric or electronic musical instruments. One of the earliest electric musical instruments, the telegraph, was invented in 1876 by American electrical engineer Elisha Gray. He accidentally discovered the sound generation from a self-vibrating electromechanical circuit and this musical telegraph used steel reeds with oscillations created by electromagnets transmitted over a telegraph line. Gray also built a simple loudspeaker device into later models, consisting of a diaphragm in a magnetic field. This instrument was a remote electromechanical musical instrument that used telegraphy, though it lacked an arbitrary sound-synthesis function, some have erroneously called it the first synthesizer. In 1897, Thaddeus Cahill invented the Teleharmonium, which used dynamos, and was capable of additive synthesis like the Hammond organ, however, Cahills business was unsuccessful for various reasons, and similar but more compact instruments were subsequently developed, such as electronic and tonewheel organs. In 1906, American engineer, Lee De Forest ushered in the electronics age and he invented the first amplifying vacuum tube, called the Audion tube. This led to new entertainment technologies, including radio and sound films, ondes Martenot and Trautonium were continuously developed for several decades, finally developing qualities similar to later synthesizers. In the 1920s, Arseny Avraamov developed various systems of graphic sonic art, in 1938, USSR engineer Yevgeny Murzin designed a compositional tool called ANS, one of the earliest real-time additive synthesizers using optoelectronics. The earliest polyphonic synthesizers were developed in Germany and the United States, during the three years that Hammond manufactured this model,1,069 units were shipped, but production was discontinued at the start of World War II. Both instruments were the forerunners of the electronic organs and polyphonic synthesizers
4.
Analog synthesizer
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An analog synthesizer is a synthesizer that uses analog circuits and analog signals to generate sound electronically. The earliest analog synthesizers in the 1920s and 1930s, such as the Trautonium, were built with a variety of vacuum-tube, after the 1960s, analog synthesizers were built using operational amplifier integrated circuits, and used potentiometers to adjust the sound parameters. Analog synthesizers also use low-pass filters and high-pass filters to modify the sound, the earliest synthesizers used a variety of thermionic-valve and electro-mechanical technologies. Another notable early instrument is the Hammond Novachord, first produced in 1938, early analog synthesizers used technology from electronic analog computers and laboratory test equipment. Synthesizer modules in early synthesizers included voltage-controlled oscillators, voltage-controlled filters. Additionally, they used envelope generators, low-frequency oscillators, and ring modulators, some synthesizers also had effects devices, such as reverb units, or tools such as sequencers or sound mixers. Because many of these modules took input sound signals and processed them, famous modular synthesizer manufacturers included Buchla & Associates, Moog Music, ARP Instruments, Inc. and Electronic Music Studios. Moog established standards recognized worldwide for control interfacing on analog synthesizers, using a logarithmic 1-volt-per-octave pitch control and these control signals were routed using the same types of connectors and cables that were used for routing the synthesized sound signals. A specialized form of analog synthesizer is the analog vocoder, based on equipment developed for speech synthesis, vocoders are often used to make a sound that resembles a musical instrument talking or singing. Patch cords were expensive, could be damaged by use, and made complex patches difficult, thus, later analog synthesizers used the same building blocks, but integrated them into single units, eliminating patch cords in favour of integrated signal routing systems. The most popular of these was the Minimoog, though less flexible than a modular design, normalization made the instrument more portable and easier to use. This first pre-patched synthesizer, the Minimoog, became highly popular, the Minimoog also influenced the design of nearly all subsequent synthesizers, with integrated keyboard, pitch wheel and modulation wheel, and a VCO->VCF->VCA signal flow. In the 1970s, miniaturized solid-state components let manufacturers produce self-contained, portable instruments, Electronic synthesizers quickly become a standard part of the popular-music repertoire. The first movie to use music made with a synthesizer was the James Bond film On Her Majestys Secret Service in 1969, after the release of the film, composers produced a large number of movie soundtracks that featured synthesizers. Notable makers of analog synthesizers included Moog, ARP, Roland, Korg. Because of the complexity of generating even a single note using analog synthesis, polyphonic analog synthesizers featured limited polyphony, typically supporting four voices. Oberheim was a manufacturer of analog polyphonic synthesizers. The Polymoog was an attempt to create a polyphonic analog synthesizer
5.
Attenuator (electronics)
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An attenuator is an electronic device that reduces the power of a signal without appreciably distorting its waveform. An attenuator is effectively the opposite of an amplifier, though the two work by different methods, while an amplifier provides gain, an attenuator provides loss, or gain less than 1. Attenuators are usually passive devices made from simple voltage divider networks, switching between different resistances forms adjustable stepped attenuators and continuously adjustable ones using potentiometers. For higher frequencies precisely matched low VSWR resistance networks are used, fixed attenuators in circuits are used to lower voltage, dissipate power, and to improve impedance matching. Attenuators are also used to match impedance by lowering apparent SWR, basic circuits used in attenuators are pi pads and T pads. These may be required to be balanced or unbalanced depending on whether the line geometry with which they are to be used is balanced or unbalanced. For instance, attenuators used with coaxial lines would be the form while attenuators for use with twisted pair are required to be the balanced form. Four fundamental attenuator circuit diagrams are given in the figures on the left, since an attenuator circuit consists solely of passive resistor elements, it is linear and reciprocal. Key specifications for attenuators are, Attenuation expressed in decibels of relative power, a 3 dB pad reduces power to one half,6 dB to one fourth,10 dB to one tenth,20 dB to one hundredth,30 dB to one thousandth and so on. For voltage you double the dBs so for example 6 dB is half in voltage, nominal impedance, for example 50 ohm Frequency bandwidth, for example DC-18 GHz Power dissipation depends on mass and surface area of resistance material as well as possible additional cooling fins. Above SHF special waveguide structure is required, important characteristics are, accuracy, low SWR, flat frequency-response and repeatability. The size and shape of the attenuator depends on its ability to dissipate power, RF attenuators are used as loads for and as known attenuation and protective dissipation of power in measuring RF signals. Power attenuator Guitar amplifier This section concerns pi-pads, T-pads and L-pads made entirely from resistors, all impedance, currents, voltages and two-port parameters will be assumed to be purely real. For practical applications, this assumption is often close enough, the pad is designed for a particular load impedance, ZLoad, and a particular source impedance, Zs. The impedance seen looking into the port will be ZS if the output port is terminated by ZLoad. The impedance seen looking into the port will be ZLoad if the input port is terminated by ZS. The attenuator two-port is generally bidirectional, however, in this section it will be treated as though it were one way. In general, either of the two figures above applies, but the figure on the left will be assumed most of the time
6.
MIDI
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A single MIDI link can carry up to sixteen channels of information, each of which can be routed to a separate device. These messages are sent via a MIDI cable to other devices where they control sound generation, a simple example of a MIDI setup is the use of a MIDI controller such as an electronic musical keyboard to trigger sounds created by a sound module. This MIDI data can also be recorded into a hardware or software device called a sequencer, advantages of MIDI include compactness, ease of modification and manipulation and a wide choice of electronic instruments and synthesizer or digitally-sampled sounds. MIDI technology was standardized in 1983 by a panel of industry representatives. In June 1981, Roland founder Ikutaro Kakehashi proposed the idea of standardization to Oberheim Electronics founder Tom Oberheim, in October 1981, Kakehashi, Oberheim and Smith discussed the idea with representatives from Yamaha, Korg and Kawai. Smith proposed this standard at the Audio Engineering Society show in November 1981, MIDIs development was announced to the public by Robert Moog, in the October 1982 edition of Keyboard magazine. By the time of the January 1983 Winter NAMM Show, Smith was able to demonstrate a MIDI connection between his Prophet 600 analog synthesizer and a Roland JP-6, the MIDI Specification was published in August 1983. The MIDI standard was unveiled by Ikutaro Kakehashi and Dave Smith, MIDIs appeal was originally limited to professional musicians and record producers who wanted to use electronic instruments in the production of popular music. The standard allowed different instruments to speak with other and with computers. This interoperability allowed one device to be controlled from another, which reduced the amount of hardware musicians needed to own, MIDIs introduction coincided with the dawn of the personal computer era and the introductions of samplers and digital synthesizers. The creative possibilities brought about by MIDI technology have been credited as having helped to revive the industry in the 1980s. MIDI introduced many capabilities which transformed the way musicians work, MIDI sequencing made it possible for a user with no notation skills to build complex arrangements. A musical act with as few as one or two members, each operating multiple MIDI-enabled devices, could deliver a performance which sounds similar to that of a larger group of musicians. By performing preproduction in an environment, an artist can reduce recording costs by arriving at a recording studio with a song that is already partially completed and worked out. Educational technology enabled by MIDI has transformed music education and those new to the subject of MIDI might confuse it with digital audio. MIDI symbolically represents a note, whereas digital audio represents the sound produced by the note, MIDI was invented so that musical instruments could communicate with each other and so that one instrument can control another. Analog synthesizers that have no digital component and were built prior to MIDIs development can be retrofit with kits that convert MIDI messages into analog control voltages. When a note is played on a MIDI instrument, it generates a signal that can be used to trigger a note on another instrument
7.
Progressive rock
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Progressive rock is a broad subgenre of rock music that developed in the United Kingdom and United States throughout the mid to late 1960s. Prog is based on fusions of styles, approaches and genres, Prog saw a high level of popularity in the early-to-mid 1970s, but faded soon after. Conventional wisdom holds that the rise of rock caused this. Music critics, who labelled the concepts as pretentious and the sounds as pompous and overblown. Early groups who exhibited progressive features are described as proto-prog. In 1967, progressive rock constituted a diversity of loosely associated style codes, the Canterbury scene, originating in the late 1960s, denoted a subset of prog bands who emphasised the use of wind instruments, complex chord changes and long improvisations. Rock in Opposition, from the late 1970s, was more avant-garde, in the 1980s, a new subgenre, neo-progressive rock, enjoyed some commercial success, although it was also accused of being derivative and lacking in innovation. Post-progressive draws upon newer developments in music and the avant-garde since the mid 1970s. The term progressive rock is synonymous with art rock, classical rock, historically, art rock has been used to describe at least two related, but distinct, types of rock music. Similarities between the two terms are that they describe a mostly British attempt to elevate rock music to new levels of artistic credibility. However, art rock is likely to have experimental or avant-garde influences. Prog was devised in the 1990s as a term, but later became a transferable adjective. Although a unidirectional English progressive style emerged in the late 1960s, by 1967, critics of the genre often limit its scope to a stereotype of long solos, overlong albums, fantasy lyrics, grandiose stage sets and costumes, and an obsessive dedication to technical skill. Author Kevin Holm-Hudson believes that rock is a style far more diverse than what is heard from its mainstream groups. They each do so largely unconsciously, academic John S. Cotner contests Macans view that progressive rock cannot exist without the continuous and overt assimilation of classical music into rock. Debate about the criteria and scope of the genre continues in the 2010s. In early references to the music, progressive was partly related to progressive politics, Cotner also says that progressive rock incorporates both formal and eclectic elements, It consists of a combination of factors – some of them intramusical, others extramusical or social. One way of conceptualising rock and roll in relation to music is that progressive music pushed the genre into greater complexity while retracing the roots of romantic
8.
Jazz
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Jazz is a music genre that originated amongst African Americans in New Orleans, United States, in the late 19th and early 20th centuries, and developed from roots in Blues and Ragtime. Since the 1920s jazz age, jazz has become recognized as a form of musical expression. Jazz is characterized by swing and blue notes, call and response vocals, polyrhythms, Jazz has roots in West African cultural and musical expression, and in African-American music traditions including blues and ragtime, as well as European military band music. Although the foundation of jazz is deeply rooted within the Black experience of the United States, different cultures have contributed their own experience, intellectuals around the world have hailed jazz as one of Americas original art forms. As jazz spread around the world, it drew on different national, regional, and local musical cultures, New Orleans jazz began in the early 1910s, combining earlier brass-band marches, French quadrilles, biguine, ragtime and blues with collective polyphonic improvisation. In the 1930s, heavily arranged dance-oriented swing big bands, Kansas City jazz, bebop emerged in the 1940s, shifting jazz from danceable popular music toward a more challenging musicians music which was played at faster tempos and used more chord-based improvisation. Cool jazz developed in the end of the 1940s, introducing calmer, smoother sounds and long, modal jazz developed in the late 1950s, using the mode, or musical scale, as the basis of musical structure and improvisation. Jazz-rock fusion appeared in the late 1960s and early 1970s, combining jazz improvisation with rock rhythms, electric instruments. In the early 1980s, a form of jazz fusion called smooth jazz became successful. Other styles and genres abound in the 2000s, such as Latin, the question of the origin of the word jazz has resulted in considerable research, and its history is well documented. It is believed to be related to jasm, a term dating back to 1860 meaning pep. The use of the word in a context was documented as early as 1915 in the Chicago Daily Tribune. Its first documented use in a context in New Orleans was in a November 14,1916 Times-Picayune article about jas bands. In an interview with NPR, musician Eubie Blake offered his recollections of the slang connotations of the term, saying, When Broadway picked it up. That was dirty, and if you knew what it was, the American Dialect Society named it the Word of the Twentieth Century. Jazz has proved to be difficult to define, since it encompasses such a wide range of music spanning a period of over 100 years. Attempts have been made to define jazz from the perspective of other musical traditions, in the opinion of Robert Christgau, most of us would say that inventing meaning while letting loose is the essence and promise of jazz. As Duke Ellington, one of jazzs most famous figures, said, although jazz is considered highly difficult to define, at least in part because it contains so many varied subgenres, improvisation is consistently regarded as being one of its key elements
9.
Disco
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Disco is a genre of dance music containing elements of funk, soul, pop, and salsa. It achieved popularity during the mid-1970s to the early 1980s, Disco can be seen as a reaction against both the domination of rock music and the stigmatization of dance music by the counterculture during this period. It was popular with men and women, from many different backgrounds. The disco sound often has several components, a beat, an eighth note or 16th note hi-hat pattern with an open hi-hat on the off-beat. In most disco tracks, string sections, horns, electric piano, Orchestral instruments such as the flute are often used for solo melodies, and lead guitar is less frequently used in disco than in rock. Many disco songs use electronic synthesizers, particularly in the late 1970s, well-known 1970s disco performers included Donna Summer, the Bee Gees, Boney M. KC and the Sunshine Band, The Trammps, Sylvester, Village People, Gloria Gaynor and Chic. While performers and singers garnered much attention, record producers working behind the scenes played an important role in developing the disco sound. Many non-disco artists recorded songs at the height of discos popularity. Disco was the last mass popular movement that was driven by the baby boom generation. Disco was a phenomenon, but its popularity drastically declined in the United States in 1980. Disco Demolition Night, an anti-disco protest held in Chicago on 12 July 1979, is thought of as a factor in discos fast. By the late 1970s most major U. S. cities had thriving disco club scenes, Studio 54, a venue popular amongst celebrities, is a well-known example of a disco club. Popular dances included the Hustle, a suggestive dance. Discotheque-goers often wore expensive, extravagant and sexy fashions, Disco clubs were also associated with promiscuity. Disco was a key influence on the 1980s electronic dance style called house. The term is derived from discothèque, by the early 1940s, the terms disc jockey and DJ were in use to describe radio presenters. During WWII, because of restrictions set in place by the Nazi occupiers, eventually more than one of these jazz venues had the proper name discothèque. By 1959, the term was used in Paris to describe any of these type of nightclubs and that year a young reporter named Klaus Quirini started to select and introduce records at the Scotch-Club in Aachen, West Germany
10.
Rock music
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It has its roots in 1940s and 1950s rock and roll, itself heavily influenced by blues, rhythm and blues and country music. Rock music also drew strongly on a number of genres such as electric blues and folk. Musically, rock has centered on the guitar, usually as part of a rock group with electric bass guitar. Typically, rock is song-based music usually with a 4/4 time signature using a verse-chorus form, like pop music, lyrics often stress romantic love but also address a wide variety of other themes that are frequently social or political in emphasis. Punk was an influence into the 1980s on the subsequent development of subgenres, including new wave, post-punk. From the 1990s alternative rock began to rock music and break through into the mainstream in the form of grunge, Britpop. Similarly, 1970s punk culture spawned the visually distinctive goth and emo subcultures and this trio of instruments has often been complemented by the inclusion of other instruments, particularly keyboards such as the piano, Hammond organ and synthesizers. The basic rock instrumentation was adapted from the blues band instrumentation. A group of musicians performing rock music is termed a rock band or rock group, Rock music is traditionally built on a foundation of simple unsyncopated rhythms in a 4/4 meter, with a repetitive snare drum back beat on beats two and four. Melodies are often derived from older musical modes, including the Dorian and Mixolydian, harmonies range from the common triad to parallel fourths and fifths and dissonant harmonic progressions. Critics have stressed the eclecticism and stylistic diversity of rock, because of its complex history and tendency to borrow from other musical and cultural forms, it has been argued that it is impossible to bind rock music to a rigidly delineated musical definition. These themes were inherited from a variety of sources, including the Tin Pan Alley pop tradition, folk music and rhythm, as a result, it has been seen as articulating the concerns of this group in both style and lyrics. Christgau, writing in 1972, said in spite of some exceptions, rock and roll usually implies an identification of male sexuality, according to Simon Frith rock was something more than pop, something more than rock and roll. Rock musicians combined an emphasis on skill and technique with the concept of art as artistic expression, original. The foundations of music are in rock and roll, which originated in the United States during the late 1940s and early 1950s. Its immediate origins lay in a melding of various musical genres of the time, including rhythm and blues and gospel music, with country. In 1951, Cleveland, Ohio disc jockey Alan Freed began playing rhythm and blues music for a multi-racial audience, debate surrounds which record should be considered the first rock and roll record. Other artists with rock and roll hits included Chuck Berry, Bo Diddley, Fats Domino, Little Richard, Jerry Lee Lewis
11.
Electronic music
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In general, a distinction can be made between sound produced using electromechanical means and that produced using electronic technology. Examples of electromechanical sound producing devices include the telharmonium, Hammond organ, purely electronic sound production can be achieved using devices such as the theremin, sound synthesizer, and computer. During the 1920s and 1930s, electronic instruments were introduced and the first compositions for instruments were composed. Musique concrète, created in Paris in 1948, was based on editing together recorded fragments of natural and industrial sounds, Music produced solely from electronic generators was first produced in Germany in 1953. Electronic music was created in Japan and the United States beginning in the 1950s. An important new development was the advent of computers for the purpose of composing music, algorithmic composition was first demonstrated in Australia in 1951. In America and Europe, live electronics were pioneered in the early 1960s, during the 1970s to early 1980s, the monophonic Minimoog became once the most widely used synthesizer at that time in both popular and electronic art music. In the 1980s, electronic music became dominant in popular music, with a greater reliance on synthesizers, and the adoption of programmable drum machines. Electronically produced music became prevalent in the domain by the 1990s. Contemporary electronic music includes many varieties and ranges from art music to popular forms such as electronic dance music. Today, pop music is most recognizable in its 4/4 form. At the turn of the 20th century, experimentation with emerging electronics led to the first electronic musical instruments and these initial inventions were not sold, but were instead used in demonstrations and public performances. The audiences were presented with reproductions of existing music instead of new compositions for the instruments, while some were considered novelties and produced simple tones, the Telharmonium accurately synthesized the sound of orchestral instruments. It achieved viable public interest and made progress into streaming music through telephone networks. Critics of musical conventions at the time saw promise in these developments, ferruccio Busoni encouraged the composition of microtonal music allowed for by electronic instruments. He predicted the use of machines in future music, writing the influential Sketch of a New Esthetic of Music, futurists such as Francesco Balilla Pratella and Luigi Russolo began composing music with acoustic noise to evoke the sound of machinery. They predicted expansions in timbre allowed for by electronics in the influential manifesto The Art of Noises, developments of the vacuum tube led to electronic instruments that were smaller, amplified, and more practical for performance. In particular, the theremin, ondes Martenot and trautonium were commercially produced by the early 1930s, from the late 1920s, the increased practicality of electronic instruments influenced composers such as Joseph Schillinger to adopt them
12.
Moog modular synthesizer
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A Moog modular synthesizer is a monophonic analog modular synthesizer developed by the American electronic instrument pioneer Dr. Robert Moog. Many different models were manufactured by R. A, in 1964, Robert Moog created one of the first modular voltage-controlled music synthesizers, and demonstrated it at the AES convention that year. Moog also established standards for analog synthesizer control interfacing, with a logarithmic one volt-per-octave pitch control, the first Moog system was bought by choreographer Alwin Nikolais. Lothar and the Hand People began using the modular Moog in 1965, dolenz use of the Moog on Daily Nightly highlighted the Moogs ability to add atmosphere to a recording, while Beavers use of it on Star Collector was more straightforward. It was Wendy Carlos 1968 Switched-On Bach which featured Carlos custom-built modular synthesizer as the instrument on the recording which brought widespread interest to the Moog synthesizer. Shortly after, Keith Emerson, Jan Hammer, Klaus Schulze, Tangerine Dream, The Beatles, the Moog modular system consists of a number of various modules mounted in a cabinet. Each module performs a specific signal-generating or -modifying function and these modules offered unprecedented control over creating sounds by allowing a user to modify primary sound waveforms with amplitude modulators and spectral modulators and other modifiers. Envelope generators provided further control by modulating the attack, decay, sustain and release parameters of the VCAs, VCFs, the modules are patched together with patch cords with ¼-inch mono plugs. The patch cords and module parameter knobs could be adjusted in ways to create a nearly infinite number of sounds. The final sound was heard from the system by pressing a key on a keyboard or pressing on the ribbon controller. The Moog modular synthesizer offered musicians a revolutionary new way to sound when it was released in the 1960s. It was originally intended for use in recording studios and universities and was not intended for musicians for use in live performance, the analog electronics of the system often made sound generation unreliable and unpredictable during live performances. Additionally, modular sounds could not be programmed and stored for retrieval due to the analog nature. Changing sounds on the system was a task requiring the physical re-routing of numerous patch cords. Another common problem is the Moogs incompatibility with the voltage used in most other synthesizers of the time. In spite of all its shortcomings, a few artists successfully toured with Moog modular systems, in the early and experimental days of electronic instruments, R. A Moog Co. sold made-to-order synthesizer systems composed of whatever modules the musician desired. Starting in 1967, the company manufacturing a number of pre-assembled stock modular systems that contained a predetermined number of modules. Later on, these systems were manufactured and modified based on customer specifications, produced from 1967–72, the earliest Moog modular systems were named the Moog 3, Moog 2, and Moog 1
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