Analog Synthesis
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Analog Synthesis
An analog (or analogue) 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 (thermionic valve) and electro-mechanical technologies. After the 1960s, analog synthesizers were built using operational amplifier (op-amp) integrated circuits, and used potentiometers (pots, or variable resistors) to adjust the sound parameters. Analog synthesizers also use low-pass filters and high-pass filters to modify the sound. While 1960s-era analog synthesizers such as the Moog used a number of independent electronic modules connected by patch cables, later analog synthesizers such as the Minimoog integrated them into single units, eliminating patch cords in favour of integrated signal routing systems. History 1900–1920 The earliest mention of a "synthetic harmoniser" using electricity appears to be in 1906, creat ...
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Minimoog
The Minimoog is an analog synthesizer first manufactured by Moog Music between 1970 and 1981. Designed as a more affordable, portable version of the modular Moog synthesizer, it was the first synthesizer sold in retail stores. It was first popular with progressive rock and jazz musicians and found wide use in disco, pop, rock and electronic music. Production of the Minimoog stopped in the early 1980s after the sale of Moog Music. In 2002, founder Robert Moog regained the rights to the Moog brand, bought the company, and released an updated version of the Minimoog, the Minimoog Voyager. In 2016 and in 2022, Moog Music released another new version of the original Minimoog. Development In the 1960s, RA Moog Co manufactured Moog synthesizers, which helped bring electronic sounds to music but remained inaccessible to ordinary people. These modular synthesizers were difficult to use and required users to connect components manually with patch cables to create sounds. They were a ...
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Georges Jenny
Georges Marcel Charles Jenny (29 April 1913 – 23 September 1975) was a French musician, poet, and electronic instrument builder. His best-known invention was an electronic keyboard instrument called the Ondioline (sometimes referred to as the Jenny Ondioline). It is considered a forerunner of the Synthesizer. The Ondioline is monophonic, yet it is capable of generating an array of sounds, and features a keyboard that produces a natural-sounding vibrato via side-to-side finger movements when keys are depressed. Development of the instrument Jenny conceived the instrument as a low-cost alternative to the then-well known but expensive Ondes Martenot. The Martenot was used in serious music, but Jenny planned the Ondioline for a broader consumer market, including pop music. He began constructing his first prototype around 1939 (the instrument was as yet unnamed) while recovering from tuberculosis at a sanatorium in the south of France. After the instrument was further refined, Jenn ...
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Envelope Generator
In sound and music, an envelope describes how a sound changes over time. It may relate to elements such as amplitude (volume), frequencies (with the use of filters) or pitch. For example, a piano key, when struck and held, creates a near-immediate initial sound which gradually decreases in volume to zero. Envelope generators, which allow users to control the different stages of a sound, are common features of synthesizers, samplers, and other electronic musical instruments. The most common form of envelope generator is controlled with four parameters: attack, decay, sustain and release (ADSR). Development The Hammond Novachord in 1938 used an early implementation of an ADSR envelope. A seven-position rotary knob selects preset ADS parameter for all 72 notes; a pedal controls the release. The envelope generator was created by the American engineer Robert Moog in the 1960s. While experimenting with the first Moog synthesizers, composer Herbert Deutsch suggested Moog find a ...
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Voltage-controlled Amplifier
A variable-gain (VGA) or voltage-controlled amplifier (VCA) is an electronic amplifier that varies its gain depending on a control voltage (often abbreviated CV). VCAs have many applications, including audio level compression, synthesizers and amplitude modulation. A crude example is a typical inverting op-amp configuration with a light-dependent resistor (LDR) in the feedback loop. The gain of the amplifier then depends on the light falling on the LDR, which can be provided by an LED (an optocoupler). The gain of the amplifier is then controllable by the current through the LED. This is similar to the circuits used in optical audio compressors. A voltage-controlled amplifier can be realised by first creating a voltage-controlled resistor (VCR), which is used to set the amplifier gain. The VCR is one of the numerous interesting circuit elements that can be produced by using a JFET (junction field-effect transistor) with simple biasing. VCRs manufactured in this way can be ...
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Voltage-controlled Filter
A voltage-controlled filter (VCF) is an electronic filter whose operating characteristics (primarily cutoff frequency) can be set by an input control voltage. Voltage controlled filters are widely used in synthesizers. A music synthesizer VCF allows its cutoff frequency, and sometimes its Q factor (resonance at the cutoff frequency), to be continuously varied. The filter outputs often include a lowpass response, and sometimes highpass, bandpass or notch responses. Some musical VCFs offer a variable ''slope'' which determines the rate of attenuation outside the bandpass, often at 6 dB/octave, 12 dB/octave, 18 dB/octave or 24 dB/octave (one-, two-, three- and four-pole filters, respectively). In modular analog synthesizers, VCFs receive signal input from signal sources, including oscillators and noise, or the output of other processors. By varying the cutoff frequency, the filter passes or attenuates partials of the input signal. In some popular electroni ...
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Voltage-controlled Oscillator
A microwave (12–18GHz) voltage-controlled oscillator A voltage-controlled oscillator (VCO) is an electronic oscillator whose oscillation frequency is controlled by a voltage input. The applied input voltage determines the instantaneous oscillation frequency. Consequently, a VCO can be used for frequency modulation (FM) or phase modulation (PM) by applying a modulating signal to the control input. A VCO is also an integral part of a phase-locked loop. VCOs are used in synthesizers to generate a waveform whose pitch can be adjusted by a voltage determined by a musical keyboard or other input. A voltage-to-frequency converter (VFC) is a special type of VCO designed to be very linear in frequency control over a wide range of input control voltages. Types VCOs can be generally categorized into two groups based on the type of waveform produced. * ''Linear'' or '' harmonic oscillators'' generate a sinusoidal waveform. Harmonic oscillators in electronics usually consist of a re ...
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Patchbay
A patch panel is a device or unit featuring a number of jacks, usually of the same or similar type, for the use of connecting and routing circuits for monitoring, interconnecting, and testing circuits in a convenient, flexible manner. Patch panels are commonly used in computer networking, recording studios, and radio and television Television, sometimes shortened to TV, is a telecommunication medium for transmitting moving images and sound. The term can refer to a television set, or the medium of television transmission. Television is a mass medium for advertisin .... The term ''patch'' came from early use in telephony and radio studios, where extra equipment kept on standby could be temporarily substituted for failed devices. This reconnection was done via patch cords and patch panels, like the jack fields of cord-type telephone switchboards. Terminology They are also referred to as a patch bay, patch field, jack panel or jack field. Uses and connectors In re ...
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Novachord
The Novachord is an electronic musical instrument often considered the world's first commercial polyphonic synthesizer. All-electronic, incorporating many circuit and control elements found in modern synthesizers, and using subtractive synthesis to generate tones, it was designed by John M. Hanert, Laurens Hammond and C. N. Williams, and was manufactured by the Hammond company. Only 1,069 Novachords were built over a period from 1939 to 1942. It was one of very few electronic products released by Hammond that was not intended to emulate the sound of an organ. History of production While production of the Novachord began in November 1938, it was first heard at the 1939 New York World's Fair. The Novachord Orchestra of Ferde Grofé performed daily at the Ford stand with four Novachords and a Hammond Organ. The first instrument was delivered to President Franklin D. Roosevelt on January 30, 1940 as a birthday present. The Novachord was not well-suited to the technique of organist ...
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Evgeny Murzin
Yevgeny Murzin (russian: Евгений Мурзин; 1914–1970) was a Russian audio engineer and inventor of the ANS synthesizer. Murzin's synthesizer In 1938, invented a design for composers based on synthesizing complex musical sounds from a limited number of pure tones; this proposed system was to perform music without musicians or musical instruments. The technological basis of his invention was the method of photo-optic sound recording used in cinematography, which made it possible to obtain a visible image of a sound wave, as well as to realize the opposite goal—synthesizing a sound from an artificially drawn sound wave. Despite the apparent simplicity of his idea of reconstructing a sound from its visible image, the technical realization of the ANS as a musical instrument did not occur until twenty years later. Murzin was an engineer who worked in areas unrelated to music, and the development of the ANS synthesizer was a hobby and he had many problems realizing on ...
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ANS Synthesizer
The ANS synthesizer is a photoelectronic musical instrument created by Russian engineer Evgeny Murzin from 1937 to 1957. The technological basis of his invention was the method of graphical sound recording used in cinematography (developed in Russia concurrently with USA), which made it possible to obtain a visible image of a sound wave, as well as to realize the opposite goal— synthesizing a sound from an artificially drawn sound spectrogram. In this case the sine waves generated by the ANS are printed onto five glass discs using a process that Murzin (an optical engineer) had to develop himself. Each disc has 144 individual tracks printed onto it, for a total of 720 microtones (discrete pitches), spanning 10 octaves. This yields a resolution of 1/72 octave (16.67 cents). The modulated light from these wheels is then projected onto the back of the synthesizer's interface. These are arranged in a continuous swath vertically, with low frequencies at the bottom and high fr ...
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Raymond Scott
Raymond Scott (born Harry Warnow; September 10, 1908 – February 8, 1994) was an American composer, band leader, pianist, record producer, and inventor of electronic instruments. Though Scott never scored cartoon soundtracks, his music is familiar to millions because Carl Stalling adapted it in over 120 Bugs Bunny, Porky Pig, Daffy Duck, and other Warner Bros. ''Looney Tunes'' and ''Merrie Melodies'' cartoons. His compositions may also be heard in ''The Ren and Stimpy Show'' (which uses Scott's recordings in twelve episodes), ''The Simpsons'', ''Duckman'', ''Animaniacs'', ''The Oblongs'', ''Batfink'', and '' Bluey''. The only time he composed to accompany animation was three 20-second commercial jingles for County Fair Bread in 1962. Early life and career Scott was born in Brooklyn, New York to Russian Jewish immigrants, Joseph and Sarah Warnow. His older brother, Mark Warnow, was a conductor, violinist, and musical director for the CBS radio program ''Your Hit Parade'' ...
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Electronium
The Electronium, created by Raymond Scott, is an early combined electronic synthesizer and algorithmic composition / generative music machine. Its place in history is unusual, because while in intention it is analogous to the digital algorithmic composition systems that would follow it, it was implemented entirely as an analog electronic machine. Development was begun in 1959, with a workable unit by 1969. Scott, however, never ceased to modify and further develop the device by the time of his death in 1994. Chusid, Irwinbr>Beethoven-in-a-box: Raymond Scott's electronium Contemporary Music Review,18(3):9-14 1999. It was one of the very few electronic creations of Scott to be sold to a customer, as he was normally highly secretive about his devices. A single Electronium machine was sold to Motown Records, following a 1969 meeting between Scott and Motown's Berry Gordy. The initial contract required that Scott visited Motown for three months to teach staff how the machine is used. ...
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