- Also called:
- electric organ or electrophonic organ
- Key People:
- Jimmy Smith
electronic organ
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What is an electronic organ?
The electronic organ is a keyboard instrument that produces sound using electronic circuits and loudspeakers, offering a compact, economical substitute for the larger pipe organ.
Electronic organs use oscillators to generate tones, capable of reproducing multiple melodic lines. Early versions include the rotating electromagnetic tone-wheels of the telharmonium (1904), the electronic oscillators of the Coupleux-Givelet organ (1928), and the fan-blown reeds of the Orgatron (1934). The well-known Hammond organ (1934) uses rotary, motor-driven generators to imitate various instrument sounds.
By the 1960s, transistors and solid-state circuitry replaced vacuum tubes, and digital microcircuitry allowed computer organs to sample and store prerecorded sounds.
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How does an electronic organ produce sound?
An electronic organ produces sound using electronic circuits and loudspeakers, offering an economical substitute for the larger pipe organ. Most electronic organs use electronic oscillators to generate tones, with each oscillator varying in frequency to produce different pitches. Unlike most electronic organs, the Hammond organ produces sound through rotary, motor-driven generators.
Vacuum tubes were replaced with transistors and solid-state circuitry in the 1960s. By the 1970s, digital microcircuitry operated computer organs using prerecorded sounds. Some electronic organs employ subtractive synthesis, while others use additive synthesis, combining sine waves to create complex waveforms.
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What are the main parts of an electronic organ?
An electronic organ is a keyboard instrument that produces sound through electronic circuits and loudspeakers, offering an economical substitute for the larger pipe organ.
The main components of a conventional pipe organ are:
* Keyboards/console: including controls
* Pipes: produce tone
* Action: mechanism
* Wind generator: supplies wind to pipes or reedsElectronic organs generate sound using electronic oscillators, with multiple oscillators enabling the reproduction of complex musical pieces. The Hammond organ, a well-known electronic organ, uses rotary, motor-driven generators to produce sound, and controls that allow imitation of various instrumental timbres.
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How is an electronic organ different from a traditional pipe organ?
Electronic organs serve as compact, economical substitutes for pipe organs. Unlike pipe organs that produce sound through air passing through pipes, electronic organs generate tone using electronic circuits and loudspeakers.
Pipe organs are large and complex instruments, products of sophisticated craftsmanship. Electronic organs resemble a spinet piano in size and shape. The electronic organ uses electronic oscillators to produce sound, while the pipe organ uses a series of pipes organized in scalelike rows. The pipe organ has a more extended history, with the basic principles of operation remaining substantially unchanged for over 2,000 years.
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In what types of music or places are electronic organs commonly used?
Electronic organs, designed as compact substitutes for pipe organs, are keyboard instruments that produce sound through electronic circuits and loudspeakers.
These instruments found a place in homes, offering various timbres suited for popular music and features like automatic rhythm. Though a Bach fugue doesn't become electronic music when played on an electronic organ, these organs have been used in theater, film, and television scores, as well as in some experimental rock music.
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How have advances in technology changed electronic organs over time?
The electronic organ, designed as a compact substitute for the pipe organ, has been significantly transformed by technological advancements.
Early electronic organs used electronic oscillators to generate sound, with the Hammond organ employing rotary, motor-driven generators to mimic various instrumental timbres.
The 1960s saw the replacement of vacuum tubes with transistors and solid-state circuitry. By the 1970s, digital microcircuitry facilitated the creation of computer organs, which used prerecorded sounds stored in computer memory. These sounds, sampled from conventional pipe organs, could be recreated via keys and stops. Further advancements introduced devices to control reverberation, pitch, and note attack or delay.
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electronic organ, keyboard musical instrument in which tone is generated by electronic circuits and radiated by loudspeaker. This instrument, which emerged in the early 20th century, was designed as an economical and compact substitute for the much larger and more complex pipe organ.
The electronic organ resembles a spinet, or upright, piano in size and general shape. Most instruments of this general type rely upon electronic oscillators (circuits carrying an alternating current at a specific frequency) to produce their sound. Each oscillator is capable of frequency variation for different pitches and is capable of reproducing a single melodic line. The instrument’s multiple oscillators make it capable of reproducing music having multiple parts, such as a fugue by Johann Sebastian Bach.
The 200-ton, keyboard-operated telharmonium, which used rotating electromagnetic tone-wheels to generate sound, was an important precursor to the electronic organ. Made in 1904 by the American inventor Thaddeus Cahill, it was exhibited in Massachusetts and New York in 1906 but lapsed into obscurity by World War I. The first successful electronic organ was developed in 1928 in France by Edouard Coupleux and Armand Givelet. It used electronic oscillators in place of the pipes of a conventional organ and was operated with keyboards and a pedal board. Another notable early electronic organ was the Rangertone (1931), invented by Richard H. Ranger of the United States. In 1934 the Orgatron was introduced by Frederick Albert Hoschke; in this organ, tone was generated by reeds that vibrated by electrically fan-blown air, with the vibrations picked up electrostatically and amplified.
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One of the most important and well known of the electronic organs is the Hammond organ, a sophisticated instrument having two manuals, or keyboards, and a set of pedals operated by the feet. It was patented by its American inventor Laurens Hammond in 1934. Unlike most other instruments of its type, it produces its sound through a complex set of rotary, motor-driven generators. By means of a series of controls affecting the harmonics, or component tones, of the sound, a great variety of timbres (tone colours) can be reproduced that to some degree imitate the sound of other instruments, such as the violin, the flute, the oboe, and the orchestral percussion instruments.
By the 1960s organ manufacturers had expanded their technology, supplanting vacuum tubes with transistors and solid-state circuitry. Circuits and components designed to operate television and radio receivers and high-fidelity phonographs were adapted to produce music. In the 1970s digital microcircuitry was used to operate a computer organ. In this device, sounds are not created internally but have been prerecorded (sampled) and stored in the computer from which they can later be retrieved. Musical tones or shapes—recorded from conventional windblown pipe organs—are coded into digital form and may be re-created by a special computer at the touch of the keys and stops. Other devices have been used to control reverberation, pitch, and the attack or delay of a note.