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Electronic Organ
An electric organ, also known as electronic organ, is an electronic keyboard instrument which was derived from the harmonium, pipe organ and theatre organ. Originally designed to imitate their sound, or orchestral sounds, it has since developed into several types of instruments: * Hammond-style organs used in pop, rock and jazz; * digital church organs, which imitate pipe organs and are used primarily in churches; * other types including combo organs, home organs, and software organs. History Predecessors ;Harmonium The immediate predecessor of the electronic organ was the harmonium, or reed organ, an instrument that was common in homes and small churches in the late 19th and early 20th centuries. In a fashion not totally unlike that of pipe organs, reed organs generate sound by forcing air over a set of reeds by means of a bellows, usually operated by constantly pumping a set of pedals. While reed organs have limited tonal quality, they are small, inexpensive, self ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Keyboard
An electronic keyboard, portable keyboard, or digital keyboard is an electronic musical instrument, an electronic derivative of keyboard instruments. Electronic keyboards include synthesizers, digital pianos, stage pianos, electronic organs and digital audio workstations. In technical terms, an electronic keyboard is a synthesizer with a low-wattage power amplifier and small loudspeakers. Electronic keyboards are capable of recreating a wide range of instrument sounds (piano, Hammond organ, pipe organ, violin, etc.) and synthesizer tones with less complex sound synthesis. Electronic keyboards are usually designed for home users, beginners and other non-professional users. They typically have unweighted keys. The least expensive models do not have velocity-sensitive keys, but mid- to high-priced models do. Home keyboards typically have little, if any, digital sound editing capacity. The user typically selects from a range of preset "voices" or sounds, which include imitations ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
967 At Asbury
Year 967 ( CMLXVII) was a common year starting on Tuesday (link will display the full calendar) of the Julian calendar. Events By place Europe * Spring – Emperor Otto I (the Great) calls for a council at Rome, to present the new government under Pope John XIII. He asserts his rights in the city, and insists on the occasional presence of an imperial judge, alongside the papal court. The era of Roman independence is over. Grado becomes the patriarchal and metropolitan church of the whole of the Veneto. * Otto I goes on a tour of the Lombard duchies of southern Italy. In Capua he grants Pandulf I (Ironhead) the vacant Duchy of Spoleto and Camerino and charges him with prosecuting the war against the Byzantine Empire. In Benevento, Otto receives the homage of Pandulf's brother and co-ruler Landulf III. In Salerno he receives also the support of Gisulf I. * Otto I dispatches an imperial delegation (led by a Venetian named Domenico) to Constantinople with assuran ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hammond Organ
The Hammond organ is an electric organ invented by Laurens Hammond and John M. Hanert and first manufactured in 1935. Multiple models have been produced, most of which use sliding drawbars to vary sounds. Until 1975, Hammond organs generated sound by creating an electric current from rotating a metal tonewheel near an electromagnetic pickup, and then strengthening the signal with an amplifier to drive a speaker cabinet. The organ is commonly used with the Leslie speaker. Around two million Hammond organs have been manufactured. The organ was originally marketed by the Hammond Organ Company to churches as a lower-cost alternative to the wind-driven pipe organ, or instead of a piano. It quickly became popular with professional jazz musicians in organ trios—small groups centered on the Hammond organ. Jazz club owners found that organ trios were cheaper than hiring a big band. Jimmy Smith's use of the Hammond B-3, with its additional harmonic percussion feature, inspired a g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Montréal
Montreal ( ; officially Montréal, ) is the second-most populous city in Canada and most populous city in the Canadian province of Quebec. Founded in 1642 as '' Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple-peaked hill around which the early city of Ville-Marie is built. The city is centred on the Island of Montreal, which obtained its name from the same origin as the city, and a few much smaller peripheral islands, the largest of which is Île Bizard. The city is east of the national capital Ottawa, and southwest of the provincial capital, Quebec City. As of 2021, the city had a population of 1,762,949, and a metropolitan population of 4,291,732, making it the second-largest city, and second-largest metropolitan area in Canada. French is the city's official language. In 2021, it was spoken at home by 59.1% of the population and 69.2% in the Montreal Census Metropolitan Area. Overall, 85.7% of the population of the city of Montreal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robb Wave Organ
The Robb Wave Organ is an electronic organ invented in 1927 by Canadian inventor F. Morse Robb in Belleville, Ontario. It uses a unique type of tone wheel synthesis to reproduce pipe organ tones and is one of the first electronic organs ever made. While not as commercially successful as its main competitor, the Hammond organ, The Robb Wave Organ predates the Hammond (and other competitors such as Conn and the Baldwin) in conception, patents, and manufacture and release for public sale.Brown, J. J. "Ideas in Exile". Toronto, McClelland and Stewart Limited, 1967. pp. 236-345. History Frank Morse Robb began researching and developing an electronic organ. He started with the theory that the best way to duplicate an organ tone was to start with a recording of the waveform and then find some way to recreate it electrically. Achieving this, he demonstrated a small instrument in Belleville on November 4, 1927. The instrument consisted of 8 notes, each of a different tone quality. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tonewheel
A tonewheel or tone wheel is a simple electromechanical apparatus used for generating electric musical notes in electromechanical organ instruments such as the Hammond Organ and in telephony to generate audible signals such as Ringing tone. It was developed by Thaddeus Cahill for the telharmonium c. 1896 and patented in 1897. It was reinvented around 1910 by Rudolph Goldschmidt for use in pre–vacuum-tube radio receivers as a beat frequency oscillator (BFO) to make continuous wave radiotelegraphy (Morse code) signals audible. Description The tonewheel assembly consists of a synchronous AC motor and an associated gearbox that drives a series of rotating disks. Each disk has a given number of smooth bumps at the rim; these generate a specific frequency as the disk rotates close to a pickup assembly that consists of a magnet and electromagnetic coil. As each bump in the wheel approaches the pickup, it temporarily concentrates the magnetic field near it, and thus strengthens th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Welte-Mignon
M. Welte & Sons, Freiburg and New York was a manufacturer of orchestrions, organs and reproducing pianos, established in Vöhrenbach by Michael Welte (1807–1880) in 1832. Overview From 1832 until 1932, the firm produced mechanical musical instruments of the highest quality. The firm's founder, Michael Welte (1807-1880), and his company were prominent in the technical development and construction of orchestrions from 1850, until the early 20th century. In 1872, the firm moved from the remote Black Forest town of Vöhrenbach into a newly developed business complex beneath the main railway station in Freiburg, Germany. They created an epoch-making development when they substituted the playing gear of their instruments from fragile wood pinned cylinders to perforated paper rolls. In 1883, Emil Welte (1841-1923), the eldest son of Michael, who had emigrated to the United States in 1865, patented the paper roll method (), the model of the later piano roll. In 1889, the tec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laurens Hammond
Laurens Hammond (January 11, 1895 – July 1, 1973), was an American engineer and inventor. His inventions include the Hammond organ, the Hammond clock, and the world's first polyphonic musical synthesizer, the Novachord. Youth Laurens Hammond was born in Evanston, Illinois, on January 11, 1895 to William Andrew and Idea Louise Strong Hammond. Laurens showed his great technical prowess from an early age. His father, William, took his own life in January 1897, ostensibly due to failure of the First National Bank of Illinois, which he had founded. Upon her husband's death, Idea, who was an artist, relocated to France with Laurens to further her studies, and the family spent the next eleven years in France and Germany. Early inventions When the family returned to Evanston in 1909, Laurens, then 14, was fluent in French and German. While in Europe, he had already designed a system for automatic transmission for automobiles. At his mother's suggestion, he submitted his des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waveforms
In electronics, acoustics, and related fields, the waveform of a signal is the shape of its graph as a function of time, independent of its time and magnitude scales and of any displacement in time.David Crecraft, David Gorham, ''Electronics'', 2nd ed., , CRC Press, 2002, p. 62 In electronics, the term is usually applied to periodically varying voltages, currents, or electromagnetic fields. In acoustics, it is usually applied to steady periodic sounds—variations of pressure in air or other media. In these cases, the waveform is an attribute that is independent of the frequency, amplitude, or phase shift of the signal. The term can also be used for non-periodic signals, like chirps and pulses. The waveform of an electrical signal can be visualized in an oscilloscope or any other device that can capture and plot its value at various times, with a suitable scales in the time and value axes. The electrocardiograph is a medical device to record the waveform of the electr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronics
The field of electronics is a branch of physics and electrical engineering that deals with the emission, behaviour and effects of electrons using electronic devices. Electronics uses active devices to control electron flow by amplification and rectification, which distinguishes it from classical electrical engineering, which only uses passive effects such as resistance, capacitance and inductance to control electric current flow. Electronics has hugely influenced the development of modern society. The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The largest industry sector is e-commerce, which generated over $29 trillion in 2017. History and development Electronics has hugely influenced the development of modern society. The identification of the electron in 1897, along with the subsequent invention of the vacuum tube which could amplify and rectify small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telharmonium
The Telharmonium (also known as the Dynamophone) was an early electrical organ, developed by Thaddeus Cahill c. 1896 and patented in 1897. , filed 1896-02-04. The electrical signal from the Telharmonium was transmitted over wires; it was heard on the receiving end by means of "horn" speakers. An authoritative history of the Telharmonium. Weidenaar produced a 29-minute documentary video, also called (Sewebsitefor extensive additional documentation) Like the later Hammond organ, the Telharmonium used tonewheels to generate musical sounds as electrical signals by additive synthesis. It is considered to be the first electromechanical musical instrument. History Cahill built three versions: The Mark I version weighed 7 tons. The Mark II version weighed almost 210 tons, as did the Mark III. Each was a considerable advancement over the features of its predecessor. A small number of performances in front of a live audience were given in addition to the telephone transmissions. Pe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thaddeus Cahill
Thaddeus Cahill (June 18, 1867 – April 12, 1934) was a prominent inventor of the early 20th century. He is widely credited with the invention of the first electromechanical musical instrument, which he dubbed the telharmonium. He studied the physics of music at Oberlin Conservatory in Oberlin, Ohio. After working as a clerk for Congress in Washington D.C. to pay for his college studies, he graduated from the Columbian (now George Washington University) Law School in 1889. He became convinced that music could be made with electricity (and also worked on an electric typewriter). He showed his first teleharmonium to Lord Kelvin in 1902. That year he established a laboratory at Holyoke, where he was joined by his brother, Arthur T. Cahill, and where the two would first demonstrate the teleharmonium to a public audience. Cahill had tremendous ambitions for his invention; he wanted telharmonium music to be broadcast into hotels, restaurants, theaters, and even houses via the telep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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