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METRONOME (Gr. Orpov, measure, and vo...

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Originally appearing in Volume V18, Page 300 of the 1911 Encyclopedia Britannica.
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METRONOME (Gr. Orpov, measure, and voµos, See also:law)  , an See also:instrument for denoting the See also:speed at which a musical See also:composition is to be performed . Its invention is generally, but falsely, ascribed to Johann See also:Nepomuk Maelzel, a native of Ratisbon (1772-1838) . It consists of a pendulum swung on a See also:pivot; below the pivot is a fixed See also:weight, and above it is a sliding weight that regulates the velocity of the oscillations by the greater or less distance from the pivot to which it is adjusted . The silent See also:metronome is impelled by the See also:touch, and ceases to See also:beat when this impulse See also:dies; it has a See also:scale of See also:numbers marked on the pendulum, and the upper See also:part of the sliding weight is placed under that number which is to indicate the quickness of a stated See also:note, as M.M . (Maelzel's Metronome) (ss= or r= 72, or := ro8, or the like . The number 6o implies a second of See also:time for each singleoscillation of the pendulum—numbers See also:lower than this denoting slower, and higher numbers quicker beats . The scale at first extended from 50 to 16o, but now ranges from 40 to 208 . A more complicated metronome is impelled by See also:clock-See also:work, makes a See also:ticking See also:sound at each beat, and continues its See also:action till the See also:works run down; a still more intricate See also:machine has also a See also:bell which is struck at the first of any number of beats willed by the See also:person who regulates it, and so signifies the See also:accent as well as the time . The earliest instrument of the See also:kind, a weighted pendulum of variable length, is described in a See also:paper by See also:Etienne Louli6 (See also:Paris, 1696; See also:Amsterdam, 1698) . Attempts were also made by Enbrayg (1732) and Gabory (1771) . See also:Harrison, who gained the See also:prize awarded by the See also:English See also:government for his chronometer, published a description of an instrument for the purpose in 1775 . Davaux (1784), Pelletier, See also:Abel Burja (1790) and Weiske (also 1i90) described their various experiments for measuring musical time .

In 1813 Gottfried See also:

Weber, the composer, theorist and essayist, proposed a weighted ribbon graduated by inches or smaller divisions, which might be held or otherwise fixed at any desired length, and would infallibly oscillate at the same speed so See also:long as the impulse lasted . Stockel and Zmeskall produced each an instrument; and Maelzel made some slight modification of that by the former, about the end of 1812, which he announced as a new invention of his own, and exhibited from See also:city to city on the See also:Continent . It was, as nearly as can be ascertained, in 1812 that Winkel, a mechanician of Amsterdam, devised a See also:plan for reducing the inconvenient length of all existing See also:instruments, on the principle of the See also:double pendulum, rocking on both sides of a centre and balanced by a fixed and a variable weight . He spent three years in completing it, and it is described and commended in the See also:Report of the See also:Netherlands See also:Academy of Sciences (Aug . 14, 1815) . Maelzel thereupon went to Amsterdam, saw Winkel and inspected his invention, and, recognizing its See also:great superiority to what he called his own, offered to buy all right and See also:title to it . Winkel refused, and so Maelzel constructed a copy of the instrument, to which he added nothing but the scale of numbers, took this copy to Paris, obtained a patent for it, and in 1816 established there, in his own name, a manufactory for metronomes . When the impostor revisited Amsterdam, the inventor instituted proceedings against him for his piracy, and the Academy of Sciences decided in Winkel's favour, declaring that the graduated scale was the only point in which the instrument of Maelzel differed from his . Maelzel's scale was needlessly and arbitrarily complicated, proceeding by twos from 40 to 6o, by threes from 6o to 72, by fours from 72 to 120, by sixes from 120 to 144 and by eights from 144 to 208 . Dr See also:Crotch constructed a time measurer, and See also:Henry See also:Smart (the violinist, See also:father of the composer of the same name) made another in 1821, both before that received as Maelzel's was known in See also:England . In 1882 See also:James See also:Mitchell, a Scotsman, made an ingenious amplification of the Maelzel clock-work, reducing to See also:mechanical demonstration what formerly rested wholly on the feeling of the performer . Although " Maelzel's metronome " has universal See also:acceptance, the silent metronome and still more Weber's graduated ribbon are greatly to be preferred, for the clock-work of the other is liable to be out of See also:order, and needs a nicety of regulation which is almost impossible; for instance, when See also:Sir See also:George Smart had to See also:mark the traditional times of the several pieces in the See also:Dettingen Te Deum, he tested them by twelve metronomes, no two of which beat together .

The value of the machine is exaggerated, for no living performer could execute a piece in unvaried time throughout, and no student could practise under the tyranny of its beat; and conductors of See also:

music, See also:nay, composers themselves, will conduct the same piece slightly slower or quicker on different occasions, according to the circumstances of performance .

End of Article: METRONOME (Gr. Orpov, measure, and voµos, law)
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