A numeric code, similar to the class marks of the Dewey decimal library classification system, indicates the structure and physical function of the instrument. Each category is further subdivided according to the more detailed characteristics of an instrument.
The latter group includes those instruments where sound is produced by directing a stream of air against an edge (flutes and duct flutes), by the vibration of a reed, or by the vibration of the player’s lips. the bullroarer), in which vibrations are set up in a body of air unconfined by the structure of the instrument, and wind instruments where the air is enclosed inside a tube or vessel. Various scholars, including Galpin ( Textbook of European Instruments, London, 1937) and Sachs ( History of Musical Instruments, New York, 1940), have suggested adding electrophones to the system, but it has not yet been formally extended.Īerophones are subdivided into ‘free aerophones’ (e.g. Their system, which draws on that devised by Victor-Charles Mahillon for the Royal Conservatory in Brussels and is widely used today, divides instruments into groups which employ air, strings, membranes or sonorous materials to produce sounds. Sachs and published by them in Zeitschrift für Ethnologie in 1914 (Eng. Aerophones form one of the original four classes of instruments (along with idiophones, membranophones and chordophones) in the hierarchical classification devised by E.M. General term for musical instruments that produce their sound by setting up vibrations in a body of air. Accordions are related historically, organologically and technologically to the Reed organ, specifically the table harmonium, and the harmonica (. The casework around the keyboards and covering the reedplates is usually of a style and decoration that has become associated with the type of accordion and is sometimes identifiable with its company of origin. Straps hold the instrument in the hands or on the shoulders.
An air-button or -bar on the left-hand end, operated by the thumb or palm, is used to fill and empty the bellows without sounding a note. The keyboards are connected by folded bellows which induce air to flow through the reedplates these move horizontally and are controlled by arm-pressures that in turn regulate the loudness of the sound emitted. Their common features include a mechanical keyboard under each hand, manipulated by the fingers to select pitches.
Accordion straps portable#
bayan, garmonica, garmoschka)Ī term applied to a number of portable free-reed aerophones. Akkordeon, Handharmonika, Klavier-Harmonika, Ziehharmonika It.
Membranophones (Stretched Membrane Percussion) Music Business, Institutions and Organizations
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