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There are several overlapping schemes for the classification of percussion instruments. These schemes are based on four types of criteria: * The means by which the sound is produced. The most widely used classification system for musical instruments, Hornbostel–Sachs, takes this approach. * Musical usage, in particular the traditional division into tuned percussion and untuned percussion, and the similar and more modern division into pitched percussion and unpitched percussion. * The means of playing the instrument and skills required to play it, for example the grouping together of mallet percussion instruments, or of hand percussion instruments. This underlies the division of the orchestral percussion section into auxiliary percussion, tuned percussion and timpani, and is the reason percussive keyboard instruments such as the celesta are excluded from the percussion section. * Origins, cultural significance or tradition, for example grouping instruments as Latin percussion or as African drums. This criterion overlaps but is not a subset of the usage criterion; Both ''Latin percussion'' and ''African drums'' also refer to some extent to current usage. Percussion instruments vary enormously in nature and usage, and have possibly the longest history of any group of musical instruments.〔The Oxford Companion to Music, 10th edition, p775〕 For these and other reasons their classification proves difficult, and different classification systems are used in different contexts. At the highest level of grouping, authorities differ over whether stringed instruments such as the hammered dulcimer and keyboard instruments such as the celesta are percussion instruments, let alone the piano which is both stringed and a keyboard and yet sometimes also termed ''percussion''.〔http://pianoeducation.org/pnopnfaq.html retrieved 22 March 2012 ''The piano is really a "hybrid"--a combination of two types. It's a string instrument because the musical tones originate in the strings; and it's also a percussion instrument, because the strings are set into vibration by being struck with hammers. To be historically correct, it's classified as a "keyed zither" by musicologists.''〕〔http://playpianotips.com/blog/is-the-piano-a-percussion-instrument/ retrieved 22 March 2012: ''How you class the piano depends on which of the following classification schemes you feel is most relevant: (1) By how the sound is produced. By one thing striking another (percussion), by plucking or bowing (strings), or by vibrating a column of air (wind). (2) By construction. If you can’t make the sound without the strings, then call it a stringed instrument. (3) By method of playing. If you use a keyboard, it’s a keyboard instrument; if you hit it with a stick, it’s a percussion instrument. Traditionally, the first classification scheme has held sway. Number 2 is not widely accepted. But Number 3 is gaining ground. For now, most musicologists would agree, the piano is a percussion instrument, and also a keyboard instrument.''〕 Hornbostel–Sachs does not use the term ''percussion'' as a general grouping at all, but instead in a very different sense to the common usage. Instruments such as castanets and cymbals used in pairs are not ''percussion'' in the Hornbostel–Sachs sense, but are percussion instruments in every other sense. Similar problems are encountered at lower levels of classification. ==By means of sound production== Ancient Chinese and Indian systems of classification were based on the materials of which the instruments were constructed, and the acoustic properties of the instruments, respectively.〔 In the 14th century Jean de Muris produced a classification system which divided all musical instruments into three classes: Percussion, String and Wind.〔http://en.citizendium.org/wiki/musical_instrument#Classification_of_musical_instruments retrieved 24 March 2012〕 Hornbostel–Sachs further develops this scheme, but abandons the ''percussion'' high-level grouping, replacing it by the groups ''idiophones'' and ''membranophones''. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「classification of percussion instruments」の詳細全文を読む スポンサード リンク
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