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musical instrument, any device for producing a musical sound. The principal types of such instruments, classified by the method of producing sound, are percussion, stringed, keyboard, wind, and electronic.
Musical instruments are almost universal components of human culture: archaeology has revealed pipes and whistles in the Paleolithic Period and clay drums and shell trumpets in the Neolithic Period. It has been firmly established that the ancient city cultures of Mesopotamia, the Mediterranean, India, East Asia, and the Americas all possessed diverse and well-developed assortments of musical instruments,
indicating that a long previous development must have existed. As to the origin of musical instruments, however, there can be only conjecture. Some scholars have speculated that the first instruments were derived from such utilitarian objects as cooking pots (drums) and hunting bows (musical bows); others have argued that instruments of music might well have preceded pots and bows; while in the myths of cultures throughout the world the origin of music has frequently been attributed to the gods, especially in areas where music seems to have been regarded as an essential component of the ritual believed necessary for spiritual survival.
Whatever their origin, the further development of the enormously varied instruments of the world has been dependent on the interplay of four factors: available material, technological skills, mythic and symbolic preoccupations, and patterns of trade and migration. Thus, residents of Arctic regions use bone, skin, and stone to construct instruments; residents of the tropics have wood, bamboo, and reed available; while societies with access to metals and the requisite technology are able to utilize symbolism play an equally important role. even when all the materials are available. Finally, patterns of human trade and migration have for many centuries swept musicians and their instruments across seas and continents, resulting in constant flux, change, and cross-fertilization and adaptation.
The sound produced by an instrument can be affected by many factors, including the material from which the instrument is made, its size and shape, and the way that it is played. For example, a stringed instrument may be struck, plucked, or bowed, each method producing a distinctive sound. A wooden instrument struck by a beater sounds markedly different from a metal instrument, even if the two instruments are otherwise identical. the pitch but also affects the timbre: the piccolo, being half the size of the flute, has a shriller sound. The shape of the tube determines the presence or absence of the “upper partials” (harmonic or nonharmonic overtones), which give colour to the single note. (For more on the science of sound, see acoustics.)
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