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Class of musical instruments
Struck idiophones is one of the categories of idiophones (that is, any musical instrument that creates sound primarily by the instrument as a whole vibrating—without the use of strings or membranes) that are found in the Hornbostel-Sachs system of musical instrument classification.
Struck idiophones are categorised as 11 in the Hornbostel-Sachs system. There are two main categories of struck idiophones, directly (111) and indirectly (112) struck.
"Struck Idiophones consist of one or several pieces made of a sonorous substance and struck with a stick or a similar device with rotary motion of the arm. Again, they are distinguished by their materials."
Directly struck (111)
Directly struck idiophones produce sound resulting from a direct action of the performer as opposed to the indirectly struck idiophones. The player strikes the instrument with a direct action, either by hand or by mechanical intermediate devices, beaters, keyboards, or by pulling ropes, etc. It is definitive that the player can apply clearly defined individual strokes and that the instrument itself is equipped for this kind of percussion.
There are two main categories of directly struck idiophones, concussion idiophones (111.1) and percussion idiophones (111.2).
IDIOPHONES STRUCK TOGETHER or concussion instruments. They are either two-handed, if each hand holds the other part (as with cymbals), or else one-handed (or clappers)....It should indicated, if possible, whether they are violently clashed together or gently brought together in order to cause a tinkling sound. Clappers must be described according to their materials...A combined type is cymbals on clappers.
consist of one or several pieces made of a sonorous substance and struck with a stick or a similar device with rotary motion of the arm. Again, they are distinguished by materials.
111.11 Concussion sticks or stick clappers (nearly equal thickness and width).
111.212 Sets of percussion sticks in a range of different pitches combined into one instrument. - All xylophones, as long as their sounding components are not in two different planes.
111.242.11 Sets of resting bells whose opening faces upward.
111.242.12 Sets of hanging bells suspended from the apex.
111.242.121 Sets of hanging bells without internal strikers.
111.242.122 Sets of hanging bells with internal strikers.
Indirectly struck (112)
Indirectly stuck idiophones produce sound resulting from an indirect action of the performer as opposed to the directly struck idiophones.[4] The player himself does not go through the movement of striking; percussion results indirectly through some other movement by the player. This category is divided in two main sub-categories: shaken idiophones and scraped idiophones.[5]
The player causes a scraping movement directly or indirectly; a non-sonorous object moves along the notched surface of a sonorous object, to be alternately lifted off the teeth and flicked against them; or an elastic sonorous object moves along the surface of a notched non-sonorous object to cause a series of impacts. This group must not be confused with that of friction idiophones.
112.3 Split idiophones - Instruments in the shape of two springy arms connected at one end and touching at the other: the arms are forced apart by a little stick, to jingle or vibrate on recoil.
References
^Sachs, Curt (1940). The History of Musical Instruments, p.456. W. W. Nortan & Company, Inc. ISBN0-393-02068-1
^Sachs, Curt (1940). The History of Musical Instruments, p.455. W. W. Nortan & Company, Inc. ISBN0-393-02068-1
^Sachs, Curt (1940). The History of Musical Instruments, p.455. W. W. Nortan & Company, Inc. ISBN0-393-02068-1