Editing Wind chime

{{Short description|Percussion instrument constructed by rods, bells, tubes suspended in air}}
{{Redirect|Wind Chimes|the Beach Boys song|Wind Chimes (song)}}
[[Image:Wchime.jpg|right|thumb|A metal wind chime]]
'''Wind chimes''' are a type of [[percussion instrument]] constructed from suspended [[Cylinder (geometry)|tubes]], rods, [[Bell (instrument)|bell]]s, or other objects that are often made of metal or wood. The tubes or rods are suspended along with some type of weight or surface which the tubes or rods can strike when they or another [[windcatcher|wind-catching]] surface are blown by the [[wind|natural movement of air]] outside. 

They are usually hung outside of a building or residence as a visual and aural [[garden ornament]]. Since the percussion instruments are struck according to the random effects of the wind blowing the chimes, wind chimes have been considered an example of [[aleatoric music|chance-based music]]. The tubes or rods may sound either indistinct pitches, or fairly distinct pitches. Wind chimes that sound fairly distinct pitches can, through the chance movement of air, create simple songs or [[broken chord]]s.
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== History ==
=== Ancient Rome ===
[[File:Roman wind chime (tintinabulum) flying phallus with bells.jpg|thumb|right|150px|Bronze tintinnabulum, Roman, 1st century AD, [[British Museum]].]]
[[Ancient Rome|Ancient Roman]] wind chimes, usually made of [[bronze]], were called ''[[Tintinnabulum (Ancient Rome)|tintinnabula]]'' and were hung in [[Roman gardens|gardens]], [[courtyards]], and [[portico]]es where wind movement caused them to tinkle. Bells were believed to ward off malevolent spirits and were often combined with a [[phallus]], which was also a symbol of good fortune and a [[Amulet|charm]] against the [[evil eye]].<ref>{{cite book |author=Catherine Johns | year=1982 |title=Sex or Symbol?: Erotic Images of Greece and Rome | url=https://books.google.com/books?isbn=0415925673 | publisher=Taylor & Francis | pages=66–68}}</ref> The image shows one example with a phallus portrayed with wings and the feet of an animal, and a phallus for a tail. These additions increased its protective powers.<ref>{{cite web | title=Bronze phallic wind chime (''tintinabulum'') | url=https://www.britishmuseum.org/explore/highlights/highlight_objects/gr/b/bronze_phallic_wind_chime.aspx | publisher=British Museum}}</ref>

=== Eastern and Southern Asia ===
[[File:Wind-powered bell under temple eaves,. Banna-ji. Ashikaga, Tochigi.jpg|thumb|Wind-powered bell or wind chime under temple eaves,. Banna-ji. [[Ashikaga, Tochigi]]. Japan]]
In [[India]] during the second century CE, and later in [[China]], extremely large [[pagoda]]s became popular with small wind bells hung at each corner; the slightest breeze caused the clapper, which was also made of bronze, to swing, producing a melodious tinkling. It is said that these bells were originally intended to frighten away not only birds but also any lurking evil spirits. Wind bells are also hung under the corners of temple, palace and home roofs; they are not limited to pagodas.<ref name=batm>
{{cite book
 | last = Westcott
 | first = Wendell
 | author-link = Wendell Westcott
 | title = Bells and Their Music
 | publisher = [[G.P. Putnam]]
 | year = 1970
 | lccn = 76077762
 | chapter = Chapter 1: Bells of the Orient
 | url = https://www.msu.edu/~carillon/batmbook/chapter1.htm }}
</ref> [[Japan]]ese glass wind bells known as ''[[fūrin]]'' (風鈴) have been produced since the [[Edo period]],<ref name="nikkei">
{{cite news|last = Amano|first = Kenichi|author2=Kawakami, Takashi |title = Foreign tourists find real Tokyo|newspaper = The Nikkei Weekly| date = May 28, 2007}}</ref> and those at [[Mizusawa Station]] are one of the [[100 Soundscapes of Japan]]. Wind chimes are thought to be good luck in parts of Asia and are used in [[Feng Shui]].

Wind chimes started to become modernized around 1100 C.E. after the Chinese began to use [[metal casting]] to create bells. A bell without a clapper, called a ''yong-zhong'', was crafted by skilled metal artisans and primarily used in religious ceremonies. Afterwards, the Chinese created the ''feng-ling'' ({{lang|ja|[[wiktionary:風鈴|風鈴]]}}), which is similar to today's modern wind bell. Feng-lings were hung from shrines and pagodas to ward off evil spirits and attract benevolent ones. Today, wind chimes are common in the East and used to maximize the flow of [[Qi|chi]], or life's energy.

== Sounds and music ==
[[File:Windglockenspiel.Koshi.jpg|thumb|left|150px|Wind chime with the audible tones a1-d2-f2-g2-a2-d3-f3-a3. The bamboo cylinder is not only the case of the instrument, but at the same time it is the resonator. The eight tones are produced by eight metal rods within the cylinder which are centrally struck by a disk attached to the cord with the wind sail.  
[[File:Windglockenspiel.Koshi.ogg]]
]]
Chimes produce [[inharmonic]] (as opposed to [[harmonic]]) [[Harmonic spectrum|spectra]], although if they are hung at about 2/9 of their length<ref>[[William Sethares|Sethares, William A.]] (2005). ''Tuning, Timbre, Spectrum, Scale'', p.115. {{ISBN|9781846281136}}.</ref> (22.4%<ref name=mtu>{{cite web|url=http://www.phy.mtu.edu/~suits/windchime.html|title=Physics of Music: Make your own wind chimes|date=2009-01-08|work=Michigan Tech|access-date=2009-01-08|archive-date=2017-07-03|archive-url=https://web.archive.org/web/20170703185930/http://www.phy.mtu.edu/~suits/windchime.html|url-status=dead}}</ref><ref name=formula>{{cite web|url=http://milwaukeemakerspace.org/2011/09/giant-ominous-wind-chimes/|title=Giant, Ominous Wind Chimes|date=2011-09-29|work=Milwaukee Makerspace}}</ref>), some of the higher partials are damped and the [[fundamental frequency|fundamental]] rings the loudest.<ref name="formula"/> This is common practice in high-quality wind chimes, which are also usually hung so the centre ball strikes the centre of the wind chime's length, also resulting in the loudest sounding fundamental.<ref name="formula"/> Frequency is determined by the length, width, thickness, and material. There are formulas<ref name="formula"/> that help predict the proper length to achieve a particular note, though a bit of fine tuning is often needed.

Most chimes employ [[pentatonic scale|pentatonic]] or [[tetratonic scale]]s as the basis for the pitches of their individual chimes as opposed to the traditional western [[heptatonic scale]]. This is largely due to the fact that these scales inherently contain fewer dissonant [[interval (music)|intervals]], and therefore sound more pleasant to the average listener when notes are struck at random.

In instruments such as [[organ pipe]]s, the pitch is determined primarily by the length of the air column, because it is the resonance of the air column that generates the sound. The pipe material helps determine the "[[timbre]]" or "voice" of the pipe, but the air column determines the pitch. In a wind chime, the vibrations of the pipe itself radiate the sound after being struck, so the air column has little to do with the pitch being produced.

Sound can be produced when the tubes or rods come in contact with a suspended central [[Bell (instrument)|clapper]] in the form of a ball or horizontal disk, or with each other.

Wind chimes may be used to observe changes in wind direction, depending on where they are hung when they commence to sound.

== Materials ==
[[image:Chime closeup.jpg|thumb|right|175px|A close-up of metal rods on a wind chime]]
{{Listen
| filename     = Windchimes.ogg
| title        = Wind chimes
| description  = A recording of wind chimes.
| format       = [[Ogg]]
}}
Wind chimes can be made of materials other than metal or wood and in shapes other than tubes or rods. Other wind chimes materials include glass, bamboo, shell, stone, earthenware, stoneware, beads, keys and porcelain.<ref name="vt">{{cite web|url=http://www.music.vt.edu/musicdictionary/textw/Windchimes.html|title=Wind chimes|date=2009-01-08|work=Virginia Tech Multimedia Music Dictionary|publisher=Virginia Tech}}</ref> More exotic items, such as silverware or cookie cutters, can also be recycled (or [[Upcycling|upcycled]]) to create wind chimes.<ref name="toronto">{{cite news
 | last = MacKenzie
 | first = Peggy
 | title = Crafted silver chimes hit right note; Retooled cutlery the meat and potatoes of woman's successful small business
 | pages = H05
 | newspaper = The Toronto Star
 | date = August 25, 2007}}
</ref> The selected material can have a large effect on the sound a wind chime produces. The sounds produced by recycled objects such as these are not as easily tunable to specific notes and range from pleasant tinkling to dull thuds. The sounds produced by properly sized wind chime tubes are tunable to notes.<ref name="formula"/> As [[Aluminium|aluminum]] is the common metal with the lowest internal [[damping]], wind chimes are often made from aluminum to achieve the longest and loudest sounding chime.

The tone depends on factors such as the material used, the exact alloy, heat treatment, and whether a solid cylinder or a tube is used. If a tube is used, the wall thickness also affects the tone. Tone may also depend on the hanging method. The tone quality also depends on the material of the object that is used to hit the chimes.

With clay wind chimes, the higher the final firing temperature, the brighter and more ringing the resulting tone. [[Earthenware]] clay fired at lower temperatures produces a duller sound than [[stoneware]] clay fired at higher temperatures. Stoneware wind chimes are also more durable and able to resist stronger winds without suffering chipping or damage.

== Mathematics of tubular wind chimes ==
[[File:Free-Free Euler-Bernoulli Beam animation.gif|thumb|The mode 1 (lowest frequency) vibration of a free Euler–Bernoulli beam of length 1]]

A wind chime constructed of a circular tube may be modelled as a freely vibrating [[Euler–Bernoulli beam theory#Example: free–free (unsupported) beam|Euler–Bernoulli beam]]<ref name="Hite">{{cite web |url=http://leehite.org/Chimes.htm |title=Say it with Chimes |last1=Hite |first1=Lee  |access-date=2016-08-01}}</ref> and the dominant frequency in cycles per second is given by:

:<math>
\nu_1 = \frac{\beta_1^2}{2\pi} \sqrt{\frac{EI}{\mu}} = \frac{22.3733}{2 \pi L^2}\sqrt{\frac{EI}{\mu}}
</math>

where ''L'' is the length of the tube, ''E'' is the [[Young's modulus]] for the tube material, ''I'' is the [[second moment of area]] of the tube, and &mu; is the mass per unit length of the tube. Young's modulus ''E'' is a constant for a given material. If the inner radius of the tube is ''r<sub>i</sub>'' and the outer radius is ''r<sub>o</sub>'', then the second moment of area for an axis perpendicular to the axis of the tube is:

:<math>
I=\frac{\pi}{4}(r_o^4-r_i^4)
</math>

The mass per unit length is:

:<math>
\mu=\pi \rho (r_o^2-r_i^2)
</math>

where &rho; is the density of the tube material. The frequency is then

:<math>
\nu_1=\frac{22.3733}{4\pi L^2}\sqrt{\frac{E}{2 \rho} }\,\sqrt{D^2+W^2}
</math>

where ''W=r<sub>o</sub>-r<sub>i</sub>'' is the wall thickness and ''D'' is the average diameter ''D=r<sub>o</sub>+r<sub>i</sub>''.
For sufficiently thin-walled tubes the ''W<sup>2</sup>'' term may be neglected, and for a given material, the main frequency is inversely proportional to ''L''<sup>2</sup> and proportional to the diameter ''D''.

For the main mode of vibration, there will be two nodes on the tube, where the tube is motionless during the vibration. These nodes will be located at a distance of 22.416% of the length of the tube from each end of the tube. If the tube is simply supported (not clamped) at one or both of these nodes, the tube will vibrate as if these supports did not exist. A wind chime will give the clearest and loudest tone when it is hung using one of these node points as the attachment point. These attachment points are also the same as used by other similar instruments such as the [[xylophone]] and [[glockenspiel]].

== Use in music ==
[[image:Sitek wind chimes.jpg|thumb|150px|[[Dave Sitek|David Sitek]] with a wind chime suspended from his guitar]]
Different types of wind chimes have also been used in modern music and are listed as a percussion instrument. The following is a brief list of artists and composers who have used them:
* [[Olivier Messiaen]]: ''[[Saint-François d'Assise]]'' (one set of glass, shell and wood chimes)
* [[Toshiro Mayuzumi]]: ''[[Bugaku (ballet)|Bugaku]]'' (one set of wood and glass chimes)
* [[Giles Swayne]] Symphony No. 1 (one set of glass chimes)
* [[David Sitek]], of American rock band [[TV on the Radio]], sometimes hangs a wind chime from the end of his guitar to add texture to his music.<ref name="globe">{{cite news | last = Anderman | first = Joan | title = Connecting with TV on the Radio | pages = B07 | newspaper = The Boston Globe | date = October 15, 2008 | url = http://www.boston.com/lifestyle/food/articles/2008/10/15/connecting_with_tv_on_the_radio/}}</ref>
* [[Koji Kondo]], head composer for the Mario series of video games. A prime example is the theme music for the world "Vanilla Dome" in ''[[Super Mario World]]''.
* [[Ivy Queen]], on the [[acoustic music|acoustic track]] "Ángel Caído" from the 2004 album ''[[Real (Ivy Queen album)|Real]]''.

== Influence ==
* The Japanese video game franchise ''[[Pokémon]]'' used the Japanese ''fūrin'' wind chimes as the basis for the Pokémon [[List of Pokémon (320–386)#Chimecho|Chimecho]]. Its in-game cry reflects this, as it sounds like three high-pitched bells chiming one after the other.
* [[Mark tree]]s are often mistakenly called wind chimes, but they are different instruments, though with a basic similar structure consisting of tubes of differing lengths that are meant to produce a tinkling or chiming sound.{{Citation needed|date=July 2018}}

== Gallery ==
<gallery>
File:Wind chimes at Leisure Valley, Chandigarh.jpg|alt=Wind chimes at Leisure Valley, Chandigarh|Wind chimes at [[Leisure Valley, Chandigarh]]
Image:Fuurin.jpg|A Japanese ''Fūrin'' wind chime
Image:windchimes.jpg|A set of small wind chimes
Image:Wind-chime-M7547.jpg|Wind chimes in [[Nagano (city)|Nagano]], Japan
Image:Unintended use.jpg|Old [[hard disk platter]]s used as a wind chime
Image:Wind chime hole.png|Quality chimes are hung at ≈2/9 and struck at 1/2 length.
File:Enchanting Nepal.jpg|Mate Ghanta bells from [[Nepal]]
File:Patan Durbar Square (66).JPG|Phye Ghan	(Nepali: फ्ये गँ:)
</gallery>

== See also ==
* [[Dreamcatcher]]
* [[Mobile (sculpture)]]
* [[Suncatcher]]
* [[World's Largest Tuned Musical Windchime]]
* [[World's largest windchime]]

== References ==
{{Reflist}}

== External links ==
{{Commons category|Wind chimes}}
* [http://milwaukeemakerspace.org/2011/09/giant-ominous-wind-chimes/ How To Design Your Own Wind Chimes]
* [http://mynoise.net/NoiseMachines/windchimesGenerator.php Wind Chimes Sound Generator (Online)]

{{Percussion}}
{{Sound sculptures}}
{{Lawn and garden ornaments}}
{{Authority control}}

{{DEFAULTSORT:Wind Chime}}
[[Category:Amulets]]
[[Category:Asian percussion instruments]]
[[Category:European percussion instruments]]
[[Category:Garden ornaments]]
[[Category:Objects believed to protect from evil]]
[[Category:Outdoor sculptures]]
[[Category:Percussion idiophones]]
[[Category:Talismans]]
[[Category:Wind-activated musical instruments]]