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98-472: The didgeridoo ( / ˌ d ɪ dʒ ər i ˈ d uː / ), also spelt didjeridu , among other variants, is a wind instrument , played with vibrating lips to produce a continuous drone while using a special breathing technique called circular breathing . The didgeridoo was developed by Aboriginal peoples of northern Australia at least 1,000 years ago, and is now in use around the world, though still most strongly associated with Indigenous Australian music . In

196-500: A New Age style of music with liner notes promoting the instrument's spirituality which misleads consumers about the didgeridoo's secular role in traditional Aboriginal culture. The taboo is particularly strong among many Aboriginal groups in the South East of Australia, where it is forbidden and considered "cultural theft" for non-Aboriginal women, and especially performers of New Age music regardless of sex, to play or even touch

294-588: A 1908 edition of the Hamilton Spectator referring to a " 'did-gery-do' (hollow bamboo)", a 1914 edition of The Northern Territory Times and Gazette , and a 1919 issue of Smith's Weekly , in which it was referred to as a "didjerry" and was said to produce the sound "didjerry, didjerry, didjerry and so on ad infinitum". A rival explanation, that didgeridoo is a corruption of the Irish phrase dúdaire dubh or Scottish Gaelic dùdaire dúth ,

392-522: A bell end of anywhere between 5 and 20 centimetres (2 and 8 in) and have a length corresponding to the desired key. The end of the pipe can be shaped and smoothed to create a comfortable mouthpiece or an added mouthpiece can be made of any shaped and smoothed material such as rubber, a rubber stopper with a hole or beeswax. Modern didgeridoo designs are distinct from the traditional Australian Aboriginal didgeridoo, and are innovations recognised by musicologists . Didgeridoo design innovation started in

490-456: A complex kinship system ( gurruṯu ). This system governs fundamental aspects of Yolŋu life, including responsibilities for ceremony and marriage rules. People are introduced to children in terms of their relation to the child ("grandmother", "uncle", etc.), introducing the child to kinship from the beginning. Yolŋu societies are generally described in terms of a division of two exogamous patrimoieties : Dhuwa and Yirritja . Each of these

588-530: A didgeridoo. A 2006 study reported in the British Medical Journal found that learning and practising the didgeridoo helped reduce snoring and obstructive sleep apnea by strengthening muscles in the upper airway, thus reducing their tendency to collapse during sleep. In the study, intervention subjects were trained in and practised didgeridoo playing, including circular breathing and other techniques. Control subjects were asked not to play

686-414: A feedback loop. These two elements are coupled at the flue exit and at the labium. At the flue exit the transversal acoustic flow of the pipe perturbs the jet. At the labium the jet oscillation results in a generation of acoustic waves, which maintain the pipe oscillation. The acoustic flow in the pipe can for a steady oscillation be described in terms of standing waves . These waves have a pressure node at

784-402: A flute can be described by a lumped element model in which the pipe acts as an acoustic swing (mass-spring system, resonator ) that preferentially oscillates at a natural frequency determined by the length of the tube. The instability of the jet acts as an amplifier transferring energy from the steady jet flow at the flue exit to the oscillating flow around the labium. The pipe forms with the jet

882-462: A foothold on the fringes of this area, and of the anthropologist Donald Thomson , who led a groundswell of indignation at the travesty of justice, averted an official reprisal designed to "teach the wild blacks a lesson." One sentence was quashed, three sons of a local leader were released as was Dagiar, who had received a death sentence. It was widely believed that the latter, who disappeared, had been lynched by local policemen. Thomson lived with

980-435: A group of peoples who shared, in his analysis, a distinctive form of kinship organisation , describing their marriage rules, subsection system and kinship terminology. Other researchers in the field quickly contested his early findings. T. Theodor Webb argued that Warner's Murngin actually referred to one moiety , and could only denote a Yiritcha mala , and dismissed Warner's terminology as misleading. A. P. Elkin , comparing

1078-415: A lot" of "the blacks" living on the coast at Blue Mud Bay . During the period of Watson's management, another large massacre is recorded to have happened at Mirki on the north coast of Florida Station. The Yolngu people today remember this massacre where many people including children were shot dead. The battles between the graziers and the local population resulted in a severe depopulation of Yolngu, but

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1176-643: A new work called Waŋa , performed in collaboration with MIKU Performing Arts and Darwin Symphony Orchestra , which shows the story of a spirit's journey after death. Yolŋu identify six distinct seasons: Miḏawarr, Dharratharramirri, Rärranhdharr, Bärra'mirri, Dhuluḏur, Mayaltha and Guṉmul . Yolŋu engaged in extensive trade annually with Makassan fishermen at least two centuries before contact with Europeans. They made yearly visits to harvest trepang and pearls , paying Yolŋu in kind with goods such as knives, metal, canoes, tobacco and pipes. In 1906,

1274-652: A note for as long as desired. Recordings exist of modern didgeridoo players playing continuously for more than 40 minutes; Mark Atkins on Didgeridoo Concerto (1994) plays for over 50 minutes continuously. Although circular breathing does eliminate the need to stop playing to take a breath, discomfort might still develop during a period of extended play due to chapped lips or other oral discomfort. The didgeridoo functions "...as an aural kaleidoscope of timbres" and "the extremely difficult virtuoso techniques developed by expert performers find no parallel elsewhere." The didgeridoo virtuoso and composer William Barton has expanded

1372-897: A potential health risk. One 2011 study focused on brass and woodwind instruments observed "temporary and sometimes dramatic elevations and fluctuations in IOP". Another study found that the magnitude of increase in intraocular pressure correlates with the intraoral resistance associated with the instrument and linked intermittent elevation of intraocular pressure from playing high-resistance wind instruments to incidence of visual field loss. The range of intraoral pressure involved in various classes of ethnic wind instruments, such as Native American flutes , has been shown to be generally lower than Western classical wind instruments. Yolngu The Yolngu or Yolŋu ( IPA: [ˈjuːlŋʊ] or [ˈjuːŋuːl] ) are an aggregation of Aboriginal Australian people inhabiting north-eastern Arnhem Land in

1470-586: A record exceed only by polygamous arrangements among the Tiwi . As with nearly all Aboriginal groups, avoidance relationships exist in Yolngu culture between certain relations. The two main avoidance relationships are: Brother–sister avoidance, called mirriri , normally begins after initiation . In avoidance relationships, people do not speak directly or look at one another, and try to avoid being in too close proximity with each other. The word for "law" in Yolngu

1568-452: A remonstration over the tardiness of the Hawke government in enacting promises to deal with Aboriginal land rights, and made a powerful pleas for respect for Yolngu culture, territory and Law. Yolngu artists and performers have been at the forefront of global recognition of Aboriginal and Torres Strait Islander culture. Yolngu traditional dancers and musicians have performed widely throughout

1666-537: A slightly fuller and richer sound, but without the "overtone" note. There are at least 45 names for the didgeridoo, several of which suggest its original construction of bamboo, such as bambu , bombo , kambu , and pampu , which are still used in the lingua franca by some Aboriginal people. The following are some of the more common regional names. A didgeridoo is usually cylindrical or conical , and can measure anywhere from 1 to 3 m (3 to 10 ft) long. Most are around 1.2 m (4 ft) long. Generally,

1764-400: A suitable hollow, including knowledge of landscape and termite activity patterns, and a kind of tap or knock test, in which the bark of the tree is peeled back, and a fingernail or the blunt end of a tool, such as an axe, is knocked against the wood to determine if the hollow produces the right resonance. Once a suitably hollow tree is found, it is cut down and cleaned out, the bark is taken off,

1862-442: A vibrating sound of the lips to produce the basic drone. More advanced playing involves the technique known as circular breathing . The circular breathing technique requires breathing in through the nose whilst simultaneously using the muscles of the cheeks to compress the cheeks and release the stored air out of the mouth. By using this technique, a skilled player can replenish the air in their lungs, and with practice they can sustain

1960-456: Is rom , and there are particular ceremonies associated with Rom, known as Rom ceremony . The complete system of Yolngu customary law is known as Ngarra , or as the Maḏayin (also written madayan and Mardiyhin ). Maḏayin embodies the rights of the owners of the law, or citizens ( rom watangu walal ) who have the rights and responsibilities for this embodiment of law. Maḏayin includes all

2058-602: Is a name for sacred objects or emblems used in ceremony . The concept of Wangarr (also spelt Wanja or Waŋa ) is complex. Attempts to translate the term into English have called the Wangarr beings variously "spirit man/woman", "ancestor", " totem ", or various combinations. The Yolngu believe that the Wangarr ancestor-beings not only hunted, gathered food and held ceremonies as the Yolngu do today, but also that they created plants and geographical features such as rivers, rocks, sandhills and islands, and these features now incorporate

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2156-423: Is also producing the aeolian sound of a cylinder placed normal to an air-flow (singing wire phenomenon). In all these cases (flute, edgetone, aeolian tone...) the sound production does not involve a vibration of the wall. Hence the material in which the flute is made is not relevant for the principle of the sound production. There is no essential difference between a golden or a silver flute. The sound production in

2254-465: Is controversial. Irish dúdaire or dúidire , and Scottish Gaelic dùdaire , are nouns that, depending on the context, may mean "trumpeter", " hummer ", " crooner " or " puffer ", while Irish dubh means "black", and Scottish Gaelic dúth means " native ". There are numerous names for the instrument among the Aboriginal peoples of northern Australia , none of which closely resemble

2352-646: Is derived from the Makassar language via the Malay "orang belanda" ( Dutch person ). In 1883, the explorer David Lindsay was the first colonial white to penetrate Yolngu lands for the purposes of making a survey of its resources and prospects. He trekked along the Goyder River to reach the Arafura Swamp on the western fringe of Wagilak land. In 1884, 10,000 square miles (26,000 km ) of Arnhem Land

2450-480: Is represented by people of a number of different groups, each of which have their own lands, languages, totems and philosophies. Warramiri, Dhalwaŋu, Liyalanmirri, Mäḻarra, Gamalaŋa, Gorryindi. Ŋaymil, Djarrwark, Djambarrpuyŋu. A Yirritja person must always marry a Dhuwa person (and vice versa). Children take their father's moiety, meaning that if a man or woman is Dhuwa , their mother will be Yirritja (and vice versa). Kinship relations are also mapped onto

2548-511: Is somewhat in the manner of a trombone . The didgeridoo has been used by a number of modern bands in various types of music. It was featured on the British children's TV series Blue Peter . Industrial music bands like Test Dept use the didgeridoo. Early songs by the acid jazz band Jamiroquai featured didgeridoo player Wallis Buchanan, including the band's first single " When You Gonna Learn ", which features prominent didgeridoo in

2646-600: The Adelaide River, Northern Territory ". According to A. P. Elkin , in 1938, the instrument was "only known in the eastern Kimberley [region in Western Australia] and the northern third of the Northern Territory ". The name didgeridoo is not of Aboriginal Australian linguistic origin and is considered to be an onomatopoetic word. The earliest occurrences of the word in print include

2744-481: The Cobourg Peninsula (about 350 kilometres (220 mi) east of Darwin ) playing the instrument. Others observed such an instrument in the same area, made of bamboo and about 3 feet (0.9 m) long. In 1893, English palaeontologist Robert Etheridge, Junior observed the use of "three very curious trumpets" made of bamboo in northern Australia. There were then two native species of bamboo growing along

2842-584: The Dreaming Law . For example, in 1966, ethnomusicologist Alice Marshall Moyle made a recording in Borroloola of Jemima Wimalu, a Mara woman from the Roper River, proficiently playing the didgeridoo. In 1995, musicologist Steve Knopoff observed Yirrkala women performing djatpangarri songs that are traditionally performed by men and in 1996, ethnomusicologist Elizabeth MacKinley reported women of

2940-652: The Gumatj clan is the most prominent in the Yirritja moiety. The ethnonym Murrgin gained currency after its extensive use in a book by the American anthropologist W. Lloyd Warner , whose study of the Yolngu, A Black Civilization: a Social Study of an Australian Tribe (1937) quickly assumed the status of an ethnographical classic, considered by R. Lauriston Sharp the "first adequately rounded out descriptive picture of an Australian Aboriginal community." Norman Tindale

3038-669: The Northern Territory of Australia. Yolngu means "person" in the Yolŋu languages . The terms Murngin , Wulamba , Yalnumata , Murrgin and Yulangor were formerly used by some anthropologists for the Yolngu. All Yolngu clans are affiliated with either the Dhuwa (also spelt Dua ) or the Yirritja moiety . Prominent Dhuwa clans include the Rirratjiŋu and Gälpu clans of the Dangu people , while

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3136-736: The South Australian Government did not renew the Makassans' permit to harvest trepang, and the disruption caused economic losses for the regional Yolŋu economy. Yolŋu oral histories and the Djanggawul myths preserve accounts of a Baijini people, who are said to have preceded the Makassan. These Baijini have been variously interpreted by modern researchers as a different group of (presumably, Southeast Asian ) visitors to Australia who may have visited Arnhem Land before

3234-414: The Yolŋu languages is gurrutumiriw , literally "kin lacking" or "acting as if one has no kin". The moiety-based kinship of the Yolngu does not map in a straightforward way to the notion of the nuclear family , which makes accurate standardised reporting of households and relationships difficult, for example in the census . Polygamy is a normal part of Yolngu life: one man was known to have 29 wives,

3332-477: The Yolŋu languages of the indigenous people of northeast Arnhem Land the name for the instrument is the yiḏaki , or more recently by some, mandapul . In the Bininj Kunwok language of West Arnhem Land it is known as mako . A didgeridoo is usually cylindrical or conical , and can measure anywhere from 1 to 3 m (3 to 10 ft) long. Most are around 1.2 m (4 ft) long. Generally,

3430-413: The harmonic spacing of the resonances in a cylindrical plastic pipe, whose resonant frequencies fall in the ratio 1:3:5 etc. The second resonance of a didgeridoo (the note sounded by overblowing) is usually around an 11th higher than the fundamental frequency (a frequency ratio of 8:3). The vibration produced by the player's lips has harmonics in the ratio 1:2:3 etc. However, the non-harmonic spacing of

3528-495: The land rights movement. When the politicians demonstrated they would not change their minds, the Yolngu of Yirrkala took their grievances to the courts in 1971, in the case of Milirrpum v Nabalco Pty Ltd , or the Gove land rights case. Yolngu lost the case because Australian courts were still bound to follow the terra nullius principle, which did not allow for the recognition of any prior rights to land to Indigenous people at

3626-464: The resonances of the instrument. On woodwinds, most notes vent at the uppermost open tone holes; only the lowest notes of each register vent fully or partly at the bell, and the bell's function in this case is to improve the consistency in tone between these notes and the others. Playing some wind instruments, in particular those involving high breath pressure resistance, produce increases in intraocular pressure , which has been linked to glaucoma as

3724-400: The vibrational modes depends on the speed of sound in air, which varies with air density . A change in temperature, and only to a much smaller degree also a change in humidity, influences the air density and thus the speed of sound, and therefore affects the tuning of wind instruments. The effect of thermal expansion of a wind instrument, even of a brass instrument, is negligible compared to

3822-596: The Japanese crew. Two whites, Fagan and Traynor, were killed near Woodah Island the following year, and soon afterwards, in July, Constable McColl, who was investigating the incidents, was speared on that island. The Aboriginal evidence was ignored in the trials which led to their conviction and the imprisonment of five Yolŋu in Fannie Bay Gaol in present-day Darwin . Only the intervention of missionaries, who had

3920-554: The Makassans, as a mythological reflection of the experiences of some Yolŋu people who have travelled to Sulawesi with the Macassans and came back, or perhaps as traders from China. Yolŋu also had well-established trade routes within Australia, extending to Central Australian clans and other Aboriginal countries. They did not manufacture boomerangs themselves but obtained these via trade from Central Australia. This contact

4018-584: The Yanyuwa group giving public performances. Although there is no prohibition in the area of the didgeridoo's origin, such restrictions have been applied by other Indigenous communities. The didgeridoo was introduced to the Kimberleys in the early 20th century but it was only much later, such as in Rose's 2008 criticism of The Daring Book for Girls , that Aboriginal men showed adverse reactions to women playing

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4116-614: The Yolŋu for several years (1935–1937) and made some photographic and written records of their way of life at that time. These have become important historical documents for both Yolŋu and European Australians. In 1935 a Methodist mission opened at Yirrkala . In 1941, during World War II , Thomson persuaded the Australian Army to establish a Special Reconnaissance Unit ( NTSRU ) of Yolŋu men to help repel Japanese raids on Australia's northern coastline (classified as top secret at

4214-638: The beat for the songs during ceremonies. The rhythm of the didgeridoo and the beat of the clapsticks are precise, and these patterns have been handed down for many generations. In the Wangga genre, the song-man starts with vocals and then introduces bilma to the accompaniment of didgeridoo. Traditionally, only men play the didgeridoo and sing during ceremonial occasions; playing by women is sometimes discouraged by Aboriginal communities and elders. In 2008, publisher HarperCollins apologised for its book The Daring Book for Girls , which openly encouraged girls to play

4312-599: The clan, from a private collection, was copied and featured on the original Australian one-dollar note . When the copyright violation came to light the Australian government, through the direct agency of H. C. Coombs , hastened to remunerate the artist. Yolngu are also weavers . They weave dyed pandanus leaves into baskets. Necklaces are also made from beads made of seeds, fish vertebrae or shells. Colours are often important in determining where artwork comes from and which clan or family group created it. Some designs are

4410-559: The didgeridoo in some songs, including "Love the Way You Hate Me" from their album Chaos Theory: Part 1 (2012). Kate Bush made extensive use of the didgeridoo, played by Australian musician Rolf Harris , on her album The Dreaming (1982), which was written and recorded after a holiday in Australia. Traditionally, the didgeridoo was played as an accompaniment to ceremonial dancing and singing and for solo or recreational purposes. For Aboriginal peoples of northern Australia,

4508-442: The didgeridoo's sound can be made by adding vocalisations to the drone. Most of the vocalisations are related to sounds emitted by Australian animals, such as the dingo or the kookaburra . To produce these sounds, the players use their vocal folds to produce the sounds of the animals whilst continuing to blow air through the instrument. The results range from very high-pitched sounds to much lower sounds involving interference between

4606-603: The eastern Arnhem Land tribes constituting the Yolngu lacked the standard tribal structures evidenced elsewhere in Aboriginal Australia, in comprising several distinct socio-linguistic realities in an otherwise integral cultural continuum. He classified these as the Yan-nhaŋu , Djinang , Djinba , Djaŋu , Dangu , Rembarrnga , Ritharngu , Dhuwal and the Dhuwala . Warner had deployed the term "Murngin" to denote

4704-437: The ends trimmed, and the exterior is shaped; this results in a finished instrument. A rim of beeswax may be applied to the mouthpiece end. Non-traditional didgeridoos can be made from native or non-native hard woods (typically split, hollowed and rejoined), glass, fibreglass , metal, agave , clay, resin , PVC piping and carbon fibre. These typically have an upper inside diameter of around 3 centimetres (1.2 in) down to

4802-502: The essence of the Wangarr. They also named species of plant and animal, and made these sacred to the local clan; some Wangarr took on the characteristics of a species, which then became the totem of the clan. Sacred objects and certain designs are also associated with certain Wangarr, who also gave that clan their language, law, paintings, songs, dances, ceremonies and creation stories . In 2022 Rirratjŋu lore man Banula Marika advised choreographer Gary Lang and his NT Dance Company on

4900-493: The family of brass instruments because the vibration is initiated by the player's lips. In the Hornbostel-Sachs scheme of musical instrument classification , wind instruments are classed as aerophones . Sound production in all wind instruments depends on the entry of air into a flow-control valve attached to a resonant chamber ( resonator ). The resonator is typically a long cylindrical or conical tube, open at

4998-400: The far end. A pulse of high pressure from the valve will travel down the tube at the speed of sound . It will be reflected from the open end as a return pulse of low pressure. Under suitable conditions, the valve will reflect the pulse back, with increased energy, until a standing wave forms in the tube. Reed instruments such as the clarinet or oboe have a flexible reed or reeds at

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5096-547: The first death in the Dreamtime , is the beginning of Maḏayin , the cycle of life and death. A Deakin University study published in 2000 investigated Aboriginal knowledge systems in reaction to what the authors regarded as Western ethnocentrism in science studies . The author argues that Yolngu culture is a system of knowledge different in many ways from that of Western culture , and may be broadly described as viewing

5194-490: The fluid travels towards the labium. This results into a global transversal motion of the jet at the labium. The amplification of perturbations of a jet by its intrinsic instability can be observed when looking at a plume of cigarette smoke. Any small amplitude motion of the hand holding the cigarette results into an oscillation of the plume increasing with distance upwards and eventually a chaotic motion (turbulence). The same jet oscillation can be triggered by gentle air flow in

5292-435: The insignia of particular families and clans. The Yothu Yindi band, especially after its song "Treaty", performed the most popular indigenous music since Jimmy Little 's Royal Telephone (1963) became Australia's most successful contemporary indigenous music group, and performed throughout the world. Their work has elicited serious musicological analysis. Arnhem Land is the home of the yiḏaki , which Europeans have named

5390-417: The instrument after Aboriginal academic Mark Rose described such encouragement as "extreme cultural insensitivity" and "an extreme faux pas   ... part of a general ignorance that mainstream Australia has about Aboriginal culture." However, Linda Barwick , an ethnomusicologist , said that though traditionally women have not played the didgeridoo in ceremony, in informal situations there is no prohibition in

5488-623: The instrument and prohibitions are especially evident in the South East of Australia. The belief that women are prohibited from playing is widespread among non-Aboriginal people and is also common among Aboriginal communities in Southern Australia; some ethnomusicologists believe that the dissemination of the taboo belief and other misconceptions is a result of commercial agendas and marketing. The majority of commercial didgeridoo recordings available are distributed by multinational recording companies and feature non-Aboriginal people playing

5586-407: The instrument's resonances means that the harmonics of the fundamental note are not systematically assisted by instrument's resonances, as is usually the case for Western wind instruments (e.g., in the low range of the clarinet , the 1st, 3rd, and 5th harmonics of the reed are assisted by resonances of the bore). Sufficiently strong resonances of the vocal tract can strongly influence the timbre of

5684-460: The instrument. At some frequencies, whose values depend on the position of the player's tongue, resonances of the vocal tract inhibit the oscillatory flow of air into the instrument. Bands of frequencies that are not thus inhibited produce formants in the output sound. These formants, and especially their variation during the inhalation and exhalation phases of circular breathing, give the instrument its readily recognisable sound. Other variations in

5782-638: The instrument. Subjects were surveyed before and after the study period to assess the effects of intervention. A small 2010 study noted marked improvements in the asthma management of 10 Aboriginal adults and children following a six-month programme of once-weekly didgeridoo lessons. Wind instrument Almost all wind instruments use the last method, often in combination with one of the others, to extend their register. Wind instruments are typically grouped into two families: Woodwind instruments were originally made of wood, just as brass instruments were made of brass, but instruments are categorized based on how

5880-572: The introduction and solo sections. Ambient artist Steve Roach uses it in his collaborative work Australia: Sound of the Earth with Australian Aboriginal artist David Hudson and cellist Sarah Hopkins, as well as Dreamtime Return . It is used in the Indian song " Jaane Kyon " from the film Dil Chahta Hai . Chris Brooks, lead singer of the New Zealand hard rock band Like a Storm , uses

5978-450: The lands owned by the Yolŋu through their hereditary estates – so almost everything is either Yirritja or Dhuwa – every fish, stone, river, etc., belongs to one or the other moiety . For example, Yirritja yiḏaki ( didgeridoos ) are shorter and higher-pitched than Dhuwa yiḏaki . A few items are wakinŋu (without moiety). The term yothu-yindi (after which the band takes its name) literally means child-big (one) , and describes

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6076-412: The languages and dialects they speak, but generally sharing overall similarities in the ritual life and hunter-gathering economic and cultural lifestyles in the territory of eastern Arnhem land. Early ethnographers studying the Yolngu applied the nineteenth-century concepts of tribe , horde and phratry to classify and sort into separate identities the units forming the Yolngu ethnocultural mosaic. After

6174-475: The late 20th century, using non-traditional materials and non-traditional shapes. The practice has sparked, however, a good deal of debate among indigenous practitioners and non-indigenous people about its aesthetic, ethical, and legal issues. Didgeridoos can be painted by their maker or a dedicated artist using traditional or modern paints while others retain the natural wood grain design with minimal or no decoration. A didgeridoo can be played simply by producing

6272-409: The lip and vocal fold vibrations. Adding vocalisations increases the complexity of the playing. Charlie McMahon , who formed the group Gondwanaland , was one of the first non-Aboriginal players to gain fame as a professional didgeridoo player. He has toured internationally with Midnight Oil . He invented the didjeribone, a sliding didgeridoo made from two lengths of plastic tubing; its playing style

6370-462: The lips are most closed, and the air flow is lowest, when a low-pressure pulse arrives at the mouthpiece, to reflect a low-pressure pulse back down the tube. Standing waves inside the tube will be odd multiples of a quarter- wavelength , with a pressure anti-node at the mouthpiece, and a pressure node at the open end. For Air Reed ( flute and fipple -flute) instruments, the thin grazing air sheet (planar jet) flowing across an opening (mouth) in

6468-641: The longer the instrument, the lower its pitch or key. Flared instruments play a higher pitch than unflared instruments of the same length. There are no reliable sources of the exact age of the didgeridoo. Archaeological studies suggest that people of the Kakadu region in Northern Australia have been using the didgeridoo for less than 1,000 years, based on the dating of rock art paintings. A clear rock painting in Ginga Wardelirrhmeng, on

6566-474: The longer the instrument, the lower its pitch or key. However, flared instruments play a higher pitch than unflared instruments of the same length. The didgeridoo is classified as a wind instrument and is similar in form to a straight trumpet , but made of wood. It has also been called a dronepipe. Traditional didgeridoos are usually made from hardwoods , especially the various eucalyptus species that are endemic to northern and central Australia. Generally

6664-404: The main trunk of the tree is harvested, though a substantial branch may be used instead. Traditional didgeridoo makers seek suitably hollow live trees in areas with obvious termite activity. Termites attack these living eucalyptus trees, removing only the dead heartwood of the tree, as the living sapwood contains a chemical that repels the insects. Various techniques are employed to find trees with

6762-467: The mouth opening and another pressure node at the opposite open pipe termination. Standing waves inside such an open-open tube will be multiples of a half- wavelength . To a rough approximation, a tube of about 40 cm. will exhibit resonances near the following points: In practice, however, obtaining a range of musically useful tones from a wind instrument depends to a great extent on careful instrument design and playing technique. The frequency of

6860-417: The mouthpiece, forming a pressure-controlled valve. An increase in pressure inside the chamber will decrease the pressure differential across the reed; the reed will open more, increasing the flow of air. The increased flow of air will increase the internal pressure further, so a pulse of high pressure arriving at the mouthpiece will reflect as a higher-pressure pulse back down the tube. Standing waves inside

6958-421: The nature of this type of sound source has been provided by Alan Powell when studying a planar jet interacting with a sharp edge in the absence of pipe (so called edgetone). The sound radiated from the edgetone can be predicted from a measurement of the unsteady force induced by the jet flow on the sharp edge (labium). The sound production by the reaction of the wall to an unsteady force of the flow around an object

7056-533: The northern edge of the Arnhem Land plateau, from the freshwater period (that had begun 1500 years ago) shows a didgeridoo player and two song-men participating in an Ubarr ceremony. It is thus thought that it was developed by Aboriginal peoples of northern Australia, possibly in Arnhem Land . T. B. Wilson's Narrative of a Voyage Round the World (1835) includes a drawing of an Aboriginal man from Raffles Bay on

7154-520: The ownership of land and waters, the resources on or within these lands and waters. It regulates and controls production and trade and the moral, social and religious law including laws for the conservation and the farming of plants and aquatic life. Yolŋu believe that living out their life according to Maḏayin is right and civilised. The Maḏayin creates a state of Magaya , which is a state of peace, freedom from hostilities and true justice for all. The story of Barnumbirr (Morning Star), depicting

7252-414: The people's law ( rom ); the instruments and objects that encode and symbolise the law ( Maḏayin girri ); oral dictates; names and song cycles; and the holy, restricted places ( dhuyu ṉuŋgat wäŋa ) that are used in the maintenance, education and development of law. Galarrwuy Yunupingu has described Rom watangu as the overarching law of the land, which is "lasting and alive... my backbone". This law covers

7350-399: The pipe interacts with a sharp edge (labium) to generate sound. The jet is generated by the player, when blowing through a thin slit (flue). For recorders and flue organ pipes this slit is manufactured by the instrument maker and has a fixed geometry. In a transverse flute or a pan flute the slit is formed by the musicians between their lips. Due to acoustic oscillation of the pipe the air in

7448-406: The pipe is alternatively compressed and expanded. This results in an alternating flow of air into and out of the pipe through the pipe mouth. The interaction of this transversal acoustic flow with the planar air jet induces at the flue exit (origin of the jet) a localised perturbation of the velocity profile of the jet. This perturbation is strongly amplified by the intrinsic instability of the jet as

7546-469: The property rights of much of Arnhem Land were held by the Eastern and African Cold Storage Supply Company . This Anglo-Australian consortium leased the region under the name of Arafura cattle station and attempted to construct a massive cattle raising and meat production industry. The company employed roving gangs of armed men to shoot the resident Aboriginal population. The first mission to Yolngu country

7644-440: The role of the instrument in the concert hall both with his own orchestral and chamber music works and with those written or arranged for him by prominent Australian composer Peter Sculthorpe . A termite-bored didgeridoo has an irregular shape that, overall, usually increases in diameter towards the lower end. This shape means that its resonances occur at frequencies that are not harmonically spaced in frequency. This contrasts with

7742-418: The room, which can be verified by waving with the other hand. The oscillation of the jet around the labium results into a fluctuating force of the airflow on the labium. Following the third law of Newton the labium exerts an opposite reaction force on the flow. One can demonstrate that this reaction force is the source of sound that drives the acoustic oscillation of the pipe. A quantitative demonstration of

7840-429: The sound is produced, not by the material used to construct them. For example, saxophones are typically made of brass, but are woodwind instruments because they produce sound with a vibrating reed . On the other hand, the didgeridoo , the wooden cornett (not to be confused with the cornet ), and the serpent are all made of wood (or sometimes plastic), and the olifant is made from ivory , but all of them belong to

7938-422: The special relationship between a person and their mother's moiety (the opposite to their own). Because of yothu-yindi , Yirritja have a special interest in and duty towards Dhuwa (and vice versa). For example, a Gumatj man may craft the varieties of yiḏaki associated with his own (Yirritja) clan group and the varieties associated with his mother's (Dhuwa) clan group. The word for "selfish" or "self-centred" in

8036-518: The stiffness of resistance temporarily ended efforts by the intruding balanda to take over further territory, and efforts at settlement ground to a halt. Monsoonal flooding, disease and the strong resistance from the local Aboriginal population resulted in Florida Station being abandoned by Macartney in 1893. In the early 20th century, Yolngu oral history relates, punitive expeditions were launched into their territories. From 1903 to 1908,

8134-537: The struggle for Aboriginal land rights . In 1963, provoked by a unilateral government decision to excise a part of their land for a bauxite mine, Yolngu at Yirrkala sent to the Australian House of Representatives a petition on bark . The bark petition attracted national and international attention and now hangs in Parliament House, Canberra as a testament to the Yolngu role in the birth of

8232-423: The thermal effect on the air. The bell of a wind instrument is the round, flared opening opposite the mouthpiece. It is found on clarinets, saxophones, oboes, horns, trumpets and many other kinds of instruments. On brass instruments, the acoustical coupling from the bore to the outside air occurs at the bell for all notes, and the shape of the bell optimizes this coupling. It also plays a major role in transforming

8330-675: The time of colonisation. However, the Judge did acknowledge the claimants' ritual and economic use of the land and that they had an established system of law, paving the way for future Aboriginal land rights in Australia . It was said to have played a vital part in paving the way to the recognition of Aboriginal land rights in the Aboriginal Land Rights Act 1976 and the Mabo decision in 1992. The song "Treaty", by Yothu Yindi , which became an international hit in 1989, arose as

8428-443: The time). Yolŋu made contact with Australian and US servicemen , although Thomson was keen to prevent this. Thomson relates how the soldiers would often try to obtain Yolŋu spears as mementos. These spears were vital to Yolŋu livelihood, and took several days to make and forge. More recently, Yolngu have seen the imposition of large mines on their tribal lands at Nhulunbuy . Since the 1960s Yolngu leaders have been conspicuous in

8526-399: The tube will be odd multiples of a quarter- wavelength , with a pressure anti-node at the mouthpiece, and a pressure node at the open end. The reed vibrates at a rate determined by the resonator . For Lip Reed ( brass ) instruments, the players control the tension in their lips so that they vibrate under the influence of the air flowing through them. They adjust the vibration so that

8624-486: The word mandapul after 2011, out of respect for the passing of a Manggalili man who had a name sounding similar to yidaki. In west Arnhem Land, it is known as a mako , a name popularised by virtuoso player David Blanasi , a Bininj man, whose language was Kunwinjku , and who brought the didgeridoo to world prominence. However the mako is slightly different from the Yiḏaki: usually shorter, and sounding somewhat different –

8722-542: The word "didgeridoo" (see below). Some didgeridoo enthusiasts, scholars and Aboriginal people advocate using local language names for the instrument. Yiḏaki (transcribed yidaki in English, sometimes spelt yirdaki ) is one of the most commonly used names although, strictly speaking, it refers to a specific type of the instrument made and used by the Yolngu peoples of north-east Arnhem Land . Some Yolngu people began using

8820-450: The work of Ian Keen in particular, such taxonomic terminology is increasingly seen as problematical, and inadequate because of its eurocentric assumptions. Specialists are undecided, for example, whether the languages spoken by the Yolngu amount to five or eight, and one survey arrived at eleven distinct "dialect" groups. Yolŋu speak a dozen languages classified under the general heading of Yolngu Matha . Yolŋu groups are connected by

8918-442: The work of Warner and Webb, endorsed the latter's analysis as more congruent with the known facts. Wilbur Chaseling used the term "Yulengor" in the title of his 1957 work. Since the 1960s, the term Yolŋu has been widely used by linguists, anthropologists and the Yolŋu people themselves. The term applies to both the sociocultural unit and the language dialects within it. Yolngu comprise several distinct groups, differentiated by

9016-765: The world and retain a germinal influence, through the patronage of the Munyarryun and Marika families in particular, on contemporary performance troupes such as Bangarra Dance Theatre . Before the emergence of the Western Desert art movement , the most well-known Aboriginal art was the Yolngu style of fine cross-hatching paintings on bark . The hollow logs ( larrakitj ) used in Arnhem Land burial practices serve an important spiritual purpose and are also important canvases for Yolngu art. David Malangi Daymirringu 's bark depiction of Manharrnju clan mourning rites of

9114-512: The world as a related whole rather than as a collection of objects. The relationship between Yolngu and Western knowledge is explored by using the Yolngu idea of gaṉma ( Yerin in the Guringai language), which metaphorically describes two streams, one coming from the land (Yolngu knowledge) and one from the sea (Western knowledge) engulfing each other so that "the forces of the streams combine and lead to deeper understanding and truth". Raŋga

9212-573: The yidaki is still used to accompany singers and dancers in cultural ceremonies . For the Yolngu people, the yidaki is part of their whole physical and cultural landscape and environment, comprising the people and spirit beings which belong to their country, kinship system and the Yolngu Matha language . It is connected to Yolngu Law and underpinned by ceremony, in song, dance, visual art and stories. Pair sticks, sometimes called clapsticks ( bilma or bimla by some traditional groups), establish

9310-506: Was dismissive of the term, regarding it, like the term Kurnai , as "artificial", having been arbitrarily applied to a large number of peoples of northeastern Australia. The proper transliteration of the word was, in any case, Muraŋin , meaning " shovel-nosed spear folk", an expression appropriate to western peripheral tribes, such as the Rembarrnga of the general area Warner described. For Tindale, following recent linguistic studies,

9408-399: Was maintained through use of message sticks , as well as mailmen – with some men walking several hundred kilometres in their work to send messages and relay orders between tribes. Yolŋu had known about Europeans before the arrival of British in Australia through their contact with Macassan traders, which probably began around the sixteenth century. Their word for European, Balanda ,

9506-500: Was set up at Milingimbi Island in 1922. The island is the traditional home of the Yan-nhaŋu . Beginning in 1932, over two years, three incidents of killing outsiders caused problems for the Yolngu. In 1932 five Japanese trepangers were speared by Yolŋu men, in what became known as the Caledon Bay crisis . Yolngu men testified that their actions arose in response to the abuse of their women and to thrashings and firing on them by

9604-472: Was sold by the colonial British government to cattle grazier , John Arthur Macartney . The property was called Florida Station and Macartney stocked it with cattle overlanded from Queensland. The first manager of the property, Jim Randell, bolted a swivel cannon to the verandah of the homestead to keep the Indigenous people away, while Jack Watson , the last manager of the property, reportedly "wiped out

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