Thesis (MMus (Music))--University of Stellenbosch, 2008. / This thesis provides an overview of different aspects of the application of vibrato on the flute. Although it is a compilation of different viewpoints, it does not offer a conclusion as regards the ‘correct’ application of vibrato, due to the subjective nature of this phenomenon. The intention is that the reader will be able to reach his or her own conclusions and form new opinions regarding this subject. The focus is largely on the comparison of the production of vibrato on the flute with its production on other instruments. The aim is to examine the different choices involved in the production of vibrato when the flute is part of an ensemble and when it is a solo instrument. By learning more about other instruments’ timbres and production of vibrato, it enables flautists to adapt to different timbres in order to form sonorous ensembles. The physiological and scientific aspects of vibrato are also explored with the view to equip flautists with this knowledge. Thus, flautists will be able to listen to and analyse from a more critical and informed perspective how they themselves use vibrato and how other flautists use it. The main goal of this thesis is to provide enough information, opinions, studies and statistics to enable a flautist to make an informed decision concerning their choice and application of vibrato.

Este trabalho teve por objetivo esclarecer a identidade de duas espécies próximas a Doryctobracon areolatus (Szépligeti) e de uma relacionada a Opius bellus Gahan, mencionada na literatura nacional como Opius sp. aff. bellus, por meio da morfometria geométrica e da análise das regiões do ITS2 do rDNA e 28S rDNA D2. As medidas das asas de D. areolatus, Doryctobracon sp. 1 e Doryctobracon sp. 2, O. bellus e Opius sp. aff. bellus, provenientes de diversas localidades brasileiras, foram estudadas por meio da morfometria geométrica. A avaliação de 20 pontos anatômicos nas asas, por meio de análise multivariada revelou a existência de variabilidade interpopulacional em 11 populações de D. areolatus, provenientes de localidades das cinco regiões brasileiras. O estudo morfométrico ainda revelou que Doryctobracon sp. 1 (estigma claro) e Doryctobracon sp. 2 (estigma escuro) diferem entre si e também de D. areolatus (Szépligeti). No entanto, entre os espécimes de O. bellus Gahan e Opius sp. aff. bellus, os resultados apontaram a coespecificidade desses indivíduos. Com base no tamanho do centróide, os resultados apontam a existência de dimorfismo sexual em relação ao tamanho das asas, ou seja, as fêmeas possuem asas relativamente maiores que as dos machos. Nas análises moleculares, os resultados indicaram a ocorrência de variabilidade intraespecífica, com relação ao tamanho do fragmento entre as populações de D. areolatus provenientes dos estados do AP, SP, GO e TO com a utilização dos dois marcadores moleculares (ITS2 e 28S rDNA D2). Porém, entre os espécimes de Doryctobracon sp. 1 (estigma claro) e de Doryctobracon sp. 2 (estigma escuro), essas regiões não variaram quanto ao tamanho, mas diferiram na composição das sequências, revelando que correspondem realmente a duas espécies. Portanto, houve congruência entre os resultados morfométricos e moleculares para essas espécies de Doryctobracon. Entre os espécimes identificados como Opius bellus e Opius sp. aff. bellus, a região do ITS2 indicou a ocorrência de variabilidade intrapopulacional, semelhante à interpopulacional, com elevada similaridade entre as morfoespécies analisadas. No entanto, a região do 28S rDNA D2 apresentou elevada similaridade entre as sequências obtidas, fortalecendo as indicações de que os espécimes considerados como O. bellus Gahan e Opius sp. aff. bellus, na realidade, pertencem à uma única espécie, conclusão também sustentada pelas análises morfométricas. / This study aimed to elucidate the identity of two-closely related species of Doryctobracon areolatus (Szépligeti) and a closely related species of Opius bellus Gahan, commonly referred to as Opius sp. aff. bellus, by using geometric morphometry and molecular analysis (ITS2 rDNA and 28S rDNA D2 regions). The analysis based on 20 landmarks through the multivariate analysis (CVA) revealed the existence of interpopulation variability in the wing morphology of 11 populations of D. areolatus, from five Brazilian regions. The morphometric study also showed that specimens of Doryctobracon sp. 1 (clear stigma) and Doryctobracon sp. 2 (dark stigma) were distinct between themselves and also from D. areolatus (Szépligeti). However, specimens of O. bellus Gahan and Opius sp. aff. bellus were found to be cospecifics. Analysis based on the centroid size indicated the existence of sexual dimorphism in relation to the size of the wings, ie, females had relatively larger wings than males. The molecular analysis indicated intraspecific variability in the size of the fragment between populations of D. areolatus from Amapá, São Paulo, Goiás and Tocantins states for both of the molecular markers used (ITS2 and 28S D2 rDNA). But these markers had similar sizes for Doryctobracon sp. 1 (stigma clearly) and Doryctobracon sp. 2 (dark stigma), with a very different base composition, indicating the existence of two distinctive species. Both molecular and morphometric analysis gave similar results. Among the specimens identified as Opius bellus and Opius sp. aff. bellus, analysis of the ITS2 region indicated the intrapopulation variability was similar to the interpopulation, with high similarity between the morphospecies analyzed. However, the region of the 28S D2 rDNA showed high similarity between the sequences obtained, reinforcing the indication that the specimens taken as O. bellus Gahan and Opius sp. aff. bellus in fact, belong to the same species, which was also supported by morphometric analysis.

Este trabalho teve por objetivo esclarecer a identidade de duas espécies próximas a Doryctobracon areolatus (Szépligeti) e de uma relacionada a Opius bellus Gahan, mencionada na literatura nacional como Opius sp. aff. bellus, por meio da morfometria geométrica e da análise das regiões do ITS2 do rDNA e 28S rDNA D2. As medidas das asas de D. areolatus, Doryctobracon sp. 1 e Doryctobracon sp. 2, O. bellus e Opius sp. aff. bellus, provenientes de diversas localidades brasileiras, foram estudadas por meio da morfometria geométrica. A avaliação de 20 pontos anatômicos nas asas, por meio de análise multivariada revelou a existência de variabilidade interpopulacional em 11 populações de D. areolatus, provenientes de localidades das cinco regiões brasileiras. O estudo morfométrico ainda revelou que Doryctobracon sp. 1 (estigma claro) e Doryctobracon sp. 2 (estigma escuro) diferem entre si e também de D. areolatus (Szépligeti). No entanto, entre os espécimes de O. bellus Gahan e Opius sp. aff. bellus, os resultados apontaram a coespecificidade desses indivíduos. Com base no tamanho do centróide, os resultados apontam a existência de dimorfismo sexual em relação ao tamanho das asas, ou seja, as fêmeas possuem asas relativamente maiores que as dos machos. Nas análises moleculares, os resultados indicaram a ocorrência de variabilidade intraespecífica, com relação ao tamanho do fragmento entre as populações de D. areolatus provenientes dos estados do AP, SP, GO e TO com a utilização dos dois marcadores moleculares (ITS2 e 28S rDNA D2). Porém, entre os espécimes de Doryctobracon sp. 1 (estigma claro) e de Doryctobracon sp. 2 (estigma escuro), essas regiões não variaram quanto ao tamanho, mas diferiram na composição das sequências, revelando que correspondem realmente a duas espécies. Portanto, houve congruência entre os resultados morfométricos e moleculares para essas espécies de Doryctobracon. Entre os espécimes identificados como Opius bellus e Opius sp. aff. bellus, a região do ITS2 indicou a ocorrência de variabilidade intrapopulacional, semelhante à interpopulacional, com elevada similaridade entre as morfoespécies analisadas. No entanto, a região do 28S rDNA D2 apresentou elevada similaridade entre as sequências obtidas, fortalecendo as indicações de que os espécimes considerados como O. bellus Gahan e Opius sp. aff. bellus, na realidade, pertencem à uma única espécie, conclusão também sustentada pelas análises morfométricas. / This study aimed to elucidate the identity of two-closely related species of Doryctobracon areolatus (Szépligeti) and a closely related species of Opius bellus Gahan, commonly referred to as Opius sp. aff. bellus, by using geometric morphometry and molecular analysis (ITS2 rDNA and 28S rDNA D2 regions). The analysis based on 20 landmarks through the multivariate analysis (CVA) revealed the existence of interpopulation variability in the wing morphology of 11 populations of D. areolatus, from five Brazilian regions. The morphometric study also showed that specimens of Doryctobracon sp. 1 (clear stigma) and Doryctobracon sp. 2 (dark stigma) were distinct between themselves and also from D. areolatus (Szépligeti). However, specimens of O. bellus Gahan and Opius sp. aff. bellus were found to be cospecifics. Analysis based on the centroid size indicated the existence of sexual dimorphism in relation to the size of the wings, ie, females had relatively larger wings than males. The molecular analysis indicated intraspecific variability in the size of the fragment between populations of D. areolatus from Amapá, São Paulo, Goiás and Tocantins states for both of the molecular markers used (ITS2 and 28S D2 rDNA). But these markers had similar sizes for Doryctobracon sp. 1 (stigma clearly) and Doryctobracon sp. 2 (dark stigma), with a very different base composition, indicating the existence of two distinctive species. Both molecular and morphometric analysis gave similar results. Among the specimens identified as Opius bellus and Opius sp. aff. bellus, analysis of the ITS2 region indicated the intrapopulation variability was similar to the interpopulation, with high similarity between the morphospecies analyzed. However, the region of the 28S D2 rDNA showed high similarity between the sequences obtained, reinforcing the indication that the specimens taken as O. bellus Gahan and Opius sp. aff. bellus in fact, belong to the same species, which was also supported by morphometric analysis.

A well formed embouchure and a good tone quality are vital for any flutist. This study is a detailed guide that includes general information, influences and perspectives on/about embouchure and tone for the flutist. Information is provided on how to form a proper embouchure, the relation between embouchure and tone, the purpose of the embouchure and the role of different body parts in a) forming a proper embouchure and b) manipulating the embouchure whilst playing. The anatomy of the human body and its relation to embouchure and tone is discussed. Pictures of the different muscles involved in flute playing, muscles of expression and the anatomy of body parts that influence embouchure and tone, are presented. Flute teachers‟, performers‟ and students‟ perspectives on aspects relating to embouchure and tone, are provided. Diseases, medical conditions, medicine, physical attributes and infections that can influence embouchure and tone are investigated. A discussion of the influences that flute options have on embouchure and tone is included. These options include open- or closed-hole, B or C footjoint, materials, wall thickness, split E or E ring, open- or closed-G#, pads, headjoint design and flute scales. There is also a short discussion about embouchure on big flutes. AFRIKAANS : 'n Goed gevormde embouchure en „n goeie klankkwaliteit is van kardinale belang vir enige fluitspeler. Die studie is „n gedetaileerde gids, en bevat algemene inligting, invloede en perspektiewe op/oor embouchure en klank, vir die fluitspeler. Informasie oor hoe om 'n goeie embouchure te vorm, die verband tussen embouchure en klank, die doel van die embouchure sowel as die rol wat verskillende liggaamsdele speel in a) die vorming van die embouchure en b) die gebruik van die embouchure tydens spel, word voorsien. Die anatomie van die menslike liggaam wat verband hou met embouchure en klank, word bespreek. Prente van verskillende spiere betrokke tydens fluitspel, spiere van ekspressie en die anatomie van die liggaamsdele wat 'n invloed het op embouchure en klank, word voorgestel. Fluit onderwysers, voordraers en studente se perspektiewe rondom aspekte wat verband hou met embouchure en klank, word voorsien. Siektes, mediese toestande, medisyne, fisiese eienskappe en infeksies wat embouchure en klank kan beïnvloed, word ondersoek. 'n Bespreking van die invloede wat fluitopsies op embouchure en klank het, is ingesluit. Hierdie opsies sluit in oop- of geslote-opening, B of C voetstuk, materiale, buis dikte, gesplete E of E ring, oop- of geslote-G#, kussings, kopstuk ontwerp en fluittoonlere. 'n Kort bespreking in verband met embouchure op groot fluite word ook ingesluit. / Dissertation (MMus)--University of Pretoria, 2010. / Music / unrestricted

In hierdie studie word die intonasie van fluitspel ondersoek met die doel om vas te stel watter faktore beïnvloed intonasie en watter metodes aangewend kan word om dit te verbeter. Intonasie is ’n besonder sensitiewe onderwerp vir enige musikant. Indien ’n musikant negatief gekritiseer word oor intonasie, word dit dikwels as ’n persoonlike aanslag ervaar. Deur die oorsprong van Westerse stemmingstelsels te ondersoek, word dit moontlik om die onderwerp van intonasie meer sensitief te benader. Hierdie bewusmaking kan moontlik nuwe insigte tot stand bring ten opsigte van die nodige aanpassings wat gemaak moet word om intonasie te verbeter tydens solo- en ensemble-spel. Verskeie faktore kan daartoe bydra dat intonasie as minder goed ervaar word. Sommige van hierdie faktore word nie noodwendig deur die uitvoerder beheer nie, maar hou verband met die fisiologie van gehoor – hoe klank waargeneem word. Die enigste manier waarop intonasie gemonitor kan word tydens ’n uitvoering, is met die menslike oor. Intonasie is direk gekoppel aan die frekwensie van ’n spesifieke toonhoogte. In die natuur bestaan daar faktore wat die waarneming van ’n frekwensie as ’n spesifieke toonhoogte kan beïnvloed, byvoorbeeld die tydsduur, intensiteit en toonkleur. Hierdie faktore word ook in hierdie studie ondersoek. Alvorens metodes ter verbetering van intonasie ondersoek kan word, moet die bou van die moderne fluit ondersoek word. Geen fluitskaal het perfekte ingeboude intonasie nie en deur bewus te wees van waar die tekortkominge voorkom, kan die uitvoerder die onderwerp van intonasie met groter omsigtigheid benader. Sodra die uitvoerder en onderwyser bewus is van watter faktore intonasie beïnvloed en wat nie deur die uitvoerder beheer word nie, kan metodes oorweeg word om faktore wat wel binne die uitvoerder se beheer is, toe te pas om die fluitspeler se intonasie te verbeter. Verskeie aspekte word bespreek, waaronder die plasing van die kurkstopper, die posisie van die kopstuk ten opsigte van die fluit, die manier waarop die fluit vasgehou word, opwarmingsmetodes en oefeninge, die metode van instemming en toonproduksie. Die toonhoogteneigings van note op die fluit word vergelyk soos dit voorkom in vyf verskillende bronne, waarna alternatiewe vingersettings voorgestel word vir pianissimo- en fortissimo-spel. Hierdie vingersettings kan handig te pas kom om die embouchure te assisteer en intonasie beter te beheer. Laastens word die verband tussen die afwykings in die fluit se intonasie, en klimaat en weerstoestande ondersoek, sodat die speler die uitwerking wat veral temperatuur op intonasie het, ook in ag kan neem. Alhoewel hierdie navorsing grootliks klem lê op fluitspelers, is die studie nie net beperk tot die fluit nie en ander instrumentaliste sal ook hierby kan baatvind. ENGLISH This study investigates the factors that influence intonation when playing the flute. Methods by which intonation may be improved are also examined. All musicians regard intonation as an extremely sensitive subject. Musicians often perceive negative criticism of intonation as a personal affront. By investigating the origin of the Western tuning systems, it becomes possible to approach the subject of intonation with more sensitivity. This awareness may establish new insights with regard to the necessary adjustments that must be made during both solo and ensemble playing. Different factors may contribute to intonation being perceived as unsatisfactory. Some of these factors are not necessarily controlled by the performer, but relate to the physiology of hearing – how sound is perceived. The only way in which intonation can be monitored during a performance, is with the human ear. Intonation is directly linked to the frequency of a specific pitch. Factors exist in nature which may influence the perception of a frequency as a specific pitch, for example duration, intensity and tone colour. These factors are also examined in this study. Before investigating methods to improve intonation, the way that the modern flute is built has to be examined. No flute scale has perfect, built-in intonation. By being aware of the shortcomings that may occur, the performer can approach the subject with greater circumspection. When the performer and the educator are aware of the factors which may influence intonation and which are not controlled by the performer, methods can be considered to apply factors that can be controlled by the performer to improve intonation. Different aspects are discussed, such as the placement of the cork stopper, the position of the head joint with regard to the flute, the way the flute is held, warm-up methods and exercises, how to tune and tone production. The pitch tendency of notes on the flute are compared as they occur in five different sources, after which alternative fingerings are suggested for pianissimo and fortissimo playing. These fingerings are useful in assisting the embouchure to maintain better control of intonation. Finally, the relation between the deviation in the flute’s intonation, and climate and weather conditions are investigated to assist the performer to take into consideration the effect that temperature has on intonation. Although this research focuses on flute players, this study is not restricted to the flute, and other instrumentalists can also benefit from it. / Dissertation (MMus)--University of Pretoria, 2007. / Music / unrestricted