86,778 research outputs found
Il “Contratto di Fiume” per la gestione e la valorizzazione del torrente Serra - Uno strumento per l’integrazione di competenze, in direzione di una gestione multifunzionale
No full textMathematical modeling of the orchestral timpani
No full textThe orchestral timpani is modeled as an ideal membrane capping a rigid kettle in an air medium. Room acoustics are ignored. Green function and boundary integral methods are used to investigate the effects of air loading and kettle shape on the vibrational spectrum. It is shown that experimental data on timpani modal vibrations may be fit quantitatively. The relationship among timpani membrane and kettle parameters which give modal frequency ratios f\sb{11}:f\sb{21}:f\sb{31}:f\sb{41} very close to the musically desirable values 2:3:4:5 are investigated using the theoretical model
Virtual Auditory Myography of Timpani-playing Avatars
No full textGrond F, Bouenard A, Hermann T, Wanderley MM. Virtual Auditory Myography of Timpani-playing Avatars. In: Sontacchi A, Pomberger H, Zotter F, eds. Proceedings of the 13th Int. Conference on Digita Audio Effects. 2010: 135-142.Music performance is highly related to instrumentalists' movements and one of the biggest challenges is the identification and understanding of gesture strategies according to the plethora of musical nuances (dynamics, tempo, etc..) available to performers. During these past few years, a novel approach has been elaborated, consisting in studying movement strategies through auditory rendering. In this paper, we focus on the auditory analysis of timpani (percussion) gestures. We present a novel interface combining movement simulation and sonification as a means of enhancing the auditory analysis of timpani gestures. We further report the results from an evaluation of this interface, where we study the contributions of sonification to the multimodal display
Supplementary Material for "Virtual Auditory Myography of Timpani-playing Avatars"
No full textGrond F, Bouenard A, Hermann T, Wanderley MM. Supplementary Material for "Virtual Auditory Myography of Timpani-playing Avatars". Bielefeld University; 2010.<img
src="https://pub.uni-bielefeld.de/download/2697185/2702798"
width="200" style="float:right;">
Music performance is highly related to instrumentalists' movements and one of the biggest challenges is the identification and understanding of gesture strategies according to the plethora of musical nuances (dynamics, tempo, etc..) available to performers. During these past few years, a novel approach has been elaborated, consisting in studying movement strategies through auditory rendering. In this paper, we focus on the auditory analysis of timpani (percussion) gestures. We present a novel interface combining movement simulation and sonification as a means of enhancing the auditory analysis of timpani gestures. We further report the results from an evaluation of this interface, where we study the contributions of sonification to the multimodal display
Of Barbed Wire and Red Roses--II: Suite for Large Brass Ensemble and Timpani (Parts)
No full textOpus 1b: 14 parts (69 pages) ; Parts for Timpani; Trumpet I - IV; Horn I - IV; t-Trombone I - III; b-Trombone; Tuba
The suite Of Barbed Wire and Red Roses—II celebrates the triumph of understanding over hatred, of peace over war. The thirteen brass and timpani are grouped in choirs by movement: Fughetta for Timpani Fanfare for Four Trumpets in B Flat, Three Tenor Trombones and Bass Trombone Interlude for Four Horns in F and Tuba Of Barbed Wire and Red Roses for Thirteen Brass and Timpanihttps://scholarworks.wmich.edu/emmanuel-dubois-compositions/1001/thumbnail.jp
Acoustics of the orchestral kettledrum
No full textA complete theoretical overview of the acoustics of the kettledrum is taken. Starting with the well understood vibrations of a stretched circular membrane in a vacuum, the thesis goes on to investigate the deformation produced when the drum is struck and the subsequent behaviour of the system with time. The vibration of the membrane is modified by mass loading, by the hemispherical kettle, by the membrane's stiffness and by the air loading present; the latter is accounted for using a Green function technique. These effects produce significant changes to the frequencies of a freely vibrating system. The results are compared with those obtained experimentally, with good agreement. The most significant conclusions are that the air loading modifies the frequencies of vibration of those modes having only radial nodes to match the harmonic series, thereby creating a distinct sensation of musical pitch, and that the fundamental mode of vibration is damped completely
The timpani as a vibrating circular membrane : an analysis of several secondary effects
No full textWhen the frequencies of the tiapani modes of vibration are compared with the frequencies predicted by the theory of an ideal circular membrane, the measured fequencies are spread out. Several factors that may cause this phenomenon are analyzed. Because on the low frequencies characteristic f the timpani vibrations, the stiffness of the membrane is ruled out as a contributing factor. The acoustic properties f the surrounding air are then considered. Resistive damping of the membrane is analysed as a possible cause of the frequency shift. When the decay constants for the timpani are measured, this resistive damping is determined. The measured decay constants indicate that this resistive damping causes negligible shifting of the timpani frequencies. Reactive impedance of the surrounding air is then considered. Assuming that the membrane behaves as a circular piston, an approximation f the reactive impedance can be. made and the effective mass loading of the surrounding air can be calculated. Theoretical wave velocities calculated by considering this effective mass loading are compared with the measured wave velocities. Agreement between these two wave velocities indicates that the effective mass loading is the doainant factor in shifting the frequencies of the timpani
Of Barbed Wire and Red Roses--II: Suite for Large Brass Ensemble and Timpani (Full Score)
No full textOpus 1b: 1 score (vi + 37 pages) ; includes acknowledgements, foreword
The suite Of Barbed Wire and Red Roses—II celebrates the triumph of understanding over hatred, of peace over war. The thirteen brass and timpani are grouped in choirs by movement: Fughetta for Timpani Fanfare for Four Trumpets in B Flat, Three Tenor Trombones and Bass Trombone Interlude for Four Horns in F and Tuba Of Barbed Wire and Red Roses for Thirteen Brass and Timpanihttps://scholarworks.wmich.edu/emmanuel-dubois-compositions/1000/thumbnail.jp
Ferramenta de acasalamento Promebo: manual do usuário, versão 1.0.
No full textO software Ferramenta de acasalamento Promebo foi desenvolvido a partir de um trabalho em conjunto entre a Embrapa Pecuária Sul, Associação Nacional de Criadores, Associação Brasileira de Hereford e Braford e Universidade Federal do Pampa. Este manual tem como objetivo descrever o software Ferramenta de acasalamento Promebo e desta forma auxiliar a sua utilização pelos produtores e técnicos envolvidos no processo de seleção de raças bovinas taurinas de corte dentro destes programas de melhoramento genético
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