3D Modeling Techniques for the Characterization and Sound Synthesis of Timbila Bars
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Vincent Debut [2] ; Eduardo Oliveira [1]
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[1] Universidade Nova de Lisboa
Universidade Nova de Lisboa
Socorro, Portugal
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[2] Escola Superior de Artes Aplicadas
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- Localización: Perspectives on Music, Sound and Musicology: research, education and practice / Luísa Correia Castilho (ed. lit.), Rui Dias (ed. lit.), José Francisco Pinho (ed. lit.), 2021, ISBN 9783030784508, págs. 227-249
- Idioma: inglés
- Texto completo no disponible (Saber más ...)
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Resumen
Timbilas are wooden xylophones finely manufactured and tuned by Chopi people from Mozambique. In the context of a research project concerned with historical Timbilas, we developed a workflow for the characterization and sound synthesis of Timbila bars using 3D scanning technology, reverse engineering and sound synthesis techniques. If the interest in 3D scanning is evident from the perspective of cultural heritage for documenting valuable objects without the need to make mechanical contact, the 3D data could also be used as inputs to computational methods for vibration and acoustic analysis. In this paper, we detail and apply the methodological framework to a real-life nine-bar Timbila, starting with the acquisition of the 3D data, moving to the finite element modeling and the modal computations, and ending with the building of a sound synthesis model based on physical modeling techniques. The proposed approach provides a non-invasive way of assessing the tuning of the bars and the reference pitch of the instrument, and also offers realistic synthetic sounds that can be exploited in combination with the produced high resolution rendering 3D model for applications in the fields of multimedia and virtual reality.
