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Wednesday, July 10 • 11:30 - 11:50
ACOUSTIC CHARACTERIZATION OF FLEXIBLE SINGLE-REED WOODWIND INSTRUMENTS VIA IN-VIVO MEASUREMENTS AND THEORY

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This paper presents a comparative experimental and computational study for acoustic characteri-zation of flexible single-reed woodwind instruments. Beam modeling used throughout the litera-ture widely disregards chord wise and coupled modes by only modeling primary flow direction ef-fects; modes corresponding to three-dimensional flow are considered in this work. The dynamic system is modeled as a Power Source-Generator-Resonator in order to characterize the acoustic re-sponse; in-vivo measurements from a saxophone and comparative simulations from models of varying fidelity are utilized. The player is modeled as the continuous power source, the flexible reed as the generator, and a pipe-like bore as the resonator. Two distinct material types commonly in use for reeds are included in the study, namely synthetic and cane. The reeds are characterized for their geometry, material type, and frequency response. The frequency response study involves beam, plate, and three-dimensional finite element comparisons. The acoustic response is charac-terized using an in-vivo measurement technique developed. A Selmer SBA tenor saxophone is used in data collection during the experiments. Future computational simulations, theoretical modeling, and designs must include reed flexibility effects in the cross-sectional plane in addition to those corresponding to the incoming flow direction. Keywords: musical acoustics, woodwind instrument, in-vivo acoustic measurements, and input impedance

Moderators
JD

Jean-Pierre Dalmont

Professor, Laboratoire d'Acoustique de l'Université du Mans (UMR CNRS 6613)

Authors

Wednesday July 10, 2019 11:30 - 11:50 EDT
Westmount 5
  T14 Musical acoustic, SS02 Tools for music instrum dsgn & …