Issue |
Acta Acust.
Volume 6, 2022
|
|
---|---|---|
Article Number | 30 | |
Number of page(s) | 12 | |
Section | Musical Acoustics | |
DOI | https://doi.org/10.1051/aacus/2022024 | |
Published online | 26 July 2022 |
Technical & Applied Article
Physically-based sound synthesis software for Computer-Aided-Design of piano soundboards
1
IMSIA, UMR 9219 CNRS-EDF-CEA-ENSTA Paris, Institut Polytechnique de Paris, Chemin de la Hunière, 91120 Palaiseau, France
2
Laboratoire de Mécanique des Solides, UMR 7649 École Polytechnique-Institut Polytechnique de Paris-CNRS, Rte de Saclay, 91120 Palaiseau, France
* Corresponding author: bnjmn.elie@gmail.com
Received:
24
November
2021
Accepted:
22
June
2022
The design of pianos is mainly based on empirical knowledge due to the lack of a simple tool that could predict sound changes induced by modifications of the geometry and/or the mechanical properties of the soundboard. We introduce the concept of Sound Computer-Aided Design through the framework of a program that is intended to simulate the acoustic results of virtual pianos. The calculation of the sound is split into four modules that compute respectively the modal basis of the stiffened soundboard, the string dynamics excited by the hammer, the soundboard dynamics excited by the string vibration, and the sound radiation. The exact resemblance between synthesis and natural sounds is not the primary purpose of the software. However, sound synthesis of real and modified pianos are used as reference tests to assess our main objective, namely to reflect faithfully structural modifications in the produced sound, and thus to make this tool helpful for both instrument makers and researchers of the musical acoustics community.
Key words: Piano acoustics / Musical instrument making / Mean bridge mobility / Tone decay
© The Author(s), Published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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