University of Music and Performing Arts Vienna

0000-0001-8248-4405

cf3418d6-6cd3-4132-83cf-bd7077a048c3

Chaigne, Antoine

2024-05-28T16:34:41Z

2024-05-28T16:34:41Z

2016

A method is presented for reconstructing piano hammer forces through appropriate filtering of the measured string velocity. The filter design is based on the analysis of the pulses generated by the hammer blow and propagating along the string. In the five lowest octaves, the hammer force is reconstructed by considering two waves only: the incoming wave from the hammer and its first reflection at the front end. For the higher notes, four- or eight-wave schemes must be considered. The theory is validated on simulated string velocities by comparing imposed and reconstructed forces. The simulations are based on a nonlinear damped stiff string model previously developed by Chabassier, Chaigne, and Joly [J. Acoust. Soc. Am. 134(1), 648–665 (2013)]. The influence of absorption, dispersion, and amplitude of the string waves on the quality of the reconstruction is discussed. Finally, the method is applied to real piano strings. The measured string velocity is compared to the simulated velocity excited by the reconstructed force, showing a high degree of accuracy. A number of simulations are compared to simulated strings excited by a force derived from measurements of mass and acceleration of the hammer head. One application to an historic piano is also presented.

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10.1121/1.4965965

https://dspace.mdw.ac.at/handle/123456789/5461

en

Journal of the Acoustical Society of America

Vorhersagemodelle in der Klavierakustik

CC-BY-4.0

Musical instruments

Acceleration measurement

Vibrometer

Wave propagation

Signal processing

Transducers

Magnetic materials

Spectroscopy

Integral transforms

Partial differential equations

Reconstruction of piano hammer force from string velocity

text::journal::journal article

EDUC

Publication

Chaigne, Antoine: Reconstruction of piano hammer force from string velocity. In: Journal of the Acoustical Society of America 140 (2016). H. 5, S. 3504-3517.

erstveröffentlichte Beiträge in SCI, SSCI und A&HCI-Fachzeitschriften

Physik, Astronomie

103

1030

10002

2016

55295

Ja

wissenschaftlich

es handelt sich um keine internationale Co-Publikation

Ja, mdw wird im Kontext der Publikation genannt

veröffentlicht

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3517

140

3504

University of Music and Performing Arts Vienna