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A model of harp plucking
Delphine Chadefaux1, Jean-Loïc Le Carrou, Benoît Fabre
1LAM-d'Alembert, UPMC Univ. Paris 06, UMR CNRS 7190, Paris, France.
The Journal of the Acoustical Society of America
|April 6, 2013
Summary
This study models harp plucking using finger mechanics, simulating string vibrations. The model accurately predicts sound quality based on player-controlled and intrinsic plucking parameters.
Area of Science:
- Acoustics and Musical Instrument Physics
- Computational Physics and Modeling
Background:
- Understanding the physics of musical instrument playing is crucial for sound synthesis and analysis.
- Harp plucking involves complex mechanical interactions between the finger and string, significantly influencing the resulting sound.
Purpose of the Study:
- To develop and validate a mechanical model of the harp plucking action.
- To investigate the influence of plucking parameters on harp string free oscillations and sound quality.
Main Methods:
- A two-phase model (sticking and slipping) was developed based on human finger mechanics.
- Model parameters were identified using experimental measurements of finger/string displacement.
- Validation was performed using a robotic finger, and a parametric study explored parameter influence on string oscillations.
Main Results:
- The model accurately simulates string response to finger motion, validated against experimental data.
- Plucking parameters were categorized into player-controlled and intrinsic factors.
- Both parameter groups significantly influence initial string vibration conditions and sound characteristics.
Conclusions:
- The developed model provides an accurate simulation of harp string plucking and vibration.
- The study elucidates how variations in plucking parameters contribute to a harpist's unique sound quality.
- This research offers insights into the physical basis of personal sound production in musical performance.
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