Acoustics of Woodwind Instruments
Summary
The acoustics of woodwind instruments encompass the generation, propagation and radiation of sound within air-filled resonators shaped by cylindrical or conical bores. In single-reed and double-reed instruments, the interaction between the vibrating reed and the internal air column establishes standing waves at discrete resonance frequencies. The arrangement and dimensions of toneholes introduce a periodic lattice that governs the cutoff frequency, above which waves propagate through the lattice and influence timbre and projection. Key parameters such as blowing pressure, reed stiffness and bore inharmonicity determine regime transitions, playing thresholds and dynamic control. Advances in sensing, computational modelling and materials science are enabling precision design of mouthpieces and bore geometries, informed practice tools and digital synthesis algorithms that emulate authentic woodwind behaviour.
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Acoustics of Woodwind Instruments publication trend
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Technical terms
Acoustic impedance: Frequency-dependent opposition of the air column to sound propagation, combining inertial and resistive effects.
Cutoff frequency: Threshold above which acoustic waves propagate through the tonehole lattice rather than decaying evanescently.
Reed oscillation: Self-sustained vibration of a flexible reed element that modulates airflow into the bore.
Bifurcation: Point at which a small change in blowing pressure or system parameter leads to a qualitative shift in oscillation regime.
Resonance: Natural frequency at which standing waves form in the bore, defining registers and harmonic content.
Tonehole lattice: Periodic array of open holes along the bore that alters waveguiding properties and shapes radiated sound.
References
- Minimal blowing pressure allowing periodic oscillations in a simplified reed musical instrument model: Bouasse-Benade prescription assessed through numerical continuation. Acta Acustica (2020).
- On the tonehole lattice cutoff frequency of conical resonators: applications to the saxophone. Acta Acustica (2020).
- Investigating Clarinet Articulation Using a Physical Model and an Artificial Blowing Machine. Acta Acustica (2019).
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