Abstract
In this chapter, an overview of wind-instrument acoustics is provided as a theoretical foundation to design, build, and use grafted wind instruments. The generic wind instrument is described by a tone generator that is coupled to two adjacent resonators, the instrument’s body and the performer’s vocal tract. As a starting point, the acoustical behavior of a simple cylindrical resonator is examined, and the acoustical consequences of finger holes are discussed. The investigation continues with the introduction of the conical resonator, which describes the acoustical behavior of the saxophone body adequately but is acoustically more complex than the cylindrical resonator. In the following section, common tone generators for wind instruments are introduced and classified. The section includes a description of the acoustical behavior for the single reed, double reed, free reed, flute, and lip-valve instrument mechanisms. Afterward, the coupling between a tone generator and a resonator is addressed, which can only be described as a non-linear system. The chapter concludes with a description of the acoustical behavior of the adaptable vocal tract. Its acoustical importance is often underestimated when dealing with wind instruments.
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Notes
- 1.
In addition, the impedance describes phase relationships between the pressure and velocity of the oscillating air molecules in a sound wave, but phase considerations are beyond the scope of this book.
- 2.
For a standing wave, a pressure minimum would automatically require a velocity maximum at the same location. However particles cannot move at the closed end, and therefore this mode cannot build up.
- 3.
The saxophone adaptations to different tone generators will be discussed in great detail in Chap. 5.
- 4.
The cornett is a Renaissance brass instrument with a wooden conical resonator, finger holes, and a small brass mouthpiece—see Sect. 5.4 for details.
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Braasch, J. (2019). Acoustics of the Saxophone. In: Hyper-specializing in Saxophone Using Acoustical Insight and Deep Listening Skills. Current Research in Systematic Musicology, vol 6. Springer, Cham. https://doi.org/10.1007/978-3-030-15046-4_2
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DOI: https://doi.org/10.1007/978-3-030-15046-4_2
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