Chapter 1. Introduction: “Is that a real subject?”
Chapter 2. Underpinnings I: Good vibrations
2.1.1 Linearity and sine waves
2.2 Frequency analysis and modes
2.2.1 Fourier series
2.2.2 The undamped harmonic oscillator
2.2.3 Linearity for small vibration
2.2.4 Degenerate modes of a drum
2.2.5 Vibration frequency response
2.2.6 Frequency spectrum of a hammer tap
2.2.7 Vibration damping
Chapter 3. When does a structure become a musical instrument?
3.1 Harmonics and non-harmonics
3.1.1 Vibration of an ideal stretched string
3.2 Building blocks: beams, plates and shells
3.2.1 Bending beams and free-free modes
3.2.2 Synthesising percussion sounds
3.2.3 Plate vibration
3.2.4 The modal density of a vibrating plate
3.2.5 Rayleigh’s principle
3.3.1 Rayleigh’s principle and tuning a marimba bar
3.4 Church bells
3.5 Steel pans and the musical saw
3.5.1 Time-average holography
3.5.2 Waveguide reflection: the beam on an elastic foundation
3.6 Tuned drums
3.6.1 Vibration modes of a circular drum
UNDER CONSTRUCTION…
Chapter 4. Underpinnings II: Making waves
4.1 Sound waves
4.1.1 The wave equation
4.1.2 The sound field of an oscillating sphere
4.1.3 Energy, intensity and impedance
4.2.1 The Helmholtz resonator
4.2.2 Coupling of a Helmholtz resonator and a body mode
4.2.3 The Webster horn equation
4.2.4 Weinreich’s formula for modal density
4.3 Sound radiation
Chapter 5. Strings, mainly plucked
5.1 Stringed instrument overview
5.1.1 Averaging and the coherence function
5.1.2 Coupling a string to the instrument body
5.3 Signature modes and formants
5.3.1 The bridge hill: a resonator near the driving point
5.3.2 Skudrzyk’s method
5.4 Synthesising plucked string sounds
5.4.1 Motion of a plucked string as a modal sum
5.4.2 Waves on a string: d’Alembert’s solution
5.4.3 Natural frequencies of a stiff string
5.4.4 Energy loss in a string: internal damping
5.4.5 Energy loss in a string: air damping
5.4.6 Frequency responses for string synthesis
5.5 An extreme case: the banjo
5.5.1 The “square banjo” model