Chapter 1: Sound
Format | Figure | Description | |
---|---|---|---|
PNG | – | Air inside a balloon | |
PNG | 1.1 | Motion of a pressure wave in a tube | |
PNG | 1.2 | Sound production by a vibrating surface | |
PNG | 1.3 | Motion of a sound wave over time | |
PNG | 1.4 | A sound waveform | |
PNG | 1.5 | A sound wave traveling in a tube |
Chapter 2: Frequency and pitch
Format | Figure | Description | |
---|---|---|---|
PNG | 2.1 | Accelerating series of clicks | |
PNG | 2.2 | Flicker fusion rate | |
PNG | 2.3 | Trumpet waveform | |
PNG | 2.4 | Wavelength of a sound wave | |
PNG | 2.5 | Experiment to measure frequency | |
PNG | 2.6 | A simple one-stringed musical instrument | |
PNG | 2.7 | Frequencies of notes in a major chord | |
PNG | 2.8 | Frequencies of notes in a major scale | |
PNG | 2.9 | One octave of piano keys | |
PNG | 2.10 | The piano keyboard | |
PNG | 2.11 | Names and frequencies of notes on the piano keyboard | |
PNG | 2.12 | Frequencies of all notes on the piano | |
PNG | 2.13 | Pythagorean and equal temperament major scales | |
JPEG | 2.14 | Tuning fork |
Chapter 3: Amplitude and loudness
Format | Figure | Description | |
---|---|---|---|
PNG | 3.1 | Amplitude | |
PNG | 3.2 | Energy density in a sound wave | |
PNG | 3.3 | Sound wave blocked by a wall | |
PNG | 3.4 | Variation of sound intensity with distance | |
PNG | 3.5 | Curve of constant apparent loudness | |
PNG | 3.6 | Fletcher-Munson diagram | |
JPEG | – | Sound level meter | |
PNG | 3.7 | Frequency response of a type-A filter |
Chapter 4: Waveform and timbre
Format | Figure | Description | |
---|---|---|---|
PNG | 4.1 | Instrument waveforms | |
PNG | 4.2 | Standard waveforms | |
PNG | 4.3 | Adding waveforms | |
JPEG | – | Mixer | |
PNG | 4.5 | Sine wave | |
PNG | 4.6 | Making a sawtooth wave | |
PNG | – | Vase illusion | |
PNG | 4.7 | Making a violin waveform | |
PNG | 4.8 | Harmonics | |
PNG | – | Combination of sine waves (a) | |
PNG | – | Combination of sine waves (b) | |
PNG | – | Harmonic series | |
PNG | 4.9 | Harmonics in standard waveforms | |
PNG | 4.10 | Half-wave symmetry | |
PNG | 4.11 | Harmonics in instrument waveforms | |
PNG | 4.12 | Trumpet spectrum | |
PNG | 4.13 | Waveform with no fundamental | |
PNG | 4.14 | Smartphone frequency response | |
PNG | 4.15 | Cymbal waveform and spectrum | |
PNG | 4.16 | Changing phase | |
PNG | 4.17 | Phase cancellation |
Chapter 5: Human hearing and the ear
Format | Figure | Description | Credit | |
---|---|---|---|---|
PNG | 5.1 | Hearing range | ||
PNG | 5.2 | Limit of audibility | ||
PNG | 5.3 | The human ear | John Megahan | |
PNG | 5.4 | The middle ear | John Megahan | |
PNG | 5.5 | The cochlea | ||
PNG | 5.6 | Response of the basilar membrane | ||
PNG | 5.7 | Resonance | ||
PNG | 5.8 | Cochlea measurements | ||
PNG | 5.9 | Critical bandwidth | ||
PNG | – | Response at 20mm | ||
PNG | 5.10 | Neural spikes | M. Silveira and M. Roberts | |
PNG | 5.12 | Auditory roughness | ||
PNG | 5.13 | Beats | ||
PNG | – | Transition points | ||
PNG | – | C4/F4 clash | ||
PNG | 5.14 | Dissonance | ||
PNG | 5.15 | Dissonance experiments | ||
PNG | – | Harmonic series | ||
PNG | – | C4/G4 clash | ||
PNG | – | Sonata Pathetique | ||
PNG | 5.16 | Larger bandwidth | ||
PNG | 5.17 | ITD | ||
PNG | 5.18 | Time difference between ears |
Chapter 6: Room acoustics
Format | Figure | Description | |
---|---|---|---|
PNG | 6.1 | Rough surface | |
PNG | 6.2 | Impedance tube | |
PNG | 6.3 | Absorption and frequency | |
PNG | 6.4 | Diffusion of sound | |
PNG | 6.5 | Transmission of sound | |
PNG | 6.6 | Reverb decay | |
PNG | 6.7 | Volume element | |
JPEG | – | Acoustic ceiling tile | |
JPEG | – | Plush seating | |
PNG | 6.8 | Ideal reverberation | |
PNG | 6.9 | Reverberation radius | |
PNG | 6.10 | Boston floor plan | |
PNG | – | Dodechedron sound source | |
PNG | 6.12 | Strength factors | |
PNG | 6.13 | Reverb times | |
PNG | 6.14 | Strength factor curves | |
PNG | 6.15a | Square hall | |
PNG | 6.15b | Surround hall | |
PNG | 6.15c | Fan-shaped hall | |
PNG | 6.16 | Impulse response | |
PNG | 6.17 | Ceiling reflection | |
PNG | 6.18 | ITDG with distance | |
PNG | 6.19 | Sound reflector | |
JPEG | – | Sound reflectors on stage |
Chapter 7: Recording and reproduction
Format | Figure | Description | |
---|---|---|---|
PNG | 7.1 | The recording process | |
JPEG | – | Electrical plug | |
PNG | 7.2 | Sound waveform as an electrical signal | |
JPEG | – | Resistor | |
PNG | – | Resistor symbols | |
PNG | 7.3 | A simple circuit | |
PNG | 7.4 | A circuit with two resistors | |
PNG | 7.5 | Volume control | |
JPEG | – | Capacitor | |
PNG | 7.6 | A circuit using a capacitor | |
PNG | 7.7 | The effect of the circuit in Fig. 7.6 | |
PNG | 7.8 | A low-pass filter | |
PNG | 7.9 | The effect of the low-pass filter | |
PNG | 7.10 | Frequency response of the low-pass filter | |
PNG | 7.11 | Sound level decrease upon applying the low-pass filter | |
PNG | 7.12 | A 12 dB-per-octave low-pass filter | |
PNG | 7.13 | A high-pass filter | |
PNG | 7.14 | Frequency response of the high-pass filter | |
PNG | 7.15 | A band-pass filter | |
PNG | 7.16 | Frequency response of a band-pass filter | |
PNG | 7.17 | Transistor circuits | |
JPEG | – | Transistor | |
PNG | 7.18 | A loop of wire | |
PNG | 7.19 | A solenoid | |
PNG | 7.20 | The core of a solenoid | |
PNG | 7.21 | Pressure microphone | |
PNG | 7.22 | Pressure-gradient microphone | |
PNG | 7.23 | Effective sound pressure measured by a cardioid microphone | |
PNG | 7.24 | Bidirectional microphone | |
PNG | 7.25 | Polar plots | |
PNG | 7.26 | Frequency response of a pressure-gradient microphone | |
PNG | 7.27 | Frequency response of a microphone | |
PNG | 7.28 | Directionality of a cardioid microphone | |
PNG | 7.29 | Condenser microphone diagram | |
PNG | 7.30a | Circuit diagram for a condenser microphone | |
PNG | 7.30b | Circuit diagram for a condenser microphone | |
JPEG | – | Dynamic microphone photo | |
PNG | 7.31 | Dynamic microphone diagram | |
PNG | 7.32 | Carbon microphone | |
PNG | 7.33 | A tape recorder head | |
PNG | 7.34 | Vinyl LP diagram | |
JPEG | – | Loudspeaker | |
PNG | 7.35 | Dynamic loudspeaker | |
PNG | 7.36 | Output power of a loudspeaker | |
PNG | 7.37 | Sound leaving a speaker at an angle | |
PNG | 7.38 | Sound projected by a speaker | |
PNG | – | Circular speaker | |
PNG | 7.39 | Angular output of a circular loudspeaker | |
PNG | 7.40 | Speaker arrangement for surround sound | |
PNG | 7.41 | The groove in a stereo LP |
Chapter 8: Digital audio
Format | Figure | Description | |
---|---|---|---|
PNG | 8.1 | Digitization | |
PNG | 8.2 | Sampled sine waves | |
PNG | 8.3 | Anti-aliasing filter | |
PNG | 8.4 | Waveform reconstruction | |
PNG | 8.5 | Amplitudes | |
PNG | 8.6 | Digital recording | |
JPEG | 8.7 | Analog-to-digital converter | |
PNG | 8.8 | Dynamic compression | |
PNG | 8.10 | Periodic waveform | |
PNG | 8.11 | Decoding | |
PNG | 8.12 | Overlapping frames | |
PNG | 8.13 | Representing harmonics |
Chapter 9: Acoustic musical instruments
Format | Figure | Description | |
---|---|---|---|
PNG | – | Pendulum oscillation | |
PNG | 9.1 | Vibration of a stretched string | |
PNG | 9.2 | Volume of a string | |
JPEG | – | Guitar truss rod | |
PNG | 9.3 | Sound pressure produced by a moving string | |
PNG | 9.4 | Acoustic guitar | |
PNG | 9.5 | Forces acting on a string |
Chapter 10: String instruments
Format | Figure | Description | |
---|---|---|---|
PNG | 10.1 | Vibration modes | |
PNG | 10.2 | Second mode | |
PNG | 10.3 | Combinations of modes | |
PNG | 10.4 | Guitar waveforms | |
PNG | 10.5 | String harmonics | |
PNG | 10.6 | Plucked string | |
JPEG | 10.7 | String bending | |
PNG | 10.8 | String bend diagram | |
JPEG | 10.9 | Guitar bridge | |
PNG | 10.10 | Force on bridge | |
PNG | – | Ex. 10.6a | |
PNG | – | Ex. 10.6b | |
PNG | 10.12 | Resonances | |
PNG | 10.13 | Acoustic guitar response | |
PNG | 10.14 | Guitar sound output | |
PNG | 10.15 | Changing harmonics | |
PNG | 10.16 | Decay envelope | |
JPEG | – | Balalaika | |
JPEG | – | Alpine zither | |
JPEG | – | Harpsichord | |
PNG | 10.18 | Piano action | |
PNG | 10.19 | Piano action | |
PNG | 10.20 | Piano harmonics | |
PNG | 10.21 | Piano hammers | |
PNG | 10.22 | Loud and soft harmonics | |
JPEG | 10.23 | Piano strings | |
JPEG | 10.24 | Piano interior | |
PNG | 10.25 | Railsback curve | |
PNG | 10.26 | Piano diagram | |
PNG | 10.27 | Piano soundboard | |
PNG | 10.28 | Changing harmonics | |
PNG | 10.29 | Non-exponential decay | |
JPEG | – | Piano strings | |
JPEG | 10.30 | Square piano | |
JPEG | 10.31 | Upright piano | |
JPEG | – | Violin | |
PNG | 10.32 | Violin diagram | |
JPEG | 10.33 | Violin bow | |
PNG | – | Helmholtz motion | |
PNG | 10.34 | Helmholtz motion | |
PNG | 10.35 | Parabolas | |
PNG | – | Shape of string | |
PNG | 10.36 | Force at bridge | |
PNG | 10.37 | Violin interior | |
PNG | 10.39 | Violin admittance | |
PNG | 10.40 | Violin | |
PNG | 10.40 | Viola | |
PNG | 10.40 | Cello | |
PNG | 10.40 | Double bass | |
PNG | 10.41 | Primary resonances | |
JPEG | – | Viol | |
JPEG | 10.42 | Hurdy-gurdy |
Chapter 11: Wind and brass instruments
Format | Figure | Description | |
---|---|---|---|
PNG | 11.1 | Vibration of air in a pipe | |
PNG | 11.2 | Wavelength of a standing wave | |
PNG | 11.3 | Vibration of air in an open-ended pipe | |
PNG | 11.4 | Standing wave in an open pipe | |
PNG | – | Nodes and antinodes | |
PNG | 11.5 | Modes of vibration of a pipe | |
PNG | 11.6 | Frequency spectrum of a flute note | |
PNG | 11.8 | Vibration in a pipe closed at one end | |
PNG | 11.9 | Standing wave in a closed pipe | |
PNG | 11.10 | Modes in a closed pipe | |
PNG | 11.11 | Frequency spectrum of a clarinet | |
PNG | – | Square pipe | |
PNG | – | Conical pipe | |
PNG | 11.12 | Frequency spectrum of a saxophone | |
PNG | – | Bessel horn | |
JPEG | – | Bugle | |
PNG | – | Cone segment | |
PNG | 11.13 | Pressure in a conical pipe | |
PNG | 11.14 | Tone production in a recorder | |
PNG | 11.15 | Jet-drive mechanism | |
PNG | 11.16 | Bernoulli's principle | |
PNG | 11.17 | Geometry of air jet | |
PNG | 11.18 | Interior of an organ pipe | |
PNG | 11.19 | Types of organ pipes | |
JPEG | 11.20 | Pipe organ | |
JPEG | 11.21 | Organ console | |
PNG | 11.22 | Air velocity of an oscillating jet | |
PNG | 11.23 | Harmonics generated by an oscillating jet | |
PNG | – | Tone holes on a recorder | |
JPEG | – | Alto recorder | |
PNG | 11.24 | Sound pressure in a pipe with a tone hole | |
PNG | 11.25 | Fingerings on the recorder | |
PNG | 11.27 | Clarinet mouthpiece | |
PNG | 11.28 | Airflow in a reed instrument | |
PNG | – | Clarinet mouthpiece (labeled) | |
PNG | 11.30 | The double reed of an oboe | |
PNG | 11.31 | Spectra of oboe and saxophone | |
JPEG | – | Crumhorn | |
PNG | 11.32 | Straight bugle | |
PNG | 11.33 | Shapes of Bessel horns | |
PNG | 11.34 | Motion of the lips when playing trumpet | |
PNG | 11.35 | Slide trombone | |
PNG | 11.36 | Notes on the tenor trombone | |
PNG | 11.37 | Diagram of a trumpet | |
PNG | 11.38 | Notes on trumpet | |
PNG | 11.39 | Tuning on the trumpet | |
JPEG | – | Harmonica |
Chapter 12: The voice
Format | Figure | Description | Credit | |
---|---|---|---|---|
PNG | 12.1 | Vibration modes | John Megahan | |
PNG | 12.2 | Vocal ranges | ||
PNG | 12.3 | Harmonics of loud and soft notes | ||
PNG | 12.4 | Tongue placement | ||
PNG | 12.5 | Formants | ||
PNG | 12.6 | Creation of formants | ||
PNG | 12.7 | Formant frequencies | ||
PNG | – | Damped sine wave | ||
PNG | 12.8 | Broad resonance peaks |
Chapter 13: Percussion
Format | Figure | Description | |
---|---|---|---|
PNG | 13.2 | Xylophone bars | |
PNG | 13.3 | Vibration modes | |
PNG | 13.4 | Spectrum of xylophone and marimba | |
PNG | 13.5 | Bar segment | |
PNG | 13.6 | Graphical solution | |
PNG | 13.7 | Striking position | |
JPEG | 13.8 | Glockenspiel | |
PNG | 13.9 | Glockenspiel waveform | |
PNG | 13.11 | Tremolo mechanism | |
JPEG | 13.12 | Orchestral chimes | |
JPEG | – | Triangle | |
PNG | 13.13 | Church bell | |
PNG | 13.14 | Bell mode | |
PNG | – | Bell overtones | |
PNG | – | Six bell notes | |
PNG | – | Cambridge Quarters | |
PNG | – | Changes on six bells | |
JPEG | 13.16 | Carillon console | |
JPEG | – | Handbell | |
PNG | 13.18 | Steelpan arrangement | |
PNG | 13.20 | Two drum modes | |
PNG | 13.21 | 12 drum modes | |
PNG | 13.22 | 10 drum modes | |
PNG | – | Drum head element | |
PNG | 13.23 | Modes of a square drum | |
PNG | – | Polar coordinates | |
PNG | 13.24 | Bessel function | |
PNG | – | Isospectral drums | |
JPEG | – | Cymbal | |
PNG | 13.25 | Cymbal modes | |
PNG | 13.26 | Cymbal strokes | |
JPEG | – | Claves | |
JPEG | – | Castanets | |
JPEG | – | Gong | |
JPEG | – | Gamelan gongs | |
JPEG | – | Maracas | |
JPEG | – | Tambourine | |
JPEG | – | Guiro |
Chapter 14: Electric instruments and the electric guitar
Format | Figure | Description | Credit | |
---|---|---|---|---|
JPEG | – | Hollow-body guitar | ||
PNG | 14.1 | Guitar pickup | ||
PNG | 14.2 | Guitar diagram | ||
JPEG | 14.3 | Guitar amplifier | ||
PNG | 14.4 | Clipping and distortion | ||
PNG | – | Vacuum tube | ||
PNG | 14.5 | Harmonics of distorted note | ||
PNG | 14.6 | Distortion and signal strength | ||
JPEG | 14.7 | Amplifer controls | ||
PNG | 14.8 | Overdriven note | ||
PNG | 14.9 | Intermodulation distortion | ||
PNG | – | Power chord | ||
PNG | – | Power chord | ||
JPEG | – | Guitar effects | ||
PNG | 14.10 | Charge separation | ||
PNG | 14.11 | Piezoelectric effect | ||
PNG | 14.13 | Rhodes mechanism | ||
PNG | 14.14 | Rhodes modes | ||
PNG | 14.15 | Rhodes waveform | ||
PNG | 14.16 | Rhodes spectrum | ||
JPEG | 14.17 | Wurlitzer piano | Jeremy Edwards | |
PNG | 14.18 | Graphical solution | ||
PNG | 14.19 | Clavinet mechanism | ||
JPEG | 14.20 | Hammond organ | ||
PNG | 14.21 | Tonewheel | ||
PNG | 14.22 | Hammond waveform | ||
PNG | 14.23 | Hammond wiring | ||
PNG | 14.24 | Drawbars | ||
PNG | – | Gears | ||
PNG | – | Leslie cabinet | ||
PNG | 14.25 | Leslie mechanism | ||
PNG | 14.26 | Doppler effect |
Chapter 15: Electronic instruments and synthesizers
Format | Figure | Description | |
---|---|---|---|
PNG | 15.1 | Oscillator circuit | |
PNG | 15.2 | Oscillator waveform | |
JPEG | 15.3 | Theremin | |
JPEG | 15.4 | Moog synthesizer | |
PNG | 15.5 | Synthesizer schematic | |
PNG | 15.6 | Amplitude envelope | |
PNG | 15.7 | Example envelopes | |
JPEG | 15.8 | Prophet-10 synthesizer | |
JPEG | – | Yamaha DX7 | |
PNG | 15.9 | Frequency modulation | |
PNG | 15.10 | Frequency modulation | |
PNG | 15.11 | Frequency modulation | |
PNG | 15.12 | Frequency modulation | |
PNG | 15.13 | Keyboard zones | |
PNG | 15.14 | Transient and loop | |
PNG | 15.15 | D'Alembert's solution | |
PNG | 15.16 | Motion of a plucked string | |
PNG | 15.17 | Delay line with feedback | |
PNG | 15.18 | Feedback and attenuation | |
PNG | 15.19 | Karplus-Strong algorithm |