Absolute Pitch: See Perfect Pitch.

Absorption

Absorption Coefficient

Accelerometer: See Transducer.

Acoasma

Acoustic

Acoustic Design: See Soundscape Design.

Acoustic Ecology: See Soundscape Ecology.

Acoustic Feedback

Acoustic Horizon

Acoustician

Acoustic Impedance

Acoustic Profile: See Acoustic Space.

Acoustic Radiation

Acoustics

Acoustic Shadow: See Sound Shadow.

Acoustic Space

Acoustic Trauma

Actuality: See Oral History.

Adaptation

Additive Synthesis: See Fourier Synthesis, Sound Synthesis.

Air Conduction: See Bone Conduction, Conductive Hearing Loss.

Allophone

Alternating Current

Ambience 

Ambient Noise: See Ambience 

Ambient Noise Level

Amplification

Amplifier

Amplitude

Amplitude Modulation

Anacusis: See Hearing Loss

Analog-To-Digital Converter (ADC): See Digital Recording.

Anechoic Chamber

Antinode: See Standing Waves.

Aperiodic: See Inharmonic , Periodic.

Architectural Acoustics: See Acoustics.

Articulation Index

Atmospheric Pressure: See Appendix B.

Attack

Attenuation

Attenuator

Audio

Audiocentric

Audio Frequency

Audio Signal: See Audio.

Audio Spectrum: See Audio Frequency, Spectrum

Audiogram

Audiologist

Audiology

Audiometer

Audiometry

Auditory

Auditory Nerve: See Cochlea, Ear, Inner Ear.

Augmented (interval): See Interval.

Aural

Aural Fatigue: See Adaptation, Threshold Shift.

Aural Harmonics

Aural History: See Oral History.

Auricle

Aurist

Azimuth

Background Music: See Moozak.

Background Noise

Backing: See Emulsion.

Baffle

Band

Band-Pass or Band-Reject: See Filter.

Bandwidth

Bar: See Appendix B, Rhythm

Basilar Membrane

Bass

Beat: See Metronome, Rhythm, Tempo.

Beat Frequency: See Beats.

Beats

Bel: See Decibel.

Binaural Beats: See Beats

Binaural Hearing

Binaural Recording

Blend

Blumlein Microphone Technique: See Stereophonic.

Boilermaker's Disease

Bone Conduction

Bone Conduction Hearing Level

Broad Band Noise

Brownian Motion: See Gaussian Noise.

Bulk Eraser

Cancellation

Canyon Effect

Cardioid: See Directivity.

Carrier

Cassette (tape): See Tape Recording.

Cent: See Equal Temperament, Appendix B and Appendix C.

Centre Frequency

Channel

Chopping: See Switch.

Chord: See Harmony.

Chorus Effect or Choral Effect: See Blend, Volume

Chroma: See Pitch.

Chronic Threshold Shift: See Threshold Shift.

Clairaudience

Classical Studio Technique: See Sound Synthesis.

Click

Clipping: See Peak Clipping.

Coating: See Emulsion.

Cochlea

Cochlear Implant: See: Sensory-Neural Hearing Loss.

Cocktail Party Effect 

Coloured Noise: See White Noise.

Comb Filter

Combination Tones

Comma (Pythagorean): See Pythagorean Scale

Communication

Community Noise Equivalent Level

Compensation: See Equalization.

Complex Tone

Composite Noise Rating

Compression

Computer (Sound) Synthesis: See Sound Synthesis.

Concert Pitch

Condensation: See Compression.

Conductive Hearing Loss

Cone of Confusion: See Binaural Hearing.

Consonance

Consonant

Constant Q Filter: See Filter.

Constructive Interference: See Interference.

Continuous Spectrum: See Spectrum.

Control Voltage: See Direct Current, Sound Synthesizer.

Conversion: See Digital Recording, Sound Synthesis, Transducer.

Corti Organ: See Organ of Corti.

Coupling: See Amplification, Soundboard.

Critical Band

Cross-Fade

Crosstalk

Cue

Cut-Off: See Filter.

Cycle

Cycle per Second (cps, c/s): See Frequency, Appendix B.

Damage-Risk Criteria

Damp

Day-Night Equivalent Noise Level: See Equivalent Energy Level.

Dead Air: See Silence.

Dead Room

Dead Spot: See Cancellation, Diffusion, Interference, Standing Waves.

Deafness: See Hearing Loss

Decay

Decay Time

Decibel

Degauss

Demodulation

Destructive Interference: See Cancellation, Interference.

Diaphragm

Dichotic

Difference Tone

Differential Threshold

Diffraction

Diffuse Sound Field 

Diffusion

Digital Audio Tape (DAT): See Magnetic Tape.

Digital Recording

Digital Signal Processing (DSP): See Sound Synthesizer.

Digital Sound Synthesis: See Sound Synthesis.

Digital-To-Analog Converter (DAC): See Sound Synthesis.

Diminished (interval): See Interval.

Diotic: See Binaural Hearing.

Diphthong: See Vowel.

Diplacusis

Direct Current

Directivity

Disappearing Sound

Discrete Channeling: See Separation.

Dissonance

Distortion

Divergence Loss: See Sound Transmission Loss.

Domains: See Emulsion.

Doppler Effect

Drone

Dropout

Dubbing

Duty Cycle: See Pulse.

Dynamic Range

Dynamics

Ear

Ear Cleaning

Eardrum

Earwitness

Echo

Echo Chamber

Echo Density: See Reverberation.

Echolocation

Editing: See Montage, Splice.

Effective Perceived Noise Level

Effective Voltage or Power: See Root Mean Square.

Eigenton

Electroacoustic

Electronic Music

Emulsion

Enclosure

Envelope

Equalization

Equalizer: See Equalization.

Equal Loudness Contours

Equal Temperament

Equivalent Energy Level

Expander: See Compression.

Exposure Level: See Equivalent Energy Level.

Fade

Fader

Fatigue of Hearing: See Adaptation, Threshold Shift.

Feedback

Fidelity

Field Pattern: See Directivity.

Fifth

Filter

First Generation: See Dubbing.

Flanging: See Phasing

Flat

Flat Line Sound: See Stationary Sound.

Fletcher-Munson Curves: See Equal Loudness Contours.

Flutter

Foldover: See Sound Synthesis.

Foley: See Sound Effect.

Forced Oscillation: See Oscillation.

Formant

Fourier Analysis

Fourier Coefficient: See Fourier Theorem.

Fourier Synthesis

Fourier Theorem

Fourier Transform: See Fourier Analysis.

Fourth

Free Field

Frequency

Frequency Distortion: See Distortion.

Frequency Domain: See Spectrum.

Frequency Modulation

Frequency Response

Fundamental

Gain

Gate: See Compression.

Gaussian Noise

Generation: See Dubbing.

Generator

Geometric Spreading: See Sound Propagation.

Glissando

Grain

Granular Synthesis or Granulation: See Grain.

Gramophone

Graphic Level Recorder: See Level Recorder.

Graphophone

Ground Absorption or Ground Effect: See Sound Propagation, section 3.

Haas Effect: See Precedence Effect.

Habituation: See Adaptation.

Hair Cells: See Organ of Corti, Volley Theory.

Harmonic

Harmonic Distortion: See Distortion.

Harmonic Series

Harmony

Head-Related Transfer Function (HRTF): See Binaural Hearing.

Headroom: See VU Meter.

Hearing Level

Hearing Loss

Helmholtz Resonator

Hertz (Hz): See Frequency, Appendix B.

Heterodyne

Hi-Fi

Hiss

Homophony: See Polyphony.

Hum

Hum Note: See Fundamental.

Hyperacusis

Impact Insulation Class

Impact-Noise Analyser: See Sound Analyser.

Impact Sound

Impulse Sound: See Impact Sound, Pulse.

Incidence

Infrasonic

Inharmonic

In-Head Localization: See Pan.

Inner Ear

Intensity

Intensity Level

Interference

Intermodulation Distortion: See Distortion.

Internal Dynamics

Interval

Intonation

Inverse Fourier Transform: See Fourier Synthesis.

Inverse-Square Law

IPS: See Magnetic Tape, Appendix A.

Isobel

Isometric: See Rhythm.

Jet Pause

Just Noticeable Difference (jnd): See Differential Threshold.

Just Tuning

Keynote

Kilocycle: See Frequency, Appendix B.

Kilohertz (kHz): See Frequency, Appendix B.

Kunstkopf

Law of Superposition

Law of Uncertainty

Leader Tape: See Emulsion, Magnetic Tape.

Leakage: See Crosstalk.

Level: See Ambient Noise Level, Decibel, Loudness Level, Noise Level, Sound Level, Sound Power Level, Sound Pressure Level.

Level Recorder

Limiter

Linear

Line Source: See Sound Propagation.

Line Spectrum: See Spectrum.

Listening Walk: See Soundwalk.

Localization: See Binaural Hearing.

Lo-Fi

Logarithmic: See Linear, Decibel.

Longitudinal Wave: See Sound Wave.

Loop: See Tape Loop, Standing Waves.

Loudness

Loudness Level

Loudness Level Contours: See Equal Loudness Contours, Phon.

Loudspeaker

Magnetic Tape

Magnetic Wire

Magnetophon: See Tape Recording.

Mask

Mass

Megacycle: See Frequency, Appendix B.

Megahertz (mHz, MHz): See Frequency, Appendix B.

Mel

Message

Metacommunication

Metalanguage

Metric Rhythm: See Rhythm.

Metronome

Microphone

Microtone: See Scale, Quarter Tone.

Middle Ear

Minimum Audible Angle

Minimum Audible Field (MAF): See Threshold of Hearing.

Missing Fundamental: See Fundamental.

Mix

Mode: See: Scale , Vibration.

Modulated Carrier

Modulation

Modulation Depth

Modulation Synthesis: See Sound Synthesis.

Molecular Relaxation: See Sound Propagation, section 2a.

Monaural Hearing

Monophonic

Monophony: See Polyphony.

Montage

Moozak

Morpheme

Morphology

Multi-Track Recording: See Channel, Stereophonic.

Musique Concrète

Muzak: See Moozak.

Nab

Narrow Band Noise

Network

Node: See Standing Waves.

Noise

Noise Abatement: See Damage-Risk Criteria, Noise, Noise Pollution.

Noise and Number Index

Noise Criterion

Noise Exposure Forecast

Noise Gate: See Compression.

Noise Induced Permanent Threshold Shift (NIPTS): See Threshold Shift.

Noise Isolation Class

Noise Level

Noise Pollution

Noise Pollution Level

Noise Rating

Noise Reduction Coefficient

Noise Reduction Factor

Noise-Reduction System: See Dynamic Range, Tape Recording.

Non-Linear: See Linear.

Note

Noy

Occupational Deafness

Octave

Octophonic: See Quadraphonic, Stereophonic.

Omni-Directional Microphone: See Directivity.

Onset Transients: See Envelope , Transient.

Oral History

Organ of Corti

OSHA

Oscillation

Oscillator

Oscilloscope

Ossicles

Otology

Outer Ear: See Ear, Auricle, Pinna.

Over-Modulation: See Modulation, Peak Clipping.

Overtone

Pan

Pan-Pot: See Pan.

Parabolic Reflector

Parameter

Partial

Particle Velocity

Passband: See Filter.

Peak Clipping

Peak Level

Peak Programme Meter: See VU Meter.

Peak Voltage: See Root Mean Square.

Pentatonic: See Scale.

Perceived Noise Level

Percentage of Modulation: See Modulation, VU Meter.

Perfect (interval): See Interval.

Perfect Pitch

Period

Periodic

Periodicity

Periodicity Pitch: See Fundamental.

Periphony: See Stereophonic.

Permanent Threshold Shift (PTS): See Threshold Shift.

Phantom Image: See Panning.

Phase

Phase Difference

Phase-Shift

Phasing

Phon

Phone

Phoneme

Phonemics

Phonetics

Phonograph

Phonology

Pink Noise: See White Noise.

Pinna

Pitch

Plosive: See Vocal Stop.

PNdB: See Perceived Noise Level.

Point of Articulation: See Rhythm.

Point Source: See Simple Sound Source, Sound Propagation.

Polar Pattern: See Directivity.

Polyphony

Potentiometer

Power

Precedence Effect

Preferred Noise Criterion

Presbycusis

Presence

Pressure: See Sound Pressure.

Print-Through

Program Signal: See Modulated Carrier, Modulation, Radio Spectrum.

Projicience

Propagation

Psychoacoustics

Psychophysics: See Psychoacoustics.

Pulse

Punctuation: See Rhythm.

Pure Tone: See Simple Tone, Sine Tone.

Pythagorean Scale

Q (of a Filter): See Filter.

Quadraphonic

Quality

Quantum (Sound): See Grain.

Quarter Tone

Radiation: See Acoustic Radiation.

Radio Spectrum

Random Noise

Range

Rarefaction

Rate Changer: See Tempophone.

Rate of Decay

Recall: See Oral History.

Receiver

Recruitment

Rectangular Wave: See Square Wave.

Rectification

Redundancy

Reflection

Reflection Coefficient

Refraction

Residue

Resonance

Resonance Curve

Resonator

Response

Reverberant Field: See Diffuse Sound Field.

Reverberation

Reverberation Chamber: See Echo Chamber.

Reverberation Time: See Reverberation.

Rhythm

RIAA

Ring Modulation: See Modulation.

Rise Time

Roll-Off: See Filter.

Root: See Fundamental.

Root Mean Square

Rumble

Running Commentary: See Oral History.

Rustle Noise

SABIN: See Absorption, Appendix B.

Sacred Noise

Sampler or Sampling: See Digital Recording, Sound Synthesizer.

Sampling Rate: See Digital Recording, Sound Synthesis.

Sawtooth Wave

Scale

Scattering: See Sound Propagation, section 2.

Schizophonia

Scrubbing: See Cue.

Second

Second-Order Beats: See Beats.

Semicircular Canals

Semitone: See Equal Temperament, Flat, Interval, Just Tuning, Pythagorean Scale, Sharp.

Sensory-Neural Hearing Loss

Separation

Seventh

Sharp

Shell-Shock: See Impact Sound.

Shelving: See Equalization.

Shock Wave: See Sonic Boom.

Shotgun Microphone

Sibilance

Sideband

Signal

Signal-to-Noise Ratio

Signal Transfer: See Print-Through.

Silence

Simple Sound Source

Simple Tone

Simple Harmonic Motion

Sine Tone

Sine Wave

Singing Formant: See Formant.

Sinusoidal Wave: See Simple Harmonic Motion, Sine Wave.

Sixth

Slap Echoes: See Echo, Parabolic Reflector.

Sociocusis

Sonar

Sone

Sonic

Sonic Boom

Sonic Environment: See Soundscape.

Sonic Intrusion: See Sound Intrusion.

Sonics

Soniferous Garden

Sonogram (Sonagram): See Spectrograph.

Sonograph (Sonagraph): See Spectrograph.

Sonography

Sonology: See Sound.

Sonority

Sonorous

Sound

Sound Analyser

Soundboard

Sound Effect

Sound Event

Sound Field: See Diffuse Sound Field , Free Field.

Sound Horizon: See Acoustic Horizon.

Sounding Board: See Soundboard.

Sound Insulation

Sound Intensity

Sound Intrusion

Sound Level

Sound Level Meter

Soundmaking: See Soundwalk.

Soundmark

Sound Mirror: See Tape Recorder.

Sound Object

Sound-on-Sound

Sound Phobia

Sound Pollution

Sound Power

Sound Power Level

Sound Pressure

Sound Pressure Function: See Waveform.

Sound Pressure Level

Sound Profile: See Acoustic Space.

Soundproof

Sound Propagation

Sound Romance

Soundscape

Soundscape Design

Soundscape Ecology

Soundscape Project: See World Soundscape Project.

Sound Shadow

Sound Signal

Sound Synthesis

Sound Synthesizer

Sound Taboo: See Sound Phobia.

Sound Transmission Class

Sound Transmission Coefficient

Sound Transmission Loss

Soundwalk

Sound Wave

Spectral Envelope: See Spectrum.

Spectrogram: See Spectrograph.

Spectrograph

Spectrum

Speech Communication Criterion

Speech Interference Level

Speed of Sound

Spill

Splice

Square Wave

Standing Waves

Stationary Sound

Stationary State

Stationary Waves: See Standing Waves.

Steady State: See Stationary State.

Steady State Sound: See Drone, Hum, Stationary Sound.

Stereophonic

Stochastic Process

Strike Note: See Fundamental.

Subaudio: See Infrasonic.

Subharmonic

Subsonic

Subtractive Synthesis: See Sound Synthesis.

Summation Tone

Superposition, Principle of: See Law of Superposition.

Supersonic

Supersonic Transport

Switch

Sympathetic Vibration

Syncopation: See Rhythm.

Synthesis: See Sound Synthesis.

Synthesizer: See Sound Synthesizer.

Tape Echo: See Echo.

Tape Feedback: See Feedback.

Tape Loop

Tape Music

Tape Recorder

Tape Recording

Temperament

Tempered Tuning

Tempo

Tempophone

Temporary Threshold Shift (TTS): See Threshold Shift.

Tenth-Octave Band Analyser: See Sound Analyser.

Thermal Noise: See Gaussian Noise.

Third

Third-Octave Band Analyser: See Sound Analyser, Spectrum chart.

Threshold of Hearing

Threshold of Pain

Threshold Shift

Timbre

Time Domain: See Spectrum, Waveform.

Time Stretching: See: Granulation , Tempophone.

Tinnitus

Tone

Tone Control: See Equalization.

Tone-Height: See Pitch.

Track: See Channel, Magnetic Tape.

Traffic Noise Index

Transducer

Transient

Transient Distortion: See Distortion.

Transient Response

Transmission

Transmission Loss (TL): See Sound Transmission Loss.

Transverse Wave: See Oscilloscope, Sound Wave.

Treble

Tremolo

Triangle Wave

Trill

Tritone: See Interval.

Tuning

Tweeter

Tympanum

Typology

UHF

Ultrasonic

Ultrasound: See Ultrasonic.

Unison

Unvoiced: See Consonant, Vowel.

Vasoconstriction: See Threshold Shift.

Velocity of Sound: See Speed of Sound.

VHF

Vibration

Vibration Analyser: See Sound Analyser.

Vibrato

Visible Speech: See Spectrograph.

Vocal Cords: See Consonant, Vowel.

Vocal Stop

Vocal Tract: See Formant, Resonator, Vowel.

Voiced Or Voiceless: See Consonant, Vowel.

Volley Theory

Voltage Control: See Direct Current, Sound Synthesizer.

Volume

Volume Unit (VU): See VU Meter.

Vowel

VU Meter

Wave: See Sound Wave.

Wave-Analyser: See Sound Analyser.

Waveform

Wavelength

Wave Propagation: See Sound Propagation.

Weighting Network: See Sound Level Meter.

White Noise

Wideband Noise: See Broad Band Noise

Wind Screen

Wire Recorder: See Magnetic Wire.

Woofer

World Soundscape Project

Wow

Zero Level VU

Zeitdehner: See Tempophone.

Appendix A: List of Abbreviations and Symbols

Appendix B: Units of Measurement

Appendix C: Comparison of Tuning Systems

Appendix D: Conversion From Power Or Voltage Ratios To Decibels

Appendix E: Examples of Critical Bandwidths

Appendix F: Loudness Summation