THE SOUND GLOSSARY / 64 PLAIN-ENGLISH EXPLANATIONS

A word for
what you hear.

Terms become useful when they connect to an audible detail. Find a definition, try a small experiment, and follow the idea back into the music.

64 TERMS

A

Arpeggio
The notes of a chord presented successively rather than sounding only as a simultaneous block.
Attack
The initial development of a sound or envelope; on an amplitude envelope, it commonly controls the rise toward its first peak.
Automation
Recorded or programmed changes to a parameter over time, used to shape an arrangement or performance.

B

Bar
A grouping of beats defined by the musical meter, also called a measure.
Beat
A recurring unit in the musical timing framework; its duration depends on the tempo and the chosen counting level.
Beat grid
A software timing map that places beat and bar references over a recording for cueing, analysis or synchronization.
Beatmatching
Aligning the beat rates and positions of two recordings so their rhythmic pulses remain coordinated during an overlap.
Breakdown
An arrangement section that reduces or reconfigures established material to create contrast and redirect attention.

C

Clipping
A form of waveform limiting that occurs when a signal exceeds a stage’s available range, altering its shape.
Compression
Level-dependent dynamic processing that reduces gain according to a detector and chosen response settings.
Crossfader
A mixer control that changes the relative contribution of assigned audio channels along a shared travel range.
Cue point
A marked location used to start, prepare or identify a meaningful moment in an audio recording.
Cutoff
A frequency reference associated with a filter’s transition or characteristic region; its exact meaning depends on the filter type and design.

D

Decay
In a common ADSR envelope, the transition from the initial peak toward the sustain level.
Decay time
A description of how long a sound or reverberant field takes to diminish, with the exact measurement or control meaning depending on context.
Delay
An effect that produces an output after an interval relative to its input, often heard as one or more echoes.
Dynamics
Changes and differences in level or intensity within musical material, described at the scale relevant to the discussion.

E

Envelope
A control shape that changes over the life of an event, often used to shape level, filter position or pitch.
EQ
Equalization: changing the relative level of different frequency regions in a signal.

F

Feedback
The return of part of a system’s output into an earlier point, used in effects such as repeated delay echoes.
Fundamental
The base frequency associated with a periodic pitched tone, used as the reference for its harmonic series.

G

Gain
A scaling of signal amplitude at a particular point in an audio path.
Groove
The felt organization of rhythmic motion arising from event placement, emphasis, articulation and their relationships.

H

Harmonic
A frequency component at an integer multiple of a fundamental frequency.
Headroom
The available level margin before a specified limit or unwanted behavior, measured relative to a chosen reference in the signal path.

K

Key lock
A playback mode intended to preserve musical pitch while changing playback tempo, with quality and behavior depending on the processing tool.

L

Legato
A connected manner of note transition; in a synthesizer, overlapping note behavior may also control retriggering or glide.
LFO
A low-frequency oscillator commonly used as a repeating modulation source rather than a directly heard musical tone.
Loop
A selected span of material that repeats, used as a compositional pattern or a performance tool.
Loudness
The perceived magnitude of a sound, influenced by the signal, duration, spectrum and listening conditions.

M

Masking
A perceptual interaction in which one sound makes another harder to hear under the listening conditions.
Mono
A single-channel audio presentation; a mono sum combines stereo information into one channel according to the chosen mixing method.
Motif
A small recurring musical idea identifiable through a feature such as rhythm, contour or interval relationship.

O

Octave
An interval corresponding to a two-to-one frequency relationship; notes an octave apart share a note-name class in standard Western naming.
Oscillator
A source that produces a repeating signal, commonly used to generate a pitched tone in a synthesizer.

P

Phase
The position within a repeating cycle relative to a reference, relevant when periodic signals interact.
Phrase
A musical span that feels organized as a related gesture or statement, often extending across several bars.
Phrase mixing
Planning an overlap so larger musical events and section boundaries relate intentionally between recordings.
Polarity
The sign orientation of an audio signal; a polarity inversion multiplies the waveform by minus one.
Polymeter
The coexistence of repeating patterns organized around different metrical group lengths.
Portamento
A continuous pitch transition from one note toward another, often called glide on a synthesizer.
Pre-delay
An interval before the onset of a reverb response relative to the source signal.
Pulse
The recurring timing reference a listener follows through music, even when no instrument marks every occurrence.

R

Register
The relative pitch range occupied by a note, phrase or instrument, described broadly as lower, middle or higher.
Release
The stage or behavior after a note is released, often controlling how the sound fades following note-off.
Resonance
An emphasized or sustained response around a characteristic frequency region, commonly controlled near a synthesizer filter’s transition.
Reverb
A field of reflections and decay that suggests a surrounding space, produced acoustically or by an audio effect.

S

Sidechain
A control or detector path that can influence an audio processor, sometimes using a signal different from the material being processed.
Soundstage
The perceived spatial scene of a recording, including impressions of lateral placement, depth and relative scale.
Stereo image
The perceived lateral arrangement and distribution of sound across a two-channel presentation.
Sub-bass
A very low bass region or a sound used to provide a low foundation; exact frequency boundaries depend on context.
Subdivision
A division of a beat or another time span into smaller equal parts, providing positions for rhythmic detail.
Sustain
The level maintained during the sustained portion of a common ADSR envelope while the note remains held.
Swing
A timing treatment that changes the spacing between selected subdivisions, often creating alternating longer and shorter gaps.
Syncopation
An emphasis or event placement that plays against an established rhythmic expectation, often highlighting a weaker position or withholding a strong one.

T

Tempo
The rate of an underlying beat, commonly expressed in beats per minute, or BPM.
Tension
A sense of expectation or instability created by musical relationships and context, rather than a single measurable control.
Texture
The perceived surface and density of musical sound, shaped by layers, articulation and their changing relationships.
Timbre
The qualities that distinguish sounds beyond their nominal pitch and duration, including spectral and temporal behavior.
Transient
A brief, rapidly changing part of a sound, commonly associated with the onset of a percussive event.
Transition
The musical handover or change connecting sections, ideas or recordings over time.

V

Voicing
The placement and distribution of notes within a chord or harmonic texture, including their register and spacing.

W

Waveform
The shape of a signal over time, associated with its frequency content and audible character.
Wet/dry balance
The relationship between an effected signal and its unprocessed counterpart.

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