d
- D/A
- DAC
- Da capo
- D/A converter
- damping factor
- DAT
- data rate
- Deceptive cadence (DC)
- decibel (dB)
- Decrescendo
- de-esser
- degauss
- Degree inflection
- Delay
- delimiter
- Derived set
- Descending
- Deutsche Industrie Norm
- DFT
- Diapason
- Diapente
- Diatessaron
- Diatonic
- Diatonic pitch
- Diesis
- digital audio tape
- Digital audio tape (dat)
- digital delay
- digital signal processor
- Digital synthesis
- digital-to-analog
- Digital-to-analog converter
- Digital Video Disc
- Diminished interval
- Diminished scale
- Diminished triad
- Diminution
- DIN
- DIP switch
- Direct modulation
- Direct octaves or fifths
- disc geography
- Discrete Fourier Transform
- Disjunct
- Dissonance
- distortion
- dithering
- Divisions
- DLS
- DNS
- Dodecaphonic
- dolby noise reduction
- Dolby noise reduction types
- Dolce
- domain name system
- Dominant
- Donut
- Dotted note
- Double
- Double bar
- Double flat
- Double fugue
- Double neighbor group
- Double sharp
- downloadable sound
- DSP
- dub
- Dub
- Dur
- Dux
- DVD
- DVD Capacity
- DVD Configurations
- Dvorak keyboard
- Dyad
- dynamic microphone
- dynamic range
- Dynamic range