Video signals
Mechanical testing
Environmental testing
Codes
Recording tracks
Optical disks
Track pitch
Sound recording
Video recording
Moment of inertia
Bandwidth compression
Recording characteristics
Optical recording
Recording engineering
Optical disk recordings
Acoustic signals
Noise (spurious signals)
Recording systems
Recording media
Dimensions
Audiofrequencies
Data media
Labels
Optical properties of materials
Track speed
Testing conditions
Test equipment