| AC-3 | Audio Compression 3 - Usually Dolby Digital 5.1 |
| DD | Dolby Digital |
| DTS | Digital Theater Systems |
| HDCD | High Definition Compatible Digital |
| MPEG | Moving Picture Experts Group |
| MP-3 | MPEG-1 Audio Layer 3 |
| MP-4 | MPEG-4 Part 14 |
| PCM | Pulse Code Modulation |
| SDDS | Sony Dynamic Digital System |
| THX | Tomlinson Holman eXperiment |