| AAC | Advanced Audio Coding [engl.] Audio-Kompressionsverfahren |
| HEAAC | High Efficiency Advanced Audio Coder/Coding |
| AC | Audio Coding [Nr.] [engl.] Kompressionsverfahren |
| PAC | Perceptual Audio Coding |
| TAC | Transparent Audio Coding |
| EPAC | Enhanced Perceptual Audio Coding |
| ALS | Audio Lossless Coding [MPEG-4 ALS] [engl.] |
| AVC | Advanced Video Coding [engl.] |
| AAI | Advanced Audio Interface [engl.] Schnittstellenstandard/ Audio |
| A2DP | Advanced Audio Distribution Profile [engl.] Dient zur Übertragung von Stereo-Audio-Signalen per Streaming |
| RLC | Run Length Coding |
| CCV | C-bit Coding Violation [engl.] |
| LPC | Linear Predictive Coding |
| DOCS | Designation of Other Coding System |
| PCS | Physical Coding Signalling |
| VCL | Video Coding Layer |
| CDE | Coding System for Disorders of the Eye [engl.] Klassifizierung der Augenkrankheiten |
| FACS | Facial Action Coding System |
| FACT | Federation Automatic Coding Technologies |
| ATC | Adaptive Transform Coding [engl.] |
| SAC | Syntax-based Arithmetic Coding |
| VCEG | Video Coding Experts Group |
| ATRAC | Adaptive Transform Accoustic Coding [engl.] Bei MD angewendetes Audio-Kompressionsverfahren |
| ADRC | Adaptive Dynamic Range Coding [engl.] |
| EBCOT | Embedded Block Coding with Optimized Truncation |
| MUSICAM | Masking Universal Subband Integrated Coding and Multiplex |
| AOD | Audio on Demand |
| cda | CD-Audio-Track eine Dateiendung |
| AV | Audio-Video Signaleingang bzw. -ausgang, Funktion |
| DAR | Digital Audio Radio |
| DAT | Digital Audio Tape |
| DAM | Digital Audio Monitor |
| DAI | Digital Audio Interface |
| AMP | Audio MPEG Player |
| AF | Audio Frequency [engl.] Tonfrequenz [bis etwa 10 kHz] |
| AVC | Audio Visual Connection [IBM] |
| AI | Audio Interface [engl.] Schnittstelle für Audiodaten |
| DAD | Digital Audio Disk |
| DAC | Digital Audio Copy |
| DAB | Digital Audio Broadcasting Digitales Radio |
| WMA | Windows Media Audio |
| CAR | Compressed Audio Recording |
| au | Audio-Basic-File eine Dateiendung |
| AVA | Audio Visual Authoring [IBM] |
| DAE | Digital Audio Extraction |
| wav | Wave: Audio-Datei eine Dateiendung |
| SAT | Supervisory Audio Tone |
| HDA | High Definition Audio |
| SAP | Secure Audio Path |
| GAB | Group Audio Bridging |