# Decode Audio Packets

PhysicalFunction

In-Flight Entertainment System > In-Flight Entertainment System > Physical Architecture > Physical Functions > Root Physical Function > IFE System > Manage Audio Video Diffusion > Display Video and Play Audio > Play Audio on Seat TV > Decode Audio Packets

This function consists in decoding the audio packets typically compressed using an audio codec such as MP3 or AAC.This function receives metadata allowing the synchronization with the video decoding performed separately.

## Incoming Functional Exchanges

Exchange | Source | Description | Allocated Exchange Items
--- | --- | --- | ---
Audio Packets | Receive and Bufferize Audio Packets |  | Audio Packets
Sync Metadata | Synchronize Audio Video |  |

## Outgoing Functional Exchanges

Exchange | Target | Description | Allocated Exchange Items
--- | --- | --- | ---
Decoded Audio Stream | Convert Audio |  | Audio Packets

## Diagrams displaying "Decode Audio Packets"

- [PAB] [BUILD] All PCs, PFs, FEs
- [PAB] [BUILD] Template
- [PFBD] All Physical Functions
- [PDFB] [CTX] Play Audio on Seat TV
- [PAB] Focus on SVDU Audio Video Playing
- [PAB] [CTX] Start Playing VOD Movie FC