1 Version
V1.0
2 Functions
The MPAI-HMC AI Workflow:
- Receives a sequence of either:
- Audio-visual scenes that include the communicating Entity interpreted as Audio-Visual Scene Geometries and associated Audio-Visual Objects.
- Communication Items containing an Avatar representing the Machine communicating with the Entity and Context information as supported by the Portable Avatar Format.
 
- Understands the information emitted by the Entity considering its Context.
- Produces and emits multimodal responses to the communicating Entity either by generating a Communication Item or an Audio-Visual Scene both of which may include a representation of itself.
3 Reference Model
Figure 1 depicts the MPAI-HMC Reference Architecture.

Figure 1 – The Human and Machine Communication AIM
4 I/O Data
The Input and Output Data of the Human and Machine Communication AIW is specified in Table 1.
Table 1 – Input/Output Data of MPAI-HMC
| Input | Description | 
| Portable Avatar | A Communication Item emitted by the communicating Entity. | 
| Input Selector 
 | Selector containing data that determines: 1. Whether the communicating Entity uses Speech or Text as input. 2. Which language is used as input. 3. The target Language in translation. | 
| Input Text | Text Object generated by the communicating Entity as information additional to or in lieu of Speech Object. | 
| Input Audio | The audio scene captured by the Machine. | 
| Input Visual | The visual scene captured by the Machine. | 
| Output | Description | 
| Portable Avatar | The Communication Item produced by the Machine. | 
| Output Audio | The rendered audio corresponding to the Audio in the Communication Item. | 
| Output Visual | The rendered visual corresponding to the visual in the Communication Item. | 
| Output Text | The Text in the Communication Item. | 
5 SubAIMs
| AV Scene Integration and Description | 
| Audio-Visual Scene Description | 
| Entity Context Understanding | 
| Entity Dialogue Processing | 
| Personal Status Display | 
| Audio-Visual Scene Rendering | 
6 JSON Metadata
https://schemas.mpai.community/HMC/V1.0/AIWs/HumanAndMachineCommunication.json
