| 1 Function | 2 Reference Model | 3 Input/Output Data |
| 4 SubAIMs | 5 JSON Metadata | 6 Profiles |
| 7 Reference Software | 8 Conformance Texting | 9 Performance Assessment |
1 Functions
The Audio Scene Description (OSD-ASD) AIM receives Audio Objects, the Descriptors of the Scene the Objects belong to, and their Space-Time information as inputs and produces the Descriptors of a Scene that is composed of Audio Objects and Scenes as output. The OSD-ASD AIM may also receive an Alert conveying information on potential anomalies in the input Audio Objects:
| Receives | Space-Time | of the input Objects having the same time base. |
| Audio Objects | individual Audio Objects. | |
| Scene Descriptors | Scene to Objects belong to. | |
| Integrates | Space-Time and 3D Model Object | with Scene Descriptors. |
| Produces | Audio Scene Descriptors | Output#1 of AIM |
| Alert | Output#2 of AIM signalling potential anomalies in Object. |
2 Reference Model
The Reference Architecture is depicted in Figure 1.
Figure 1 – The Audio Scene Description (OSD-ASD) AIM
3 Input/Output Data
Table 1 specifies the Input and Output Data of the Audio Scene Description (OSD-ASD) AIM. Links are to the Data Type specifications.
Table 1 – I/O Data of the Audio Scene Description (OSD-ASD) AIM
| Input | Description |
| Space-Time | Space-Time of input Objects. |
| Audio Objects | Input Objects. |
| Scene Descriptors | Input Scene Descriptors. |
| Output | Description |
| Audio Scene Descriptors | The output Audio Scene Descriptors. |
| Alert | Data signalling potential anomalies in Object. |
4 SubAIMs
No SubAIMs.
5 JSON Metadata
https://schemas.mpai.community/OSD/V1.4/AIMs/SceneDescription.json
6 Profiles
No profiles.
7 Reference Software
8 Conformance Testing
Table 2 provides the Conformance Testing Method for OSD-3SD AIM.
If a schema contains references to other schemas, conformance of data for the primary schema implies that any data referencing a secondary schema shall also validate against the relevant schema, if present and conform with the Qualifier, if present.
Table 2 – Conformance Testing Method for OSD-3SD AIM
| Receives | Space-Time | Shall validate against Space-Time schema. |
| Audio Objects | Shall validate against Audio Object schema. Media-specific Data shall conform with their Qualifiers. |
|
| Scene Descriptors | Shall validate against Scene Descriptors schema. | |
| Produces | Audio Scene Descriptors | Shall validate against Audio Scene Descriptors schema. |
| Alert | Shall validate against Alert schema. |
