Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment
Definition
Audio Object Types (PGM-AOT): The semantic object-type labels assigned to the Audio Objects of the scene by Audio Instance Identification.
Functional Requirements
- Header: The Data shall have Header “PGM-AOT-V1.0”.
- Identification: The Data shall carry the identifiers of the M‑Instance, of the U‑Environment and of the session, and a unique identifier and a time (AudioObjectTypesID, AudioObjectTypesTime).
- Types: The Data shall include the object types assigned, one for each object of the scene.
- Metadata: The Data shall include DataXMData and may include DescrMetadata.
Syntax
https://schemas.mpai.community/PGM1/V1.0/data/AudioObjectTypes.json
Semantics
Table 1 – Semantics of Audio Object Types
| Label | Description |
| Header | Header of the Data Type, with the version. (required) |
| MInstance | Identifier of the M-Instance. (required) |
| UEnvironment | Identifier of the U-Environment. (required) |
| SessionID | Identifier of the A-User session. (required) |
| AudioObjectTypesID | Identifier of this instance. (required) |
| AudioObjectTypesTime | Time at which the Data was produced. (required) |
| Types | The object types assigned, one for each object of the scene. (required) |
| – AudioObjectID | Audio Object ID. (required) |
| – ObjectType | Label or class (URI) assigned. (required) |
| – Confidence | Confidence, 0 to 1. |
| – Basis | What the assignment rests on. Each one of: classification, domain, history. |
| DataXMData | Data Exchange Metadata of MPAI-PTF: provenance, authorisation, security and confidence of the Data. |
| DescrMetadata | Descriptive metadata (plain text, at most 2048 characters). |
Conformance Testing
Data conforms with Audio Object Types if it validates against the schema of Section 3. 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.
Performance Assessment
Not part of this specification.
