Definition
Functional Requirements
Syntax
Semantics
Conformance Testing
Performance Assessment
1 Definition
A Data Type including a collection of Basic Speech Objects.
A Speech Object can have a hierarchical structure where Speech Objects contain Basic Speech Objects and Speech Objects.
2 Functional Requirements
A Speech Object may include:
- ID of a Virtual Space (M-Instance) where it is or intended to be located.
- ID of the Speech Object.
- Space-Time information of the Speech Object.
- Basic Speech Object and Speech Objects included in the Speech Objects.
Note that.
- A Speech Object that does not include Sub-Scenes and only one Basic Speech Object is a Basic Speech Object.
- The Space-Time information of a Basic Speech Object and Speech Object included in a Speech Object may be superseded by the Space-Time information of the Speech Object containing them.
3 Syntax
https://schemas.mpai.community/OSD/V1.5/data/SpeechObject.json
4 Semantics
| Label | Description |
| Header | Speech Object Header – Standard “OSD-SPO-Vx.y” |
| – Standard-SpeechObject | The characters |
| – Version | Major version – 1 or 2 characters |
| – Dot-separator | The character “.” |
| – Subversion | Minor version – 1 or 2 characters |
| MInstanceID | Identifier of M-Instance. |
| SpeechObjectID | Identifier of the Speech Object. |
| SpeechObjectSpaceTime | Space-Time of Speech Object. |
| BasicSpeechObjectCount | Set of Parent Speech Objects. |
| BasicSpeechObjects[] | Set of Basic Speech Objects. |
| – SpaceTime | Space Time of a Basic Speech Object in the Speech Object. |
| – BasicSpeechObject | A Basic Speech Object in the Speech Object. |
| SpeechObjectCount | Number of Speech Objects. |
| SpeechObjects[] | Set of Speech Objects. |
| – SpaceTime | Space Time of a Speech Object in the Speech Object. |
| – SpeechObject | A Speech Object in the Speech Object |
| DataXMData | MPAI-PTF Data Exchange Metadata providing provenance, authorisation, legal, security, and confidence information associated with this Speech Object instance in a trusted data exchange context. |
| DescrMetadata | Human-readable descriptive metadata of the Speech Object instance (plain text, max 2048 characters). |
5 Conformance Testing
A Data instance conforms with Speech Object (OSD-SPO) if:
- The Data validates against the Speech Object JSON Schema.
- All Data in the Speech Object JSON Schema:
- Have the specified type.
- Validate against their JSON Schemas.
- Conform with their Data Qualifiers.
6 Performance Assessment
Not part of this specification.
