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Definition Functional Requirements Syntax Semantics Conformance Testing Performance Assessment

1      Definition

A Data Type describing the arrangement of the Multimodal Objects in a scene.

2      Functional Requirements

A Basic Audio Scene Geometry must include:

  1. The Basic Audio Scene Geometry Header
  2. The ID of the Basic Audio Scene Geometry.
  3. The ID of the Audio Objects in the Audio Scene.
  4. The Space-Time information of the Audio Objects inside the Audio Scene.

A Basic Audio Scene Geometry may include:

  1. The ID of a Virtual Space (M-Instance) where it is or it is intended to be located.
  2. The ID of a U-Environment where it is or it is intended to be located.
  3. The Qualifiers of the Basic Audio Object Data.
  4. The Space-Time information of the Basic Audio Scene.
  5. Information about this Basic Audio Scene Geometry.
  6. Descriptive Metadata.

3      Syntax

https://schemas.mpai.community/OSD/V1.5/data/BasicAudioSceneGeometry.json

4      Semantics

Label Description
Header Basic Multimodal Scene Geometry Header – Standard “OSD-BMG-Vx.y”
MInstanceID Identifier of the M-Instance.
UEnvironmentID Identifier of the U-Environment.
MultimodalSceneGeometryID ID of this Multimodal Scene Geometry instance.
MultimodalSceneGeometryTime Space and Time of Multimodal Scene Geometry.
MultimodalObjectCount Number of MultimodalObjects in Scene.
MultimodalSceneGeometrySpaceTime Space and Time of Multimodal Scene Geometry.
BasicMultimodalSceneObjects[] Set of Data related to MultimodalObjects in the Multimodal Scene.
– MultimodalSceneObjectQualifiers Qualifiers of the Multimodal Object in the Multimodal Scene.
– BasicMultimodalSceneObjectSpaceTime Space and Time of Multimodal Object in the Multimodal Scene.
DataXMData Information on this Basic Multimodal Scene Geometry instance.
DescrMetadata Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with Basic Multimodal Scene Geometry (OSD-BMG) if:

  1. The Data validates against the Basic Multimodal Scene Geometry’s JSON Schema.
  2. All Data in the Basic Multimodal Scene Geometry’s JSON Schema
    1. Have the specified type
    2. Validate against their JSON Schemas
    3. Conform with their Data Qualifiers.

6     Performance Assessment