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Definition Functional Requirements Syntax Semantics Conformance Testing Performance Assessment

1      Definition

An Item including a series of Audio Scene Descriptors for a duration.

2      Functional Requirements

An Audio Event Descriptors instance must include:

  1. The Audio Event Descriptors Header
  2. The ID of the Audio Event Descriptors.
  3. The IDs or the Audio Scene Descriptors of the Audio Scene Descriptors included in the Audio Event instance.

An Audio Event Descriptors instance may include:

  1. The ID of a Virtual Space (M-Instance) to which it refers.
  2. The ID of a U-Environment to which it refers.
  3. The Space-Time information of the Audio Event instance.
  4. Information about this Audio Event instance.
  5. Descriptive Metadata.

3      Syntax

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

4      Semantics

Label

Description

Header

Audio Event Descriptors Header – Standard “OSD-AED-Vx.y”

MInstanceID

Identifier of the M-Instance.

UEnvironment

Identifier of the U-Environment.

AudioEventDescriptorsID

ID of this Audio Event Descriptors instance.

AudioEventDescriptorsTime

Space and Time of Audio Event Descriptors.

AudioEventDescriptorsSpaceTime

Space and Time of Audio Event Descriptors.

AudioSceneDescriptors[]

Set of Audio Scene Descriptors in the Audio Event.

– AudioSceneObjectSpaceTime

A set of Audio Scene Descriptors of the Audio Event.

DataXMData

Information on this Audio Event Descriptors instance.

DescrMetadata

Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with MPAI-OSD Audio Event Descriptors (OSD-AED) if:

  1. The Data validates against the Audio Event Descriptors’ JSON Schema.
  2. All Data in the Audio Event Descriptors’ JSON Schema
    1. Have the specified type
    2. Validate against their JSON Schemas
    3. Conform with their Data Qualifiers if present.

6     Performance Assessment