MPAI-OSD V1.5 AIM – Audio Scene Description

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Function
Ref. Model
I/O Data
SubAIMs
JSON MData
Profiles
Ref. Software
Conformance
Performance

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 composed of Audio Objects and Scenes. The OSD‑ASD AIM may also produce an Alert conveying information on potential anomalies in the input Audio Model Objects:

Receives	Space-Time	Space and Time of the Audio Scene.
	Audio Object	Audio Objects in the Audio Scene.
	Scene Descriptors	Scene Descriptors of the Audio Scene.
Produces	Audio Scene Descriptors	Descriptors of the Audio Scene.
	Alert	Alert information from the Audio Scene.

2 Reference Model

Figure 1 depicts the Reference Model of the Audio Scene Description (OSD-ASD) AIM.

Figure 1 – The Audio Scene Description (OSD‑ASD) AIM

3 I/O Data

Table 1 specifies the Input and Output Data of the Audio Scene Description (OSD-ASD) AIM.

Table 1 – I/O Data of the Audio Scene Description (OSD‑ASD) AIM

Input	Description
Space-Time	Space and Time of the Audio Scene.
Audio Object	Audio Objects in the Audio Scene.
Scene Descriptors	Scene Descriptors of the Audio Scene.
Output	Description
Audio Scene Descriptors	Descriptors of the Audio Scene.
Alert	Alert information from the Audio Scene.

4 SubAIMs

No SubAIMs.

5 JSON Metadata

https://schemas.mpai.community/OSD/V1.5/AIMs/AudioSceneDescription.json

6 Profiles

No Profiles.

7 Reference Software

Not part of this specification.

8 Conformance Testing

Table 2 provides the Conformance Testing Method for the Audio Scene Description (OSD-ASD) 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 the Audio Scene Description (OSD‑ASD) AIM

Receives	Space-Time	Shall validate against Space-Time schema.
	Audio Object	Shall validate against Audio Object schema.
	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.

9 Performance Assessment

Not part of this specification.

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