Function
Ref. Model
I/O Data
SubAIMs
JSON MData
Profiles
Ref. Software
Conformance
Performance
1 Functions
The Audio Scene Description (PGM‑ASD) AIM receives an Audio Object and produces the Audio Scene Descriptors describing it. In the PGM‑AUA context, the AIM operates under the control of an Audio CXT Directive issued by A‑User Control (through the CXT‑AUS Interface) and reports an Audio CXT Status on completion. The AIM references the Input and Output Data Types by name; their structure is specified by the respective Data Type definitions.
| Receives | Audio Object | Audio Objects in the Audio Scene. |
| Audio CXT Directive | Control directive from A‑User Control specifying scope, framing, and acquisition parameters for audio scene description. | |
| Produces | Audio Scene Descriptors | Descriptors of the Audio Scene. |
| Audio CXT Status | Status information describing the execution and outcome of Audio Scene Description processing. |
2 Reference Model
Figure 1 depicts the Reference Model of the Audio Scene Description (PGM‑ASD) AIM.
Figure 1 – The Audio Scene Description (PGM‑ASD) AIM
3 I/O Data
Table 1 specifies the Input and Output Data of the Audio Scene Description (PGM‑ASD) AIM.
| Input | Description |
|---|---|
| Audio Object | Audio Objects in the Audio Scene. |
| Audio CXT Directive | Control directive from A‑User Control specifying scope, framing, and acquisition parameters for audio scene description. |
| Output | Description |
| Audio Scene Descriptors | Descriptors of the Audio Scene. |
| Audio CXT Status | Status information describing the execution and outcome of Audio Scene Description processing. |
4 SubAIMs
No SubAIMs.
5 JSON Metadata
https://schemas.mpai.community/PGM1/V1.0/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 (PGM‑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.
| Receives | Audio Object | Shall validate against Audio Object schema. Audio Data shall conform with Audio Qualifier. |
| Audio CXT Directive | Shall validate against Audio CXT Directive schema. | |
| Produces | Audio Scene Descriptors | Shall validate against Audio Scene Descriptors schema. |
| Audio CXT Status | Shall validate against Audio CXT Status schema. |
9 Performance Assessment
Not part of this specification.
