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

1 Functions

The Audio Motion and Proximity (PGM‑AMP) AI Module analyses the temporal and spatial dynamics of Audio Objects in an audio scene by

  • Determining relative motion between source and listener
  • Detecting motion cues such as frequency variation and intensity changes
  • Estimating proximity from acoustic cues (loudness, spectral attenuation, reverberation)
  • Producing Motion Flags and a Proximity Class characterising each Audio Object’s dynamics

The AMP AI Module operates as follows:

  1. Receives the Audio Scene Descriptors
  2. Extracts motion cues (frequency variation, intensity changes)
  3. Estimates proximity using loudness, spectral attenuation, and reverberation
  4. Classifies the motion and proximity condition of each Audio Object
  5. Outputs Motion Flags and a Proximity Class for use by downstream AI Modules

2 Reference Model

Figure 1 depicts the Reference Model of the Audio Motion and Proximity (PGM‑AMP) AIM.

Figure 1 – The Audio Motion and Proximity (PGM‑AMP) AIM

3 I/O Data

Table 1 specifies the Input and Output Data of the Audio Motion and Proximity (PGM‑AMP) AIM.

Table 1 – I/O Data of the Audio Motion and Proximity (PGM‑AMP) AIM

Input Description
Audio Scene Descriptors Description of the audio scene whose objects’ motion and proximity are analysed.
Audio CXT Directive Control directive specifying scope, depth, or policy constraints for motion and proximity analysis.
Audio Domain Response Domain‑specific knowledge supporting motion and proximity inference.
Audio Interaction History Response Prior interaction‑history content supporting temporal consistency across captures.
Output Description
Motion Flags Per‑object indicators of detected motion and its character (e.g. approaching, receding, static).
Proximity Class Per‑object proximity classification derived from acoustic cues (e.g. near, mid, far).
Audio CXT Status Status information describing the execution and outcome of Audio Motion and Proximity processing.
Audio Domain Request Query to Domain Access for domain‑specific knowledge.

4 SubAIMs

No SubAIMs.

5 JSON Metadata

https://schemas.mpai.community/PGM1/V1.0/AIMs/AudioMotionAndProximity.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 Motion and Proximity (PGM‑AMP) 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 Motion and Proximity (PGM‑AMP) AIM

Receives Audio Scene Descriptors Shall validate against Audio Scene Descriptors schema.
Audio CXT Directive Shall validate against Audio CXT Directive schema.
Audio Domain Response Shall validate against Audio Domain schema.
Audio Interaction History Response Shall validate against Interaction History schema.
Produces Motion Flags Shall validate against Motion Flags schema.
Proximity Class Shall validate against Proximity Class schema.
Audio CXT Status Shall validate against Audio CXT Status schema.
Audio Domain Request Shall validate against Audio Domain schema.

9 Performance Assessment

Not part of this specification.

Go to PGM-AUA V1.0 AI Modules