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1. Technical Specification 2. Reference Software 3. Conformance Testing 4. Performance Assessment

1. Technical Specifications

Technical Specification: Context-based Audio Enhancement (MPAI-CAE ) – Six Degrees of Freedom (CAE-6DF) V1.o assumes that implementations will be based on Technical Specification: AI Framework (MPAI-AIF) V3.0 enabling dynamic configuration, initialisation, and control of AI Workflows (AIW) composed of interconnected AI Modules (AIM) in a standard AI Framework (AIF).

Table 1 displays the AIW specified by CAE-6DF V1.0. Each AI Workflow link takes to a dedicated page, which includes functions, reference model, I/O Data, Functions of AIMs, I/O Data of AIMs, and a table providing links to the AIW-related AIW, AIMs, and JSON metadata.

Table 1 – AIWs of CAE-6DF V1.0

Acronym Name JSON Acronym Name JSON
CAE-6EN 6DF Encoder File CAE-6DC 6DF Decoder File

2. Reference Software

As a rule, MPAI provides Reference Software implementing the AI Modules released with the BSD-3-Clause licence and the following disclaimers:

  1. The purpose of the Reference Software is to demonstrate a working Implementation of an AIW, not to provide a ready-to-use product.
  2. MPAI disclaims the suitability of the Software for any other purposes than those of the MPAI-OSD Standard, and does not guarantee that it offers the best performance and that it is secure.
  3. Users shall verify that they have the right to use any third-party software required by this Reference Software, e.g., by accepting the licences from third-party repositories.

2. Conformance Testing

An implementation of an AI Workflow conforms with CAE-6DF if it accepts as input and produces as output Data and/or Data Objects (Data of a Data Type and its Qualifier) conforming with those specified or referenced by CAE-6DF.

The Conformance of an instance of a Data is to be expressed by a sentence like “Data validates against the Data Type Schema”. This means that:

  • Any Data Sub-Type is as indicated in the Qualifier.
  • The Data Format is indicated by the Qualifier.
  • Any File and/or Stream have the Formats indicated by the Qualifier.
  • Any Attribute of the Data is of the type or validates against the Schema specified in the Qualifier.

The method to Test the Conformance of a Data or Data Object instance is specified in the Data Types chapter.

3. Performance Assessment

Performance is a multidimensional entity because it can have various connotations. Therefore, the Performance Assessment Specification should provide methods to measure how well an AIW performs its function, using a metric that depends on the nature of the function, such as:

  1. Quality: the Performance of a 6DF Encoder AIW can measure represents a sound field.

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