1     Definition 2     Functional Requirements 3     Syntax
4     Semantics 5    Conformance Testing 6     Performance Assessment

1      Definition

Data whose rendering is perceived by a hearing device or audible to a human with attached Qualifier.

2      Functional Requirements

An Audio Object includes:

  1. The ID of a Virtual Space (M-Instance) where it is or will be located.
  2. The ID of the Audio Object.
  3. The ID(s) of the Parent Object(s) supporting two cases:
    1. The Parent Object has spawned two (or more) Objects.
    2. Two (or more) Parent Objects have merged into one.
  4. The Space-Time information of all Parent Objects in the M-Instance.
  5. The Space-Time info of the Audio Object in the M-Instance.
  6. Audio Object Qualifier.
  7. The Audio Object length in Bytes.
  8. The Audio Object Data URI.

3      Syntax

https://schemas.mpai.community/CAE1/V2.2/data/AudioObject.json

4      Semantics

Label Size Description
Header N1 Bytes Audio Object Header
– Standard-AudioObject 9 Bytes The characters “CAE-AUO-V”
– Version N2 Bytes Major version – 1 or 2 characters
– Dot-separator 1 Byte The character “.”
– Subversion N3 Bytes Minor version – 1 or 2 characters
MInstanceID N4 Bytes Identifier of M-Instance.
AudioObjectID N5 Bytes Identifier of the Audio Object.
ParentAudioObjects N6 Bytes Identifier(s) of Parent Audio Objects.
AudioDataSpaceTime N7 Bytes Space-Time info of Audio Data.
AudioDataQualifier N8 Bytes Audio Data Qualifier.
AudioDataLength N9 Bytes Number of Bytes of Audio Data
AudioDataURI N10 Bytes URI of Data of Audio Data
DescrMetadata N11 Bytes Descriptive Metadata

5     Conformance Testing

A Data instance Conforms with CAE-USC V2.3 Audio Object (CAE-AUO) if:

  1. JSON Data validate against the Audio Object’s JSON Schema.
  2. All Data in the Audio Object’s JSON Schema
    1. Have the specified types.
    2. Validate against their JSON Schemas.
    3. Conform with their Data Qualifiers if present.

6     Performance Assessment