1      Definition

A Data Type describing the spatial arrangement of the Audio Objects and the Audio Scenes in an Audio Scene valid for a Duration of Time.

2      Functional Requirements

Compared to Audio Basic Scene Descriptors Audio Scene Descriptors includes also the IDs of Audio Objects and Audio Scenes.

3      Syntax


4      Semantics

Label Size Description
Header N1 Bytes
·       Standard 9 Bytes The characters “OSD-ASD-”
·       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.
AudioSceneDescriptorsID N5 Bytes Identifier of the Audio Scene Descriptors.
AudioObjectCount N6 Bytes # of Audio Objects in Audio Scene
Time N7 Bytes Data about Time
SceneAudioObjects[] N8 Bytes Set of Audio Objects in Scene
·       AudioObjectID N9 Bytes ID of Audio Object
·       AudioObjectSpaceTimeAttributes N10 Bytes Object’s Attributes of Space-Time
o  Space N11 Bytes Overrides Audio Object ID Spatial Attitude
o  Time N12 Bytes Attributes of Time
·       AudioObjectSceneAttributes[] N13 Bytes Set of Attributes of Audio Object ID
o  AudioObjectAttributeID N14 Bytes An Attribute ID of Audio Object ID
o  AudioObjectAttributeLength N15 Bytes The length in Bytes of Attribute Data
o  AudioObjectAttributeURI N16 Bytes The URI of Attribute Data
DescrMetadata N17 Bytes Descriptive Metadata