Audio object processing based on spatial listener information

A client apparatus comprising:

• a processor;
• memory;
• and
• computer readable instructions stored in the memory that, when executed by the processor, cause the client apparatus to carry out operations including:
• determining spatial listener information, the spatial listener information including one or more listener positions and/or listener orientations of one or more listeners in a three dimensional (3D) space, the 3D space defining an audio space;
• receiving a manifest file comprising audio object metadata, including audio object identifiers for identifying audio objects, the audio objects being atomic audio objects and one or more aggregated audio objects, wherein an atomic audio object comprises audio data associated with a position in the audio space and an aggregated audio object comprises aggregated audio data of at least a part of the atomic audio objects defined in the manifest file, wherein each of the audio object identifiers comprises at least part of a URI;
• selecting one or more audio object identifiers one the basis of the spatial listener information, and on the basis of audio object position information defined in the manifest file, the audio object position information comprising positions in the audio space of the atomic audio objects defined in the manifest file;
• and,
• using the one or more selected audio object identifiers for requesting transmission of audio data and audio object metadata of the one or more selected audio objects to the client apparatus.

A non-transitory computer-readable medium for storing instructions that, when executed by a processor of a client apparatus, cause the client apparatus to carry out operations including:

• determining spatial listener information, the spatial listener information including one or more listener positions and/or listener orientations of one or more listeners in a three dimensional (3D) space, the 3D space defining an audio space;
• receiving a manifest file comprising audio object metadata, including audio object identifiers for identifying audio objects, the audio objects being atomic audio objects and one or more aggregated audio objects, wherein an atomic audio object comprises audio data associated with a position in the audio space and an aggregated audio object comprises aggregated audio data of at least a part of the atomic audio objects defined in the manifest file, wherein each of the audio object identifiers comprises at least part of a URI;
• selecting one or more audio object identifiers one the basis of the spatial listener information, and on the basis of audio object position information defined in the manifest file, the audio object position information comprising positions in the audio space of the atomic audio objects defined in the manifest file;
• and
• using the one or more selected audio object identifiers for requesting transmission of audio data and audio object metadata of the one or more selected audio objects to the client apparatus.