A method and apparatus for efficient delivery for 6dof rendering

A method for generating an audio scene having at least two audio content sets, the method comprising:

• obtaining a media description comprising information identifying positions of audio sources within the audio scene associated with the at least two audio content sets;
• obtaining a listener position within the audio scene;
• determining for the at least two audio content sets a source representation level based on the positions of the audio sources associated with the at least two content sets and the listener position;
• retrieving encoded at least two audio content sets based on the source representation level, wherein the encoded at least two audio content sets comprise a first of the encoded at least two audio content sets encoded at a first of at least two representation levels and a second of the encoded at least two audio content sets encoded at a second of the at least two representation levels;
• and
• generating spatialized audio output based on the retrieved encoded at least two audio content sets.

An apparatus for generating an audio scene having at least two audio content sets, the apparatus comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed with the at least one processor, cause the apparatus at least to:
• obtain a media description comprising information identifying positions of audio sources within the audio scene associated with the at least two audio content sets;
• encode the at least two audio content sets such that the at least two audio content sets are configured to be output at at least two representation levels;
• and
• output for the audio scene encoded at least two audio content sets, wherein the output encoded at least two audio content sets comprises a first of the encoded at least two audio content sets encoded at a first of the at least two representation levels and a second first of the encoded at least two audio content sets encoded at a second of the at least two representation levels.

An apparatus for generating an audio scene having at least two audio content sets, the apparatus comprising:

• at least one processor;
• and
• at least one memory storing instructions that, when executed with the at least one processor, cause the apparatus at least to:
• obtain a media description comprising information identifying positions of audio sources within the audio scene associated with the at least two audio content sets;
• obtain listener position within the audio scene;
• determine for the at least two audio content sets a source representation level based on the positions of the audio sources associated with the at least two content sets and the listener position;
• retrieve encoded at least two audio content sets based on the source representation level, wherein the encoded at least two audio content sets comprise a first of the encoded at least two audio content sets encoded at a first of at least two representation levels and a second of the encoded at least two audio content sets encoded at a second of the at least two representation levels;
• and
• generate spatialized audio output based on the retrieved encoded at least two audio content sets.