Audio Rendering with Spatial Metadata Interpolation

An 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 two or more spatial audio streams, wherein the two or more spatial audio streams respectively comprise at least one audio signal and at least one spatial metadata parameter, wherein the two or more spatial audio streams are respectively associated with a position;
• obtain the positions associated with at least two of the two or more spatial audio streams;
• obtain a listener position, wherein the listener position is configured to be tracked;
• generate at least one audio signal based, at least partially, on at least one of the two or more spatial audio streams, the positions, and the listener position;
• generate at least one modified spatial metadata parameter based, at least partially, on the at least one spatial metadata parameter comprised by the at least two spatial audio streams, the positions, and the listener position;
• and
• process the at least one audio signal based, at least partially, on the at least one modified spatial metadata parameter to generate a spatial audio output.

A method comprising:

• obtaining two or more spatial audio streams, wherein the two or more spatial audio streams respectively comprise at least one audio signal and at least one spatial metadata parameter, wherein the two or more spatial audio streams are respectively associated with a position;
• obtaining the positions associated with at least two of the two or more spatial audio streams;
• obtaining a listener position, wherein the listener position is configured to be tracked;
• generating at least one audio signal based, at least partially, on at least one of the two or more spatial audio streams, the positions, and the listener position;
• generating at least one modified spatial metadata parameter based, at least partially, on the at least one spatial metadata parameter comprised by the at least two spatial audio streams, the positions, and the listener position;
• and
• processing the at least one audio signal based, at least partially, on the at least one modified spatial metadata parameter to generate a spatial audio output.

An 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 at least one signal, wherein the at least one signal comprises one or more audio signals from respective ones of two or more capturing positions, wherein the two or more capturing positions are inside an audio scene;
• obtain at least one capturing position, wherein the at least one capturing position comprises one or more capturing positions of the two or more capturing positions;
• obtain at least one spatial metadata parameter, wherein the at least one spatial metadata parameter comprises one or more spatial metadata parameters associated with the respective ones of the two or more capturing positions;
• obtain a plurality of predefined listener positions;
• generate a plurality of modified spatial metadata parameters based, at least partially, on the at least one spatial metadata parameter, the at least one capturing position, and the plurality of predefined listener positions;
• and
• generate two or more spatial audio streams based, at least partially, on the at least one signal, the at least one capturing position, and the plurality of modified spatial metadata parameters.