Apparatus, methods and computer programs for repositioning spatial audio streams

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:
• receive a plurality of spatial audio streams, wherein the spatial audio streams comprise one or more audio signals and associated spatial metadata;
• obtain repositioning information relating to at least one of the plurality of spatial audio streams;
• determine modified directions for at least a first plurality of spatial audio streams and a second plurality of spatial audio streams, wherein the modified directions are determined based on the obtained repositioning information;
• use the modified directions to reposition sound direction components of the spatial metadata;
• determine modified sound directionality parameters based on direct-to-total energy ratios and the obtained repositioning information
• use the modified direct-to-total energy ratios to reposition sound directionality components of the spatial metadata;
• and
• reposition the plurality of spatial audio streams based, at least partially, on the repositioning information, to reposition the sound direction components and the sound directionality components of the spatial metadata.

A method comprising:

• receiving a plurality of spatial audio streams wherein the spatial audio streams comprise one or more audio signals and associated spatial metadata, wherein the plurality of spatial audio streams comprise, at least, a first audio stream captured from a first audio scene and a second audio stream captured from a second audio scene, wherein the first audio scene is at least partially different from the second audio scene;
• obtaining repositioning information relating to at least one of the plurality of spatial audio streams;
• and
• repositioning the at least one of the plurality of spatial audio streams based on the repositioning information.

A non-transitory computer-readable medium comprising program instructions stored thereon for performing at least the following:

• receiving a plurality of spatial audio streams wherein the spatial audio streams comprise one or more audio signals and associated spatial metadata, wherein the plurality of spatial audio streams comprise, at least, a first audio stream captured from a first audio scene and a second audio stream captured from a second audio scene, wherein the first audio scene is at least partially different from the second audio scene;
• obtaining repositioning information relating to at least one of the plurality of spatial audio streams;
• and
• repositioning the at least one of plurality of the spatial audio streams based on the repositioning information.