Segment-wise adjustment of spatial audio signal to different playback loudspeaker setup

A method for adapting a spatial audio signal for an original loudspeaker setup to a playback loudspeaker setup that differs from the original loudspeaker setup, wherein the spatial audio signal comprises a plurality of channels, each channel signal being a loudspeaker channel corresponding to a loudspeaker of the original loudspeaker setup, the method comprising:

• grouping the plurality of channel signals into a plurality of original segments, wherein at least two neighboring channel signals are grouped into an original segment, and wherein a loudspeaker is assigned to a first original segment and to a second original segment;
• decomposing the at least two channel signals in the first original segment into at least one direct sound component and at least one ambience component, and determining a direction of arrival of the at least one direct sound component for the first original segment, and decomposing the at least two channel signals in the second original segment into at least one direct sound component and at least one ambience component for the second original segment, and determining a direction of arrival of the at least one direct sound component for the second original segment;
• adjusting the at least one direct sound component of the first original segment using the playback loudspeaker setup information for the first playback segment to obtain at least one adjusted direct sound component so that a perceived direction of arrival of the at least one direct sound component in the playback loudspeaker setup is identical to the direction of arrival of the first original segment or closer to the direction of arrival of the at least one direct sound component of the first original segment compared to a situation in which no adjusting of the at least one direct sound component has taken place, and adjusting the at least one direct sound component of the second original segment using the playback loudspeaker setup information for the second playback segment to obtain at least one further adjusted direct sound component so that a perceived direction of arrival of the at least one direct sound component in the playback loudspeaker setup is identical to the direction of arrival of the second original segment or closer to the direction of arrival of the at least one direct sound component of the second original segment compared to a situation in which no adjusting of the at least one direct sound component has taken place;
• and
• combining the at least one adjusted direct sound component and the ambience components or modified ambience components of a first playback segment and the at least one further adjusted direct sound components and the ambience components or modified ambience components of a second playback segment.

A non-transitory storage medium having stored thereon a computer program comprising a program code for performing, when being executed on a computer, a method for adapting a spatial audio signal for an original loudspeaker setup to a playback loudspeaker setup that differs from the original loudspeaker setup, wherein the spatial audio signal comprises a plurality of channels, each channel signal being a loudspeaker channel corresponding to a loudspeaker of the original loudspeaker setup, the method comprising:

• grouping the plurality of channel signals into a plurality of original segments, wherein at least two neighboring channel signals are grouped into an original segment, and wherein a loudspeaker is assigned to a first original segment and to a second original segment;
• decomposing the at least two channel signals in the first original segment into at least one direct sound component and at least one ambience component, and determining a direction of arrival of the at least one direct sound component for the first original segment, and decomposing the at least two channel signals in the second original segment into at least one direct sound component and at least one ambience component for the second original segment, and determining a direction of arrival of the at least one direct sound component for the second original segment;
• adjusting the at least one direct sound component of the first original segment using the playback loudspeaker setup information for the first playback segment to obtain at least one adjusted direct sound component so that a perceived direction of arrival of the at least one direct sound component in the playback loudspeaker setup is identical to the direction of arrival of the first original segment or closer to the direction of arrival of the at least one direct sound component of the first original segment compared to a situation in which no adjusting of the at least one direct sound component has taken place, and adjusting the at least one direct sound component of the second original segment using the playback loudspeaker setup information for the second playback segment to obtain at least one further adjusted direct sound component so that a perceived direction of arrival of the at least one direct sound component in the playback loudspeaker setup is identical to the direction of arrival of the second original segment or closer to the direction of arrival of the at least one direct sound component of the second original segment compared to a situation in which no adjusting of the at least one direct sound component has taken place;
• and
• combining the at least one adjusted direct sound component and the ambience components or modified ambience components of a first playback segment and the at least one further adjusted direct sound components and the ambience components or modified ambience components of a second playback segment.