Abstract: Embodiments create an audio decoder which spatially renders one or more audio signals. The audio decoder receives a plurality of packets of different packet types, comprising one or more scene configuration packets providing a renderer configuration information defining a usage of scene objects and/or a usage of scene characteristics, and comprising one or more scene update packets defining a update of scene metadata for the rendering, and comprising one or more scene payload packets comprising definitions of one or more of the scene objects and/or definitions of one or more of the scene characteristics. The audio decoder selects definitions of one or more scene objects and/or definitions of one or more scene characteristics, which are in included in the scene payload packets, for the rendering in dependence on the renderer configuration information. The audio decoder updates one or more scene metadata in dependence on a content of the one or more scene update packets.

Abstract: Embodiments create an audio decoder which receives a plurality of packets of different packet types, having one or more scene configuration packets providing renderer configuration information defining a usage of scene objects and/or of scene characteristics, having one or more scene update packets defining a update of scene metadata for the rendering, and having one or more scene payload packets having definitions of one or more of the scene objects and/or of one or more of the scene characteristics; selects definitions of one or more scene objects and/or of one or more scene characteristics, included in the scene payload packets, for rendering in dependence on the renderer configuration information; and updates one or more scene metadata in dependence on a content of the one or more scene update packets. Further embodiments create encoders, methods and bitstreams.

Abstract: Embodiments create an audio decoder which spatially renders one or more audio signals; receives a plurality of packets of different packet types, having one or more scene configuration packets providing renderer configuration information defining a usage of scene objects and/or of scene characteristics, having one or more scene update packets defining a update of scene metadata for rendering, and having one or more scene payload packets having definitions of one or more of the scene objects and/or of one or more of the scene characteristics; selects definitions of one or more scene objects and/or definitions of one or more scene characteristics, included in the scene payload packets, for rendering in dependence on the renderer configuration information; and updates one or more scene metadata in dependence on a content of the one or more scene update packets. Further embodiments create encoders, methods and bitstreams.

Abstract: Embodiments create an audio decoder which spatially renders one or more audio signals. The audio decoder receives packets of different packet types, comprising one or more scene configuration packets providing a renderer configuration information defining a usage of scene objects and/or a usage of scene characteristics, and comprising one or more scene update packets defining a update of scene metadata for the rendering, and comprising one or more scene payload packets comprising definitions of one or more of the scene objects and/or definitions of one or more of the scene characteristics. The audio decoder selects definitions of one or more scene objects and/or definitions of one or more scene characteristics, which are in included in the scene payload packets, for the rendering in dependence on the renderer configuration information. The audio decoder updates one or more scene metadata in dependence on a content of the one or more scene update packets.

Abstract: An apparatus for synthesizing a spatially extended sound source including: an input interface for receiving a description of an audio scene, the description of the audio scene having spatially extended sound source data on the spatially extended sound source and modification data on a potentially modifying object, and for receiving a listener data; a sector identification processor for identifying a limited modified spatial sector for the spatially extended sound source within a rendering range for the listener, the rendering range for the listener being larger than the limited modified spatial sector, based on the spatially extended sound source data, the listener data, and the modification data; a target data calculator for calculating target rendering data from the one or more rendering data items belonging to the modified limited spatial sector; and an audio processor for processing an audio signal representing the spatially extended sound source using the target rendering data.

Abstract: An apparatus for rendering a virtual audio scene according to an embodiment is provided. One or more sound sources are emitting sound in the virtual audio scene. The apparatus has an input interface configured for receiving audio information, wherein the audio information has audio information for the virtual audio scene. Moreover, the apparatus has a renderer configured for generating, depending on the audio information for the virtual audio scene, one or more audio output channels for reproducing the virtual audio scene. If information on a current acoustic environment of the virtual audio scene is not available for the renderer, the renderer is configured to generate the one or more audio output channels for reproducing the virtual audio scene depending on information on a default acoustic environment.

Abstract: Embodiments according to the disclosure have a renderer for rendering, e.g. spatially rendering, an acoustic scene, wherein the renderer is configured to render, e.g. to reproduce, an acoustic impact of a diffuse sound (e.g. of a reverberation; e.g. of a late reverberation), which originates in a first spatial region (e.g. in a first Acoustically Homogenous Space, AHS; e.g. in a first room), in a second spatial region (e.g. in a second Acoustically Homogenous Space; e.g. in a second room; e.g. in a spatial region outside the first spatial region), using a spatially extended sound source, e.g. a SESS, e.g. as a spatially extended sound source, e.g. a spatially extended sound source which reproduces the diffuse sound, e.g. using a homogenous extended sound source algorithm, and also encoders, methods and bitstreams.

Abstract: An apparatus synthesizing a spatially extended sound source, includes: a storage for storing one or more rendering data items for different limited spatial sectors, wherein the different limited spatial sectors are located in a rendering range for a listener, wherein the one or more rendering data items for a limited spatial sector includes at least one of a left variance data item, a right variance data item, and a left-right covariance data item; a sector identification processor for identifying one or more limited spatial sectors for the spatially extended sound source within the rendering range for the listener based on spatially extended sound source data; a target data calculator for calculating target rendering data from the stored left variance data, the stored right variance data, or the stored covariance data; and an audio processor for processing an audio signal representing the spatially extended sound source using the target rendering data.

Abstract: An apparatus for synthesizing a spatially extended sound source (SESS), has: a storage for storing rendering data items for different elementary spatial sectors covering a rendering range for a listener; a sector identification processor for identifying, from the different elementary spatial sectors, a set of elementary spatial sectors belonging to the spatially extended sound source based on listener data and spatially extended sound source data; a target data calculator for calculating target rendering data from the rendering data items for the set of elementary spatial sectors; and an audio processor for processing an audio signal representing the spatially extended sound source using the target rendering data.