Abstract: There is disclosed renderer apparatus, comprising: a rendering unit configured to process an audio scene representation to be rendered and to receive at least one context-specific rule or parameter, the rendering unit being configured to generate a rendered audio signal from the audio scene representation conditioned by the at least one context-specific rule or parameter, a contextualization unit configured to receive and/or derive context-specific data, the contextualization unit being configured to provide the at least one context-specific rule or parameter to the rendering unit based on the context-specific data.

Abstract: The present application concerns early reflection processing concepts for auralization. Embodiments relate to apparatuses and methods for sound rendering considering early reflections and to apparatuses and methods for determining an early reflection pattern.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position and geometry in a space includes an interface for receiving a listener position; a projector for calculating a projection of a two-dimensional or three-dimensional hull associated with the spatially extended sound source onto a projection plane using the listener position, information on the geometry of the spatially extended sound source, and information on the position of the spatially extended sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the spatially extended sound source having two or more output signals, wherein the renderer is configured to use different sound signals for the different positions.

Abstract: Audio processor for performing audio rendering by generating rendering parameters, which determine a derivation of loudspeaker signals to be reproduced by a set of loudspeakers from an audio signal. The audio processor is configured to obtain a reverberation effect information and to perform a gain adjustment so as to determine, based on a listener position, gains for generating the loudspeaker signals for the loudspeakers from the audio signal. The audio processor is configured to use, depending on the reverberation effect information, in the gain adjustment, for at least one loudspeaker, a roll-off gain compensation function for mapping a listener-to-loudspeaker distance of the at least one loudspeaker onto a listener-to-loudspeaker-distance compensation gain for the at least one loudspeaker, for which a compensated roll-off gets monotonically shallower with increasing listener-to-loudspeaker distance.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position or orientation and geometry in a space has an interface for receiving a listener position. The apparatus having a projector for calculating a projection of a two- or three-dimensional hull associated with the sound source onto a projection plane using the listener position, information on the geometry of the sound source, and on the position of the sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the sound source having two or more output signals, configured to use different sound signals for the different positions.

Abstract: An apparatus for synthesizing a spatially extended sound source includes: a spatial information interface for receiving a spatial range indication indicating a limited spatial range for the spatially extended sound source within a maximum spatial range; a cue information provider for providing one or more cue information items in response to the limited spatial range; and an audio processor for processing an audio signal representing the spatially extended sound source using the one or more cue information items.

Abstract: The present application concerns early reflection processing concepts for auralization. Embodiments relate to apparatuses and methods for sound rendering considering early reflections and to apparatuses and methods for determining an early reflection pattern.

Abstract: An audio post-processor for post-processing an audio signal having a time-variable high frequency gain information as side information includes: a band extractor for extracting a high frequency band of the audio signal and a low frequency band of the audio signal; a high band processor for performing a time-variable modification of the high frequency band in accordance with the time-variable high frequency gain information to obtain a processed high frequency band; and a combiner for combining the processed high frequency band and the low frequency band. Furthermore, a pre-processor is illustrated.

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: The present application concerns early reflection processing concepts for auralization. Embodiments relate to apparatuses and methods for sound rendering considering early reflections and to apparatuses and methods for determining an early reflection pattern.

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: 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.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position and geometry in a space includes an interface for receiving a listener position; a projector for calculating a projection of a two-dimensional or three-dimensional hull associated with the spatially extended sound source onto a projection plane using the listener position, information on the geometry of the spatially extended sound source, and information on the position of the spatially extended sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the spatially extended sound source having two or more output signals, wherein the renderer is configured to use different sound signals for the different positions.

Abstract: Audio encoder for encoding audio input data to obtain audio output data includes an input interface for receiving a plurality of audio channels, a plurality of audio objects and metadata related to one or more of the plurality of audio objects; a mixer for mixing the plurality of objects and the plurality of channels to obtain a plurality of pre-mixed channels, each pre-mixed channel including audio data of a channel and audio data of at least one object; a core encoder for core encoding core encoder input data; and a metadata compressor for compressing the metadata related to the one or more of the plurality of audio objects, wherein the audio encoder is configured to operate in at least one mode of the group of two modes.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position and geometry in a space includes an interface for receiving a listener position; a projector for calculating a projection of a two-dimensional or three-dimensional hull associated with the spatially extended sound source onto a projection plane using the listener position, information on the geometry of the spatially extended sound source, and information on the position of the spatially extended sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the spatially extended sound source having two or more output signals, wherein the renderer is configured to use different sound signals for the different positions.

Abstract: An apparatus for decomposing an audio signal into a background component signal and a foreground component signal, has: a block generator for generating a time sequence of blocks of audio signal values; an audio signal analyzer for determining a characteristic of a current block of the audio signal and for determining a variability of the characteristic within a group of blocks having at least two blocks of the sequence of blocks; and a separator for separating the current block into a background portion and a foreground portion wherein the separator is configured to determine a separation threshold based on the variability and to separate the current block into the background component signal and the foreground component signal, when the characteristic of the current block is in a predetermined relation to the separation threshold.

Abstract: An apparatus for synthesizing a spatially extended sound source includes: a spatial information interface for receiving a spatial range indication indicating a limited spatial range for the spatially extended sound source within a maximum spatial range; a cue information provider for providing one or more cue information items in response to the limited spatial range; and an audio processor for processing an audio signal representing the spatially extended sound source using the one or more cue information items.

Abstract: An apparatus for reproducing a spatially extended sound source having a defined position or orientation and geometry in a space has an interface for receiving a listener position. The apparatus having a projector for calculating a projection of a two- or three-dimensional hull associated with the sound source onto a projection plane using the listener position, information on the geometry of the sound source, and on the position of the sound source; a sound position calculator for calculating positions of at least two sound sources for the spatially extended sound source using the projection plane; and a renderer for rendering the at least two sound sources at the positions to obtain a reproduction of the sound source having two or more output signals, configured to use different sound signals for the different positions.

Abstract: Audio encoder for encoding audio input data to obtain audio output data includes an input interface for receiving a plurality of audio channels, a plurality of audio objects and metadata related to one or more of the plurality of audio objects; a mixer for mixing the plurality of objects and the plurality of channels to obtain a plurality of pre-mixed channels, each pre-mixed channel including audio data of a channel and audio data of at least one object; a core encoder for core encoding core encoder input data; and a metadata compressor for compressing the metadata related to the one or more of the plurality of audio objects, wherein the audio encoder is configured to operate in at least one mode of the group of two modes.