Abstract: There is inter alia disclosed an apparatus for spatial audio encoding comprising: means for determining a first spatial audio parameter of a frequency sub band of one or more audio signals and a second spatial audio parameter of the frequency sub band of the one or more audio signals; and means for combining the first spatial audio parameter and the second spatial audio parameter to provide a combined spatial audio parameter for the frequency sub band.

Abstract: There is inter alia disclosed an apparatus for spatial audio encoding comprising: means for determining at least two of a type of spatial audio parameter for one or more audio signals, wherein a first of the type of spatial audio parameter is associated with a first group of samples in a domain of the one or more audio signals and a second of the type of spatial audio parameter is associated with a second group of samples in the domain of the one or more audio signals; and means for merging the first of the type of spatial audio parameter and the second of the type of spatial audio parameter into a merged spatial audio parameter.

Abstract: An apparatus configured to: receive, at least, at least one first audio channel and at least one second audio channel, wherein at least one of the at least one first audio channel or the at least one second audio channel comprises spatial audio configured to enable immersive audio communication; determine a format of at least one of the at least one first or the at least one second audio channel to identify which of the received at least one first audio channel and the at least one second audio channel comprises the spatial audio; process the identified at least one audio channel with at least one parameter dependent on the determined format; and render the processed at least one audio channel and another of the at least one first audio channel or the at least one second audio channel.

Abstract: An apparatus for immersive audio communication including circuitry configured to: receive at least a first audio data stream and a second audio data stream, wherein at least one of the first and second audio stream includes a spatial audio stream to enable immersive audio during a communication; determine a type of each of the first and second audio streams to identify which of the received first and second audio data streams the spatial audio stream; process the second audio data stream with at least one parameter dependent on the determined type; and render the first audio data stream and the processed second audio data stream.

Abstract: An apparatus configured to: obtain one or more values for one or more acoustic parameters for a plurality of positions within a sound space; generate an image representing the sound space, wherein a value for a pixel of the image is associated with an acoustic parameter at a position, of the plurality of positions, corresponding to the pixel such that data in the image comprises information configured to enable the sound space to be rendered; code the image to obtain a coded image; and provide the coded image and metadata associated with the image.

Abstract: An apparatus performs; determining, for at least one first audio signal of an audio signal format, at least one metadata parameter; determining for at least one further audio signal of a further audio signal format; at least one further metadata parameter; controlling combining of the at least one metadata parameter with the at least one further metadata parameter to generate a combined metadata, wherein the combined metadata is configured to be associated with a combined audio signal formed from the at least one first audio signal and the at least one further audio signal in such a way that the combined metadata includes at least one spatial audio parameter.

Abstract: The application relates to an apparatus, method and computer program for representing a sound space for use in mediated reality applications. The apparatus including circuitry configured for: obtaining one or more values for one or more acoustic parameters for a plurality of locations within a sound space; and generating an image file representing the sound space where an intensity value for a pixel represents the value for an acoustic parameter at a location corresponding to the pixel such that the data in the image file enables the sound space to be rendered.

Abstract: An apparatus including circuitry configured for determining for at least one first audio signal of an audio signal format, at least one metadata parameter; determining for at least one further audio signal of a further audio signal format; at least one further metadata parameter; controlling combining of the at least one metadata parameter with the at least one further metadata parameter to generate a combined metadata, wherein the combined metadata is configured to be associated with a combined audio signal formed from the at least one first audio signal and the at least one further audio signal in such a way that the combined metadata includes at least one spatial audio parameter.

Abstract: An apparatus comprising means for: obtaining values for parameters representing an audio signal, the values comprising at least one directional value and at least one energy ratio value for each sub-band of at least two sub-bands of a frame of the audio signal; determining a penalty value for each sub-band; and on a sub-band by sub-band basis: selecting a sub-band based on the penalty value; and encoding, for the selected sub-band, the at least one directional value for each sub-band; distributing any bits allocated for encoding the selected sub-band at least one directional value which are not used in the encoding of the at least one directional value to succeeding selections of sub-bands.

Abstract: An apparatus comprising means for: capturing an audio scene using multiple microphones; determining that the captured audio scene has unacceptable detected noise; in dependence upon determining that the captured audio scene has unacceptable detected noise, searching both different sets of one or more microphones and different physical rotation angles of the microphones to find a combination of a first set of one or more microphones and a first physical rotation angle of the microphones that captures the audio scene with acceptable detected noise; and controlling the physical rotation angle of the microphones to be the first physical rotation angle of the microphones and capturing the audio scene using the combination of the first set of one or more microphones and the first physical rotation angle of the microphones.

Abstract: There is inter alia disclosed an apparatus for spatial audio encoding comprising: means for determining a first spatial audio parameter of a frequency sub band of one or more audio signals and a second spatial audio parameter of the frequency sub band of the one or more audio signals; and means for combining the first spatial audio parameter and the second spatial audio parameter to provide a combined spatial audio parameter for the frequency sub band.

Abstract: There is inter alia disclosed an apparatus for audio encoding configured to compare an audio parameter against a threshold value and against a value dependent on a previous quantized audio parameter; calculate a quantized audio parameter as the previous quantized audio parameter increased by a predetermined value; and calculate the quantized audio parameter as the previous quantized audio parameter multiplied by a factor value.

Abstract: An apparatus configured to: receive at least two audio signals; determine at least one parameter associated with at least two audio signals, wherein the at least one parameter is configured to represent an ambiance energy distribution of the at least two audio signals, wherein the at least one parameter is associated with, at least, a respective energy of ambient sound of the at least two audio signals in a plurality of directions; determine at least one directional parameter; and provide, using at least one of the at least two audio signals, at least one output audio signal based on, at least, the at least one directional parameter and the at least one parameter, wherein the at least one parameter controls ambiance energy distribution of the at least one output signal according to the ambience energy distribution of the at least two audio signals in the plurality of directions.

Abstract: An apparatus comprising means configured to: obtain at least one parameter value (106) associated with at least two time-frequency parts of at least one audio signal (104); obtain at least one similarity value based on the at least one parameter value (106) associated with the at least two time-frequency parts of at least one audio signal (104); determine at least one group of time-frequency parts from the at least two time-frequency parts of at least one audio signal (104), the at least one group of time-frequency parts based on the at least one similarity value; and generate for the at least one group of time-frequency parts at least one associated group parameter (204), the at least one group parameter (204) based on the at least one parameter value (106) associated with the time-frequency parts.

Abstract: There is inter alia disclosed an apparatus for spatial audio encoding comprising: means for determining at least two of a type of spatial audio parameter for one or more audio signals, wherein a first of the type of spatial audio parameter is associated with a first group of samples in a domain of the one or more audio signals and a second of the type of spatial audio parameter is associated with a second group of samples in the domain of the one or more audio signals; and means for merging the first of the type of spatial audio parameter and the second of the type of spatial audio parameter into a merged spatial audio parameter.

Abstract: An apparatus comprising means for: receiving values for sub-bands of a frame of an audio signal, the values comprising at least one azimuth value, at least one elevation value and at least one energy ratio value for each sub-band; determining an allocation of first number of bits to encode the values of the frame, wherein the first number of bits are fixed; encoding the at least one energy ratio value for a frame based on a defined allocation of a second number of bits from the first number of bits; encoding the at least one azimuth value and/or at least one elevation value of the frame based on a defined allocation of a third number of bits from the first number of bits, wherein the third number of bits is variably distributed on a sub-band-by-sub-band basis.

Abstract: There is inter alia disclosed an apparatus for spatial audio encoding comprising: means for analysing a plurality of spatial audio parameter sets associated with a frame of one or more audio signals, wherein the plurality of spatial audio parameter sets are associated with a plurality of subframes, a plurality of frequency sub bands and a plurality of sound source directions for the frame of the one or more audio signals; and means for determining from the analysis of the plurality of spatial audio parameter sets at least one spatial audio parameter set for subframes of the frame of the one or more audio signals.

Abstract: An apparatus for immersive audio communication including circuitry configured to: receive at least a first audio data stream and a second audio data stream, wherein at least one of the first and second audio stream includes a spatial audio stream to enable immersive audio during a communication; determine a type of each of the first and second audio streams to identify which of the received first and second audio data streams the spatial audio stream; process the second audio data stream with at least one parameter dependent on the determined type; and render the first audio data stream and the processed second audio data stream.

Abstract: An apparatus including means for: receiving multi-channel audio signals; identifying at least one audio signal to separate from the multi-channel audio signals; separating, based on the identified at least one audio signal, the multiple audio signals into at least a first sub-set of audio signals and a second sub-set of audio signals, wherein the first sub-set includes the identified at least one audio signal and the second sub-set includes the remaining audio signals of the received multi-channel audio signals; analyzing the remaining audio signals of the second sub-set of audio signals to determine one or more transport audio signals and metadata; and encoding the at least one audio signal, transport audio signal and metadata.

Abstract: An apparatus, method and computer program is described comprising: receiving a near-field audio source signal from a near-field microphone (22); receiving a far-field audio signal from an array comprising one or more far-field microphones (23); determining a filter length of a first portion of a room impulse response filter for the near-field microphone, wherein said filter length of said first portion is the same at each of a plurality of frequency bands of the filter and wherein said filter length of said first portion includes a direct acoustic propagation delay; and determining a filter length of a second portion of the room impulse response filter at each of the plurality of frequency bands, wherein the filter length of said second portion is frequency-dependent.