Abstract: A method for generating a parametric spatial audio stream, the method including: obtaining at least one mono-channel audio signal from at least one close microphone; obtaining at least one of: at least one reverberation parameter; at least one control parameter configured to control spatial features of the parametric spatial audio stream; generating, based on the at least one reverberation parameter, at least one reverberated audio signal from a respective at least one mono-channel audio signal; generating at least one spatial metadata parameter based on at least one of: the at least one mono-channel audio signal; the at least one reverberated audio signal; the at least one control parameter; and the at least one reverberation parameter; and encoding the at least one reverberated audio signal and the at least one spatial metadata parameter to generate the spatial audio stream.

Abstract: A method for generating a spatial audio stream, the method including: obtaining at least two audio signals from at least two microphones; extracting from the at least two audio signals a first audio signal, the first audio signal including at least partially speech of a user; extracting from the at least two audio signals a second audio signal, wherein speech of the user is substantially not present within the second audio signal; and encoding the first audio signal and the second audio signal to generate the spatial audio stream such that a rendering of speech of the user to a controllable direction and/or distance is enabled.

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: According to an example embodiment, a method for processing a multi-channel input audio signal representing a sound field into a multi-channel output audio signal representing said sound field in accordance with a predefined loudspeaker layout is provided, the method comprising the following for at least one frequency band: obtaining spatial audio parameters that are descriptive of spatial characteristics of said sound field; estimating a signal energy of the sound field represented by the multi-channel input audio signal; estimating, based on said signal energy and the obtained spatial audio parameters, respective output signal energies for channels of the multi-channel output audio signal according to said predefined loudspeaker layout; determining a maximum output energy as the largest of the output signal energies across channels of said multi-channel output audio signal; and deriving, on basis of said maximum output energy, a gain value for adjusting sound reproduction gain in at least one of said channe

Abstract: An apparatus including means configured to: obtain at least one audio stream, wherein the at least one audio stream includes one or more transport audio signals, wherein the one or more transport audio signals is a defined type of transport audio signal; and convert the one or more transport audio signals to at least one or more further transport audio signals, the one or more further transport audio signals being a further defined type of transport audio signal.

Abstract: A device may be configured to: obtain at least a first audio signal and a second audio signal, wherein the first audio signal and the second audio signal are captured with a microphone array comprising at least two microphones; identify a first direction for a plurality of frequency bands; and identify a second direction for the plurality of frequency bands; wherein the first direction and the second direction are identified based, at least partially, on spatial analysis of the first audio signal and the second audio signal.

Abstract: An apparatus, method and computer program product for: receiving information on a position of at least one user with respect to a spatial audio field provided by an audio source device, determining an audio volume level at the position of the at least one user, receiving information relating to background noise generated by the audio source device when providing the spatial audio field, determining, based on the audio volume level at the position of the at least one user and the information relating to the background noise, control information for controlling the audio source device, and controlling the audio source device based on the control information when providing the spatial audio field.

Abstract: Examples of the disclosure relate to apparatus, methods and computer programs for spatial processing audio scenes with improved intelligibility for speech or other key sounds. In examples of the disclosure at least one audio signal including two or more channels is obtained. The audio signal is processed with program code to identify at least a first portion of the audio signal wherein the first portion predominantly includes audio of interest. The first portion is processed using a first process. The second portion is processed using a second process including spatial audio processing. The first process includes no spatial audio processing or a low level of spatial audio processing compared to the second process and the second portion predominantly includes a remainder. The processed first portion and second portion can be played back using two or more loudspeakers.

Abstract: An apparatus including circuitry configured to: receive a spatial audio signal, the spatial audio signal including at least one audio signal and spatial metadata associated with the at least one audio signal; obtain a room effect control indication; and determine, based on the room effect control indication, whether a room effect is to be applied to the at least one audio signal, wherein the circuitry is configured, when the room effect is to be applied to the spatial audio signal, to: generate a first part binaural audio signal based on the at least one audio signal and spatial metadata; generate a second part binaural audio signal based on the at least one audio signal, at least the second part binaural audio signal is generated with at least in part the room effect so as to have a different response than a response of the first part binaural audio signal; and combine the first part binaural audio signal and the second part binaural audio signal to generate a combined binaural audio signal.

Abstract: Examples of the disclosure could be implemented in systems where a first device, such as a mobile phone or other processing device, renders audio input signals to provide spatial audio. The spatial audio can then be transmitted to another device, such as a headset or earphones for playback. In such examples the rendering apparatus is configured to receive one or more audio input signals and information indicative of a user head position. The rendering apparatus processes the received one or more audio input signals to obtain a spatial audio signal based on the user head position and obtains compensation metadata. The compensation metadata includes information indicating how the spatial audio signal should be adjusted to account for a change in the user head position. The rendering apparatus includes the compensation metadata to be used to adjust the spatial audio signal to account for a change in the user head position.

Abstract: An apparatus including circuitry configured to: provide a plurality of metrics associated with multiple directions, wherein the metrics are dependent, for the respective multiple directions, on an amount of direct-sound propagated; accumulate, for the respective multiple directions, values dependent upon the metrics associated with the respective multiple directions to enable determination of sound source directions.

Abstract: An apparatus comprising means configured to: obtain at least one audio signal; obtain, for the at least one audio signal, spatial audio signal parameter values, the spatial audio signal parameters values distributed within a time-frequency domain (106); determine a merge metric to control a merging of the spatial audio signal parameter values over the time-frequency domain (201); and merge (203), based on the merge metric (202), the spatial audio signal parameter values to a smaller number of spatial audio signal parameter values overtime and/or frequency within the time-frequency domain.

Abstract: An apparatus configured to: determine at least one spatial audio parameter for providing spatial audio reproduction; determine at least one transport signal; determine at least one coherence parameter for at least two frequency bands, wherein a sound scene is configured to be reproduced based, at least partially, on the at least one transport signal, the at least one spatial audio parameter, and the at least one coherence parameter; and provide the at least one transport signal, the at least one spatial audio parameter, and the at least one coherence parameter for encoding.

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: An apparatus including a body, a plurality of microphones arranged in a predetermined geometry relative to the body such that the apparatus is configured to capture sound substantially from all directions around the body to produce direction and ambience information for the captured sound, and electronics for processing signals from the plurality of microphones.

Abstract: Apparatuses, systems, methods, and computer programs enable spatial audio rendering that allows for six degrees of freedom of movement of a listener. The spatial audio comprises higher order ambisonic signals. An apparatus includes circuitry for generating audio signal content sets that provide spatial audio scenes; determining positions in which the spatial audio scenes are audible; and associating a subset of audio signal content sets with the determined positions such that a first subset of audio signal content sets is associated with a first position and a second subset of audio signal content sets is associated with a second position. When audio signal content is provided for rendering, the first subset of audio signal content sets is retrieved if the listener is at the first position and if the listener is at the second position the second subset of audio signal content sets is retrieved.

Abstract: An apparatus configured to: determine, for two or more speaker channel audio signals, at least one spatial audio parameter for providing spatial audio reproduction; determine, between the two or more speaker channel audio signals, at least one coherence parameter, wherein the at least one coherence parameter is configured to provide at least one inter-channel coherence information between the two or more speaker channel audio signals for respective ones of at least two frequency bands of the two or more speaker channel audio signals; determine at least one value based, at least partially, on the at least one coherence information, wherein the at least one value is configured to indicate at least one information associated with the at least one inter-channel coherence information; and transmit the at least one spatial audio parameter and the at least one determined value.

Abstract: An apparatus configured to: determine, for two or more microphone audio signals, a plurality of spatial audio parameters for providing spatial audio reproduction, wherein the plurality of spatial audio parameters are associated with respective frequency bands of at least two frequency bands of the two or more microphone audio signals; determine at least one coherence parameter associated with a sound field, wherein the sound field is associated with the two or more microphone audio signals; determine at least one audio signal based on the two or more microphone audio signals; and enable the spatial audio reproduction based on the plurality of spatial audio parameters, the at least one coherence parameter, and the at least one determined audio signal.

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.