Abstract: Apparatus including a processor configured to: receive at least two microphone audio signals; determine spatial metadata associated with the at least two microphone audio signals; and synthesize adaptively a plurality of spherical harmonic audio signals based on at least one microphone audio signal and the spatial metadata in order to output a pre-determined order spatial audio signal format.

Abstract: An apparatus for generating an audio output signal having two or more audio output channels from an audio input signal having two or more audio input channels includes a provider and a signal processor. The provider is adapted to provide first covariance properties of the audio input signal. The signal processor is adapted to generate the audio output signal by applying a mixing rule on at least two of the two or more audio input channels. The signal processor is configured to determine the mixing rule based on the first covariance properties of the audio input signal and based on second covariance properties of the audio output signal, the second covariance properties being different from the first covariance properties.

Abstract: A method for spatial audio signal processing, including determining at least one direction parameter for at least one frequency band based on microphone signals received from a microphone array; processing the determined at least one direction parameter to determine at least one distance parameter for the at least one frequency band; and enabling an output and/or store of the at least one distance parameter, at least one audio signal, and the at least one direction parameter.

Abstract: According to an example embodiment, a method for processing two or more microphone signals is provided. The method includes deriving a first captured audio signal having one or more channels based on the two or more microphone signals received from respective two or more microphones in accordance with capture control data that identifies at least one characteristic for derivation of the first captured audio signal; storing at least part of the capture control data and intermediate audio data derived based on the two or more received microphone signals; deriving modified capture control data as a combination of the stored capture control data and user-definable post-capture control data that identifies at least one characteristic for derivation of a second captured audio signal; and deriving the second captured audio signal having one or more channels based on said intermediate audio data in accordance with the modified capture control data.

Abstract: Examples of the disclosure relate to apparatus, methods and computer programs for controlling noise reduction in audio signals including audio captured by a plurality of microphones. The apparatus includes circuitry for obtaining one or more audio signals wherein the one or more audio signals include audio captured by a plurality of microphones and dividing the obtained one or more audio signals into a plurality of intervals. The circuitry may also be configured for determining one or more parameters relating to one or more noise characteristics for different intervals and controlling noise reduction applied to the different intervals based on the determined one or more parameters within the different intervals.

Abstract: A method for spatial audio signal processing including: determining at least one first direction parameter for at least one frequency band based on microphone signals received from a first microphone array; determining at least one second direction parameter for the at least one frequency band based on at least one microphone signal received from at least one second microphone, wherein microphones from the first microphone array and the at least one second microphone are spatially separated from each other; processing the determined at least one first direction parameter and the at least one second direction parameter to determine at least one distance parameter for the at least one frequency band; and enabling an output and/or store of the at least one distance parameter, at least one audio signal, and the at least one first direction parameter.

Abstract: A method for spatial audio signal processing, including determining, for two or more playback audio signals, at least one spatial audio parameter for providing spatial audio reproduction; determining between the two or more playback audio signals at least one audio signal relationship parameter, the at least one audio signal relationship parameter being associated with a determination of inter-channel signal relationship information between the two or more playback audio signals and for at least two frequency bands, such that the two or more playback audio signals are configured to be reproduced based on the at least one spatial audio parameter and the at least one audio signal relationship parameter.

Abstract: The application relates to apparatus, methods and computer programs for controlling band limited audio objects. The example apparatus includes circuitry configured for: obtaining a band limited audio object comprising one or more parameters; obtaining spatial metadata associated with the band limited audio object; determining a position of a user; and using the determined position of the user and the spatial metadata associated with the band limited audio object to control at least one of the parameters of the band limited audio object.

Abstract: According to an example embodiment, a method for processing a spatial audio signal that represents an audio scene, wherein the spatial audio signal is controllable and associated with at least two viewing directions is provided, the method including receiving a focus direction and a focus amount; processing the spatial audio signal by modifying the audio scene so as to control emphasis in, at least in part, a portion of the spatial audio signal in said focus direction according to said focus amount; and outputting the processed spatial audio signal, wherein the modified audio scene enables the emphasis in, at least in part, said portion of the spatial audio signal in said focus direction according to said focus amount.

Abstract: A method, apparatus and computer program, the method comprising: receiving a plurality of input signals representing a sound space; using the received plurality of input signals to obtain spatial metadata corresponding to the sound space; using the received plurality of input signals to obtain a first spatial audio signal corresponding to the spatial metadata; and associating the first spatial audio signal with the spatial metadata to enable the spatial metadata to be used to process the first spatial audio signal to obtain a second spatial audio signal.

Abstract: Apparatus including a processor configured to: receive at least two microphone audio signals; determine spatial metadata associated with the at least two microphone audio signals; and synthesize adaptively a plurality of spherical harmonic audio signals based on at least one microphone audio signal and the spatial metadata in order to output a pre-determined order spatial audio signal format.

Abstract: An apparatus, electronic device, method and computer program wherein the apparatus includes: processing circuitry; and memory circuitry including computer program code, the memory circuitry and the computer program code configured to, with the processing circuitry, enable the apparatus to perform: obtaining spatial information relating to a captured sound field from a first set of microphones; obtaining one or more signals from a second set of microphones where the one or more signals relate to the captured sound field; and using the obtained spatial information from the first set of microphones to process the one or more signals obtained from the second set of microphones; wherein the first set of microphones is provided within an electronic device and the second set of microphones is provided external to the electronic device.

Abstract: An apparatus including circuitry configured for: receiving at least two audio signals; determining at least one lower frequency effect parameter based on the at least two audio signals; determining at least one transport audio signal based on the at least two audio signals; controlling a transmission/storage of the at least one transport audio signal and the at least one lower frequency effect information such that a rendering based on the at least one transport audio signal and the at least one lower frequency effect information enables a determination of at least one low frequency effect channel.

Abstract: Apparatus including circuitry configured for: determining, for two or more speaker channel audio signals, at least one spatial audio parameter for providing spatial audio reproduction; determining between the two or more speaker channel audio signals at least one audio signal relationship parameter, the at least one audio signal relationship parameter being associated with at least one coherence parameter, in such a way that the at least one coherence parameter provides at least one interchannel coherence information for at least two frequency bands, to reproduce the two or more speaker channel audio signals based on the at least one spatial audio parameter and the at least one audio signal relationship parameter; and transmitting using at least one determined value.

Abstract: An apparatus, electronic device, method and computer program wherein the apparatus includes: processing circuitry; and memory circuitry including computer program code, the memory circuitry and the computer program code configured to, with the processing circuitry, enable the apparatus to perform: obtaining spatial information relating to a captured sound field from a first set of microphones; obtaining one or more signals from a second set of microphones where the one or more signals relate to the captured sound field; and using the obtained spatial information from the first set of microphones to process the one or more signals obtained from the second set of microphones; wherein the first set of microphones is provided within an electronic device and the second set of microphones is provided external to the electronic device.

Abstract: An apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: determine, for two or more microphone audio signals, at least one spatial audio parameter for providing spatial audio reproduction; determine at least one coherence parameter associated with a sound field based on the two or more microphone audio signals, such that another sound field is configured to be reproduced based on the at least one spatial audio parameter and the at least one coherence parameter.

Abstract: A method for spatial audio signal processing including: determining at least one first direction parameter for at least one frequency band based on microphone signals received from a first microphone array; determining at least one second direction parameter for the at least one frequency band based on at least one microphone signal received from at least one second microphone, wherein microphones from the first microphone array and the at least one second microphone are spatially separated from each other; processing the determined at least one first direction parameter and the at least one second direction parameter to determine at least one distance parameter for the at least one frequency band; and enabling an output and/or store of the at least one distance parameter, at least one audio signal, and the at least one first direction parameter.

Abstract: An apparatus for spatial audio signal processing, the apparatus including at least one processor and at least one memory including a computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus at least to: receive audio signals from a microphone array, the microphone array including three or more microphones forming a geometry with defined displacements between pairs of the three or more microphones; determine delay information between audio signals associated with the pairs of the three or more microphones; determine an operator based on the geometry with defined displacements between the pairs of the three or more microphones; apply the operator to the delay information to generate at least one direction parameter associated with the audio signals.

Abstract: Examples of the disclosure relate to apparatus, electronic devices, methods and computer programs. The apparatus are 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 by a microphone array including at least two microphones. The apparatus are also configured to identify at least a first direction and at least a second direction. The first and second directions are identified for a plurality of frequency bands. The first direction and the second direction are identified by using delay parameters between at least the first audio signal and the second audio signal.

Abstract: An audio signal processing decoder having at least one frequency band and being configured for processing an input audio signal having a plurality of input channels in the at least one frequency band, wherein the decoder is configured to analyze the input audio signal, wherein inter-channel dependencies between the input channels are identified; and to align the phases of the input channels based on the identified inter-channel dependencies, wherein the phases of input channels are the more aligned with respect to each other the higher their inter-channel dependency is; and to downmix the aligned input audio signal to an output audio signal having a lesser number of output channels than the number of the input channels.