Nokia Technologies Oy

Nokia Corporation

Other

Microsoft Technology Licensing, LLC

Wsou Investments, LLC

Jussi Virolainen

Mikko Tapio Tammi

Juha Vilkamo

Mikko-Ville Laitinen

Marko Tapani Yliaho

Antti Heikki Tapio Sassi

Miikka Tapani Vilermo

Kari Juhani Jarvinen

Asta Maria Karkkainen

Pasi Sakari Ojala

Matti Sakari Hamalainen

Mikko-ville Laitinen

Ole Kirkeby

Sampo Vesa

Jorma Mäkinen

Joonas Itaranta

Ari Lakaniemi

Ravi Shenoy

Toni Mäkinen

Mikko Olavi Heikkinen

Kari Juhani Järvinen

Leo Kärkkäinen

Jarmo Antero Hiipakka

Jorma Makinen

Ville Mikael Myllyla

Pushkar Prasad Patwardhan

Antti Pekka Kelloniemi

Petri Jarske

Pauli Laine

Asta Maria Kärkkäinen

Jari Selin

Laura Laaksonen

Riitta Väänänen

Antti Pasanen

Ali Ahmaniemi

Jukka Saunamaki

Arto Ylikoski

Kai Samposalo

Jussi Mutanen

Gaetan Lorho

Kimmo Makitalo

Ossi E Maenpaa

Erkki Mikkonen

Juha Ollikainen

Jukka Saunamä Ki

According to an example embodiment, a method for processing an input audio signal () in accordance with spatial metadata () so as to play back a spatial audio signal in a device () in dependence of at least one sound reproduction characteristic () of the device is provided, the method comprising obtaining said input audio signal () and said spatial metadata (); obtaining said at least one sound reproduction characteristic () of the device; rendering a first portion of the spatial audio signal using a first type playback procedure applied on the input audio signal in dependence of the spatial metadata (), wherein the first portion comprises sound directions within a front region of the spatial audio signal; and rendering a second portion of the spatial audio signal using a second type playback procedure applied on the input audio signal in dependence of the spatial metadata () and in dependence of said at least one sound reproduction characteristic (), wherein the second portion comprises sound directions that are not included in the first portion and where the second type playback procedure is different from the first playback procedure and involves cross-talk cancellation processing.

Audio processing

Examples of the disclosure relate to apparatus, methods and computer programs for repositioning spatial audio streams. The apparatus is configured to receive a plurality of spatial audio streams wherein the spatial audio streams include one or more audio signals and associated spatial metadata. The apparatus is also configured to receive obtaining repositioning information relating to at least one of the plurality of spatial audio streams and repositioning the at least one of the plurality of spatial audio streams based on the repositioning information.

Apparatus, methods and computer programs for repositioning spatial audio streams

According to an example embodiment, a technique for processing an input audio signal () comprising a multi-channel audio signal is provided, the technique comprising: deriving (), based on the input audio signal (), a first signal component (-) comprising a multi-channel audio signal that represents a focus portion of a spatial audio image conveyed by the input audio signal and a second signal component (-) comprising a multi-channel audio signal that represents a non-focus portion of the spatial audio image; processing () the second signal component (-) into a modified second signal component () wherein the width of the spatial audio image is extended from that of the second signal component (-); and combining () the first signal component (-) and the modified second signal component () into an output audio signal () comprising a multi-channel audio signal that represents partially extended spatial audio image.

Audio processing for adaptive loudspeaker stereo widening

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.

Recording and rendering audio signals

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 channels of the multi-channel output audio signal.

Spatial audio processing

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.

Apparatus, method and computer program for obtaining audio signals

An audio processing technique including obtaining a multi-channel audio signal, a first sound direction of interest and a second sound direction of interest; determining, for one or more frequency bands, a respective first range of sound directions encompassed by a first focus pattern directed to said first sound direction of interest and a respective second range of sound directions encompassed by a second focus pattern directed to said second sound direction of interest; determining, for said one or more frequency bands, respective overlap between the first and second ranges of sound directions; and deriving, based on the multi-channel audio signal and in accordance with said first and second focus patterns, a processed audio signal where sounds in said first and second sound directions of interest are emphasized in relation to sounds in other sound directions, said derivation including controlling emphasis in dependence of the determined overlap.

A method, apparatus and computer program product are provided in order to present an intuitive visual user interface for audio equalization. In the context of a method includes defining at least two locations upon the visual user interface. Each location is associated with a predefined audio equalization characteristic. The method also causes first and second configurable elements to be provided by the visual user interface. Further, the method includes associating an audio equalization characteristic with the first configurable element based upon a location of the first configurable element relative to the at least two locations. The second configurable element provides a visual representation of the audio equalization characteristic based upon the location of the first configurable element.

Method and apparatus for providing a visual user interface for audio equalization

Apparatus including a processor configured to: provide a position for at least one sound source relative to a reference position; analyse at least one input audio signal associated with the at least one sound source to determine at least one gain value based on the at least one input audio signal and the position for the at least one sound source relative to the reference position; and synthesize at least two output channels based on the at least one input audio signal, a directional transfer function pair, the at least one gain value and the position for the at least one sound source relative to the reference position.

Gain control in spatial audio systems

Apparatus comprising one or more processors configured to: receive at least two microphone audio signals () for audio signal processing wherein the audio signal processing comprises at least a spatial audio signal processing () and beamforming processing (); determine spatial information () based on the audio signal processing associated with the at least two microphone audio signals; determine focus information () for the beamforming processing associated with the at least two microphone audio signals; and apply a spatial filter () in order to synthesize at least one spatially processed audio signal () based on the at least one beamformed audio signal from the at least two microphone audio signals (), the spatial information () and the focus information () in such a way that the spatial filter (), the at least one beamformed audio signal (), the spatial information () and the focus information () are configured to be used to spatially synthesize () the at least one spatially processed audio signal ().

Two stage audio focus for spatial audio processing

An apparatus comprising at least one processor and at least one memory including 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 perform processing at least one control parameter dependent on at least one sensor input parameter, processing at least one audio signal dependent on the processed at least one control parameter, and outputting the processed at least one audio signal.

Control parameter dependent audio signal processing

Apparatus comprising a processor configured to: determine a first orientation value of a head () of a user () of the apparatus relative to a further body part () of the user () using at least one orientation sensor (); and control a 3D audio reproduction function of the apparatus based on the first orientation value.

Differential headtracking apparatus

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Espoo, Finland

Jussi Virolainen