公开(公告)号：US20210360362A1

公开(公告)日：2021-11-18

申请号：US16625597

申请日：2018-06-08

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Mikko-Ville LAITINEN ,  Mikko TAMMI ,  Jussi VIROLAINEN ,  Jorma MÄKINEN

IPC: H04S7/00 ,  H04R1/40

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 channels of the multi-channel output audio signal.

公开(公告)号：US20220060824A1

公开(公告)日：2022-02-24

申请号：US17417860

申请日：2020-01-02

Applicant: Nokia Technologies Oy

Inventor： Jussi VIROLAINEN ,  Juha VILKAMO ,  Kai HAVUKAINEN ,  Mikko TAMMI ,  Toni MAKINEN ,  Juha OJANPERA

IPC: H04R3/00 ,  G10L19/008

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.

公开(公告)号：US20210266665A1

公开(公告)日：2021-08-26

申请号：US17319656

申请日：2021-05-13

Applicant: Nokia Technologies Oy

Inventor： Juha VILKAMO ,  Jussi VIROLAINEN

IPC: H04R3/00 ,  G10L25/18 ,  G10L25/21 ,  H04R1/40

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.

公开(公告)号：US20190289420A1

公开(公告)日：2019-09-19

申请号：US16335381

申请日：2017-09-14

Applicant: Nokia Technologies Oy

Inventor： Jorma MAKINEN ,  Mikko TAMMI ,  Mikko-Ville LAITINEN ,  Jussi VIROLAINEN

IPC: H04S7/00 ,  H03G3/24 ,  H04R1/28

Abstract: 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.

公开(公告)号：US20250119700A1

公开(公告)日：2025-04-10

申请号：US18981955

申请日：2024-12-16

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Sampo VESA ,  Mikko-Ville LAITINEN ,  Jussi VIROLAINEN

IPC: H04S7/00 ,  H04S3/00

Abstract: 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.

公开(公告)号：US20220014866A1

公开(公告)日：2022-01-13

申请号：US17293723

申请日：2019-11-08

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Sampo VESA ,  Mikko-Ville LAITINEN ,  Jussi VIROLAINEN

IPC: H04S7/00 ,  H04S1/00 ,  H04R5/04

Abstract: According to an example embodiment, a technique for processing an input audio signal (101) comprising a multi-channel audio signal is provided, the technique comprising: deriving (104), based on the input audio signal (101), a first signal component (105-1) 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 (105-2) comprising a multi-channel audio signal that represents a non-focus portion of the spatial audio image; processing (112) the second signal component (105-2) into a modified second signal component (113) wherein the width of the spatial audio image is extended from that of the second signal component (105-2); and combining (114) the first signal component (105-1) and the modified second signal component (112) into an output audio signal (115) comprising a multi-channel audio signal that represents partially extended spatial audio image.

公开(公告)号：US20210250717A1

公开(公告)日：2021-08-12

申请号：US16973600

申请日：2019-06-12

Applicant: Nokia Technologies Oy

Inventor： Mikko-Ville LAITINEN ,  Milkka VILERMO ,  Mikko TAMMI ,  Jussi VIROLAINEN ,  Juha VILKAMO

IPC: H04S1/00 ,  H04S7/00

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.

公开(公告)号：US20190182587A1

公开(公告)日：2019-06-13

申请号：US16310010

申请日：2017-06-20

Applicant: Nokia Technologies Oy

Inventor： Juha VILKAMO ,  Jussi VIROLAINEN

IPC: H04R3/00 ,  G10L25/21 ,  G10L25/18 ,  H04R1/40

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.

公开(公告)号：US20230024675A1

公开(公告)日：2023-01-26

申请号：US17953134

申请日：2022-09-26

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Mikko-Ville LAITINEN ,  Mikko TAMMI ,  Jussi VIROLAINEN ,  Jorma MÄKINEN

IPC: H04S7/00 ,  H04R1/40

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 channels of the multi-channel output audio signal.

公开(公告)号：US20220295212A1

公开(公告)日：2022-09-15

申请号：US17638393

申请日：2020-09-17

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Juha VILKAMO ,  Riitta VÄÄNÄNEN ,  Sampo VESA ,  Mikko-Ville LAITINEN ,  Jussi VIROLAINEN

IPC: H04S7/00 ,  H04R5/04

Abstract: According to an example embodiment, a method for processing an input audio signal (101) in accordance with spatial metadata (103) so as to play back a spatial audio signal in a device (50) in dependence of at least one sound reproduction characteristic (105) of the device is provided, the method comprising obtaining said input audio signal (101) and said spatial metadata (103); obtaining said at least one sound reproduction characteristic (105) 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 (103), 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 (103) and in dependence of said at least one sound reproduction characteristic (105), 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.