公开(公告)号：US20220386056A1

公开(公告)日：2022-12-01

申请号：US17634108

申请日：2020-07-27

Applicant: Nokia Technologies Oy

Inventor： Adriana VASILACHE ,  Mikko-Ville LAITINEN

IPC: H04S7/00 ,  H04S3/00 ,  G10L19/008 ,  G10L19/035

Abstract: A method for spatial audio signal encoding comprising: obtaining a plurality of audio direction parameters, wherein each parameter comprises an elevation value and an azimuth value and wherein each parameter has an ordered position; deriving for each of the plurality of audio direction parameters a corresponding derived audio direction parameter (SP) comprising an elevation and an azimuth value, corresponding derived audio direction parameters (SP) being arranged in a manner determined by a spatial utilization defined by the elevation values and the azimuth values of the plurality of audio direction parameters; rotating each derived audio direction parameter (SP) by the azimuth value (φ0) of an audio direction parameter in the first position of the plurality of audio direction parameters and quantizing the rotation to determine for each a corresponding quantized rotated derived audio direction parameter; changing the ordered position of an audio direction parameter to a further position coinciding with a position of a rotated derived audio direction parameter when the azimuth value of the audio direction parameter is closest to the azimuth value of the further rotated derived audio direction parameter compared to the azimuth values of other rotated derived audio direction parameters, followed by determining for each of the plurality audio direction parameters a difference between each audio direction parameter and their corresponding quantized rotated derived audio direction parameter; and quantizing a difference for each of the plurality of audio direction parameters, wherein a difference quantization resolution for each of the plurality of audio direction parameters is defined based on a spatial extent of the audio direction parameters.

公开(公告)号：US20220377456A1

公开(公告)日：2022-11-24

申请号：US17683427

申请日：2022-03-01

Applicant: Nokia Technologies Oy

Inventor： Hannu PULAKKA ,  Matti HAMALAINEN ,  Mikko-Ville LAITINEN

IPC: H04R1/32

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.

公开(公告)号：US20220189494A1

公开(公告)日：2022-06-16

申请号：US17441829

申请日：2020-03-26

Applicant: Nokia Technologies Oy

Inventor： Mikko-Ville LAITINEN ,  Adriana VASILACHE

IPC: G10L19/02 ,  G10L25/21

Abstract: There is inter alia disclosed an apparatus for spatial audio encoding which can receive or determine for one or more audio signals (102), spatial audio parameters (106) on a sub band basis for providing spatial audio reproduction, the spatial audio parameters can comprise a coherence value (112) for each sub band of a plurality of subbands (202) of a frame. The apparatus then determines a significance measure for the coherence values (401) of the plurality of sub bands of the frame and uses the significance measure to determine whether to encode (403) the coherence values of the plurality of sub bands of the frame.

公开(公告)号：US20210377685A1

公开(公告)日：2021-12-02

申请号：US16761399

申请日：2018-10-30

Applicant: Nokia Technologies Oy

Inventor： Mikko-Ville LAITINEN ,  Juha VILKAMO

IPC: H04S3/02 ,  G10L19/008

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.

公开(公告)号：US20210343296A1

公开(公告)日：2021-11-04

申请号：US17261633

申请日：2019-07-19

Applicant: Nokia Technologies Oy

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

IPC: G10L19/008 ,  H04S7/00 ,  G10L19/20

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.

公开(公告)号：US20210319799A1

公开(公告)日：2021-10-14

申请号：US17270354

申请日：2019-08-08

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Tapani PIHLAJAKUJA ,  Mikko-Ville LAITINEN

IPC: G10L19/02 ,  G10L19/008

Abstract: An apparatus comprising means for: obtaining at least one audio signal; obtaining at least one parameter respectively for each of at least two frequency bands associated with the at least one audio signal; and selecting a frequency band of the at least two frequency bands based on comparing at least one further respective parameter for each of the at least two frequency bands wherein the at least one further respective parameter is determined from each of the at least two frequency bands; generating an output comprising a selection of the at least one parameter associated with the selected frequency band of the at least two frequency bands, such that the selection of the at least one parameter associated with the selected frequency band is configured to reduce a bitrate or size of the output and wherein the at least one parameter of the selected frequency band is configured to represent respective parameters of the at least two frequency bands.

公开(公告)号：US20210210104A1

公开(公告)日：2021-07-08

申请号：US17058699

申请日：2019-05-29

Applicant: Nokia Technologies Oy

Inventor： Lasse LAAKSONEN ,  Anssi RAMO ,  Mikko-Ville LAITINEN ,  Tapani PIHLAJAKUJA

IPC: G10L19/008 ,  G06F3/16 ,  H04R3/00

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.

公开(公告)号：US20210176579A1

公开(公告)日：2021-06-10

申请号：US17045334

申请日：2019-03-28

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Mikko-Ville LAITINEN ,  Juha VILKAMO

IPC: H04S7/00 ,  H04R5/027 ,  H04R3/00 ,  G10L25/21 ,  H04S3/02 ,  H04R5/04 ,  H04S3/00

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.

公开(公告)号：US20210099795A1

公开(公告)日：2021-04-01

申请号：US16981767

申请日：2019-03-22

Applicant: Nokia Technologies Oy

Inventor： Juha VILKAMO ,  Mikko-Ville LAITINEN

IPC: H04R3/00 ,  H04S7/00 ,  G10L19/008

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.

公开(公告)号：US20210051430A1

公开(公告)日：2021-02-18

申请号：US17040669

申请日：2019-03-25

Applicant: Nokia Technologies Oy

Inventor： Antti ERONEN ,  Mikko-Ville LAITINEN ,  Juha VILKAMO ,  Lasse LAAKSONEN ,  Anssi RAMO

IPC: H04S3/00 ,  G10L19/008 ,  H04S7/00

Abstract: An apparatus for spatial audio signal decoding including at least one processor and at least one memory including a computer program code configured to cause the apparatus at least to: receive at least one associated audio signal, the at least one associated audio signal based on a spatial audio signal; spatial metadata associated with the at least one associated audio signal, the spatial metadata including at least one parameter representing an ambiance energy distribution of the spatial audio signal and at least one directional parameter representing directional information of the spatial audio signal; synthesize from the at least one associated audio signal at least one output audio signal based on the at least one directional parameter and the least one parameter, wherein the at least one parameter controls ambiance energy distribution of the at least one output signal.