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：US20230154459A1

公开(公告)日：2023-05-18

申请号：US18151214

申请日：2023-01-06

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Jorma MÄKINEN ,  Matti HÄMÄLÄINEN ,  Hannu PULAKKA

IPC: G10L15/20 ,  G10L21/0232 ,  G10L25/06 ,  G10L25/18 ,  H04R1/40

CPC classification number: G10L15/20 ,  G10L21/0232 ,  G10L25/06 ,  G10L25/18 ,  H04R1/406

Abstract: A method is provided that includes obtaining two or more microphone audio signals; analysing the two or more microphone audio signals for a defined noise type; and processing the two or more microphone audio signals based on the analysis to generate at least one audio signal suitable for automatic speech recognition. A corresponding apparatus is also provided.

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.