公开(公告)号：US11290509B2

公开(公告)日：2022-03-29

申请号：US16674879

申请日：2019-11-05

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Manfred Lutzky ,  Stefan Döhla ,  Martin Dietz

IPC分类号： H04L29/06 ,  H04L65/60 ,  H04L65/1069 ,  H04L65/65 ,  H04L69/24 ,  H04L65/10 ,  H04L65/1016

摘要： A network device for managing a call between user terminals checks whether a first user terminal supports usage of a first audio coding mode for the call, and a second user terminal intends to use a second audio coding mode for the call, and, if the first user terminal supports the usage of the first audio coding mode, and the second user terminal intends to use the second audio coding mode, repacks first data of the call sent from the first user terminal to the second user terminal and packetized into first packets referring to the second audio coding mode, into second packets referring to the first audio coding mode; and repacks second data of the call sent from the second user terminal to the first user terminal and packetized into third packets referring to the second audio coding mode, into fourth packets referring to the first audio coding mode.

公开(公告)号：US12067991B2

公开(公告)日：2024-08-20

申请号：US17541161

申请日：2021-12-02

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Markus Multrus ,  Stefan Döhla ,  Andrea Eichenseer

IPC分类号： G10L19/005 ,  G10L19/008 ,  H04R1/32

CPC分类号： G10L19/005 ,  G10L19/008 ,  H04R1/32

摘要： What is described is a method for loss concealment of spatial audio parameters, the spatial audio parameters having at least a direction of arrival information; the method having the following steps:



receiving a first set of spatial audio parameters having at least a first direction of arrival information;
receiving a second set of spatial audio parameters, having at least a second direction of arrival information; and
replacing the second direction of arrival information of a second set by a replacement direction of arrival information derived from the first direction of arrival information, if at least the second direction of arrival information or a portion of the second direction of arrival information is lost or damaged.

公开(公告)号：US12033647B2

公开(公告)日：2024-07-09

申请号：US17546540

申请日：2021-12-09

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Jan Büthe ,  Markus Schnell ,  Stefan Döhla ,  Bernhard Grill ,  Martin Dietz

IPC分类号： G10L19/02 ,  G10L19/06 ,  G10L19/22 ,  G10L19/24 ,  G10L19/032

CPC分类号： G10L19/22 ,  G10L19/032

摘要： An audio encoder for encoding audio input data has: a preprocessor for preprocessing the audio input data to obtain audio data to be coded; a coder processor for coding the audio data to be coded; and a controller for controlling the coder processor so that, depending on a first signal characteristic of a first frame of the audio data to be coded, a number of audio data items of the audio data to be coded by the coder processor for the first frame is reduced compared to a second signal characteristic of a second frame, and a first number of information units used for coding the reduced number of audio data items for the first frame is stronger enhanced compared to a second number of information units for the second frame.

公开(公告)号：US11856389B2

公开(公告)日：2023-12-26

申请号：US17332340

申请日：2021-05-27

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Oliver Thiergart ,  Srikanth Korse ,  Stefan Döhla ,  Markus Multrus ,  Fabian Küch ,  Alexandre Bouthéon ,  Andrea Eichenseer ,  Stefan Bayer

IPC分类号： H04S7/00 ,  G10L19/02

CPC分类号： H04S7/307 ,  G10L19/02 ,  G10L19/0212 ,  H04S2400/01 ,  H04S2420/11 ,  H04S2420/13

摘要： An apparatus for generating a sound field description from an input signal having at least two channels has: an input signal analyzer for obtaining direction data and diffuseness data from the input signal; an estimator for estimating a first energy- or amplitude-related measure for an omnidirectional component derived from the input signal and for estimating a second energy- or amplitude-related measure for a directional component derived from the input signal, and a sound component generator for generating sound field components of the sound field, wherein the sound component generator is configured to perform an energy compensation of the directional component using the first energy- or amplitude-related measure, the second energy- or amplitude-related measure, the direction data and the diffuseness data.

公开(公告)号：US11838743B2

公开(公告)日：2023-12-05

申请号：US17332312

申请日：2021-05-27

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Oliver Thiergart ,  Srikanth Korse ,  Stefan Döhla ,  Markus Multrus ,  Fabian Küch ,  Alexandre Bouthéon ,  Andrea Eichenseer ,  Stefan Bayer

IPC分类号： H04S7/00 ,  G10L19/02

CPC分类号： H04S7/307 ,  G10L19/02 ,  G10L19/0212 ,  H04S2400/01 ,  H04S2420/11 ,  H04S2420/13

摘要： An apparatus for generating a sound field description from an input signal having one or more channels including: an input signal analyzer for obtaining diffuseness data from the input signal; a sound component generator for generating, from the input signal, one or more sound field components of a first group of sound field components having for each sound field component a direct component and a diffuse component, and for generating, from the input signal, a second group of sound field components having only a direct component, the sound component generator being configured to perform an energy compensation when generating the first group of sound field components, the energy compensation depending on the diffuseness data and a number of sound field components in the second group, a number of diffuse components in the first group, or a maximum order of sound field components.

公开(公告)号：US12106763B2

公开(公告)日：2024-10-01

申请号：US17571970

申请日：2022-01-10

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Jürgen Herre ,  Fabian Küch ,  Stefan Döhla ,  Markus Multrus ,  Oliver Thiergart ,  Oliver Wübbolt ,  Florin Ghido ,  Stefan Bayer ,  Wolfgang Jaegers

IPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/032 ,  G10L19/038 ,  G10L19/16 ,  G10L19/26 ,  H03M7/30

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/038 ,  G10L19/167 ,  G10L19/26 ,  H03M7/3082 ,  H03M7/6005 ,  H03M7/6011

摘要： An apparatus for encoding directional audio coding parameters comprising diffuseness parameters and direction parameters having a parameter calculator (100) for calculating the diffuseness parameters with a first time or frequency resolution and for calculating the direction parameters with a second time or frequency resolution; and a quantizer and encoder processor (200) for generating a quantized and encoded representation of the diffuseness parameters and the direction parameters.

公开(公告)号：US11937075B2

公开(公告)日：2024-03-19

申请号：US17332358

申请日：2021-05-27

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Oliver Thiergart ,  Srikanth Korse ,  Stefan Döhla ,  Markus Multrus ,  Fabian Küch ,  Alexandre Bouthéon ,  Andrea Eichenseer ,  Stefan Bayer

IPC分类号： H04S7/00 ,  G10L19/02

CPC分类号： H04S7/307 ,  G10L19/02 ,  G10L19/0212 ,  H04S2400/01 ,  H04S2420/11 ,  H04S2420/13

摘要： An apparatus for generating a sound field description using an input signal having a mono-signal or a multi-channel signal comprises: an input signal analyzer for analyzing the input signal to derive direction data and diffuseness data; a low-order components generator for generating a low-order sound field description from the input signal up to a predetermined order and mode; a mid-order components generator for generating a mid-order sound field description above the predetermined order or at the predetermined order and above the predetermined mode and below or at a first truncation order using a synthesis of at least one direct portion and of at least one diffuse portion using the direction data and the diffuseness data; and a high-order components generator for generating a high-order sound field description having a component above the first truncation order using a synthesis of at least one direct portion.

公开(公告)号：US12112762B2

公开(公告)日：2024-10-08

申请号：US18456670

申请日：2023-08-28

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Jürgen Herre ,  Fabian Küch ,  Stefan Döhla ,  Markus Multrus ,  Oliver Thiergart ,  Oliver Wübbolt ,  Florin Ghido ,  Stefan Bayer ,  Wolfgang Jaegers

IPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/032 ,  G10L19/038 ,  G10L19/16 ,  G10L19/26 ,  H03M7/30

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/038 ,  G10L19/167 ,  G10L19/26 ,  H03M7/3082 ,  H03M7/6005 ,  H03M7/6011

摘要： An apparatus for encoding directional audio coding parameters including diffuseness parameters and direction parameters includes: a parameter calculator for calculating the diffuseness parameters with a first time or frequency resolution and for calculating the direction parameters with a second time or frequency resolution; and a quantizer and encoder processor for generating a quantized and encoded representation of the diffuseness parameters and the direction parameters.

公开(公告)号：US11783843B2

公开(公告)日：2023-10-10

申请号：US16871223

申请日：2020-05-11

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Jürgen Herre ,  Fabian Küch ,  Stefan Döhla ,  Markus Multrus ,  Oliver Thiergart ,  Oliver Wübbolt ,  Florin Ghido ,  Stefan Bayer ,  Wolfgang Jaegers

IPC分类号： G10L19/008 ,  G10L19/038 ,  G10L19/16 ,  G10L19/26 ,  G10L19/02 ,  G10L19/032 ,  H03M7/30

CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L19/032 ,  G10L19/038 ,  G10L19/167 ,  G10L19/26 ,  H03M7/3082 ,  H03M7/6005 ,  H03M7/6011

摘要： An apparatus for encoding directional audio coding parameters including diffuseness parameters and direction parameters includes: a parameter calculator for calculating the diffuseness parameters with a first time or frequency resolution and for calculating the direction parameters with a second time or frequency resolution; and a quantizer and encoder processor for generating a quantized and encoded representation of the diffuseness parameters and the direction parameters.

公开(公告)号：US11368790B2

公开(公告)日：2022-06-21

申请号：US16821069

申请日：2020-03-17

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.

发明人： Guillaume Fuchs ,  Jürgen Herre ,  Fabian Küch ,  Stefan Döhla ,  Markus Multrus ,  Oliver Thiergart ,  Oliver Wübbolt ,  Florin Ghido ,  Stefan Bayer ,  Wolfgang Jaegers

IPC分类号： G06F17/00 ,  H04R5/04 ,  H04S7/00

摘要： An apparatus for generating a description of a combined audio scene, includes: an input interface for receiving a first description of a first scene in a first format and a second description of a second scene in a second format, wherein the second format is different from the first format; a format converter for converting the first description into a common format and for converting the second description into the common format, when the second format is different from the common format; and a format combiner for combining the first description in the common format and the second description in the common format to obtain the combined audio scene.