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公开(公告)号：US11856389B2
公开(公告)日：2023-12-26
申请号：US17332340
申请日：2021-05-27
发明人： Guillaume Fuchs , Oliver Thiergart , Srikanth Korse , Stefan Döhla , Markus Multrus , Fabian Küch , Alexandre Bouthéon , Andrea Eichenseer , Stefan Bayer
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.
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公开(公告)号：US11838743B2
公开(公告)日：2023-12-05
申请号：US17332312
申请日：2021-05-27
发明人： Guillaume Fuchs , Oliver Thiergart , Srikanth Korse , Stefan Döhla , Markus Multrus , Fabian Küch , Alexandre Bouthéon , Andrea Eichenseer , Stefan Bayer
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.
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公开(公告)号：US10886883B2
公开(公告)日：2021-01-05
申请号：US16601882
申请日：2019-10-15
摘要： An apparatus for processing an input audio signal includes an evaluator for evaluating a loudness of the input audio signal to determine a loudness range and an actual loudness value. A calculator determines a compressor transfer function based on the determined loudness range, based on a target loudness range and based on the determined actual loudness value. The calculator further determines at least one loudness range control gain based on the determined compressor transfer function. An adjuster provides an output audio signal based on the input audio signal and based on the at least one determined loudness range control gain. The calculator is configured to determine the compressor transfer function such that a difference between a mean loudness of the output audio signal and a mean loudness of the input audio signal is minimized. A corresponding method is also provided.
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公开(公告)号：US11990142B2
公开(公告)日：2024-05-21
申请号：US17550905
申请日：2021-12-14
发明人： Alexandre Bouthéon , Guillaume Fuchs , Markus Multrus , Fabian Küch , Oliver Thiergart , Stefan Bayer , Sascha Disch , Jürgen Herre
IPC分类号： G10L19/008 , G10L19/08 , H04R3/02 , H04S3/02
CPC分类号： G10L19/008 , G10L19/08 , H04S3/02 , H04S2400/01 , H04S2400/03
摘要： There are disclosed several examples of encoding and decoding technique. In particular, an audio synthesizer for generating a synthesis signal from a downmix signal includes:
an input interface for receiving the downmix signal, the downmix signal having a number of downmix channels and side information, the side information including channel level and correlation information of an original signal, the original signal having a number of original channels; and
a synthesis processor for generating, according to at least one mixing rule, the synthesis signal using:
channel level and correlation information of the original signal; and
covariance information associated with the downmix signal.-
公开(公告)号：US11854560B2
公开(公告)日：2023-12-26
申请号：US17645110
申请日：2021-12-20
发明人： Guillaume Fuchs , Stefan Bayer , Markus Multrus , Oliver Thiergart , Alexandre Bouthéon , Jürgen Herre , Florin Ghido , Wolfgang Jaegers , Fabian Küch
IPC分类号： G10L19/032 , G10L19/008 , H04R3/00 , H04R3/04 , H04R3/12 , H04R5/04 , H04S7/00
CPC分类号： G10L19/032 , G10L19/008 , H04R3/005 , H04R3/04 , H04R3/12 , H04R5/04 , H04S7/307 , H04S2420/11
摘要： An audio scene encoder for encoding an audio scene, the audio scene having at least two component signals, has: a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, a spatial analyzer for analyzing the audio scene to derive one or more spatial parameters or one or more spatial parameter sets for the second portion; and an output interface for forming the encoded audio scene signal, the encoded audio scene signal having the first encoded representation, the second encoded representation, and the one or more spatial parameters or one or more spatial parameter sets for the second portion.
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公开(公告)号：US12106763B2
公开(公告)日：2024-10-01
申请号：US17571970
申请日：2022-01-10
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.
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公开(公告)号：US11937075B2
公开(公告)日：2024-03-19
申请号：US17332358
申请日：2021-05-27
发明人： Guillaume Fuchs , Oliver Thiergart , Srikanth Korse , Stefan Döhla , Markus Multrus , Fabian Küch , Alexandre Bouthéon , Andrea Eichenseer , Stefan Bayer
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.
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公开(公告)号：US11361778B2
公开(公告)日：2022-06-14
申请号：US16943065
申请日：2020-07-30
发明人： Guillaume Fuchs , Stefan Bayer , Markus Multrus , Oliver Thiergart , Alexandre Bouthéon , Jürgen Herre , Florin Ghido , Wolfgang Jaegers , Fabian Küch
IPC分类号： G10L19/032 , G10L19/008 , H04R3/00 , H04R3/04 , H04R3/12 , H04R5/04 , H04S7/00
摘要： An audio scene encoder for encoding an audio scene, the audio scene having at least two component signals, has: a core encoder for core encoding the at least two component signals, wherein the core encoder is configured to generate a first encoded representation for a first portion of the at least two component signals, and to generate a second encoded representation for a second portion of the at least two component signals, a spatial analyzer for analyzing the audio scene to derive one or more spatial parameters or one or more spatial parameter sets for the second portion; and an output interface for forming the encoded audio scene signal, the encoded audio scene signal having the first encoded representation, the second encoded representation, and the one or more spatial parameters or one or more spatial parameter sets for the second portion.
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公开(公告)号：US10524072B2
公开(公告)日：2019-12-31
申请号：US15933155
申请日：2018-03-22
发明人： Emanuel Habets , Oliver Thiergart , Fabian Küch , Alexander Niederleitner , Affan-Hasan Khan , Dirk Mahne
IPC分类号： H04S3/00 , H04R3/00 , G10L19/008 , H04R5/027
摘要： An apparatus for generating a sound field description having a representation of sound field components, including a direction determiner for determining one or more sound directions for each time-frequency tile of a plurality of time-frequency tiles of a plurality of microphone signals; a spatial basis function evaluator for evaluating, for each time-frequency tile of the plurality of time-frequency tiles, one or more spatial basis functions using the one or more sound directions; and a sound field component calculator for calculating, for each time-frequency tile of the plurality of time-frequency tiles, one or more sound field components corresponding to the one or more spatial basis functions evaluated using the one or more sound directions and a reference signal for a corresponding time-frequency tile, the reference signal being derived from one or more microphone signals of the plurality of microphone signals.
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公开(公告)号：US12058501B2
公开(公告)日：2024-08-06
申请号：US17585169
申请日：2022-01-26
发明人： Guillaume Fuchs , Jürgen Herre , Fabian Küch , Stefan Döhla , Markus Multrus , Oliver Thiergart , Oliver Wübbolt , Florin Ghido , Stefan Bayer , Wolfgang Jaegers
CPC分类号： H04R5/04 , H04S7/30 , H04S7/40 , H04R2205/024
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.
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