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公开(公告)号：US11521628B2
公开(公告)日：2022-12-06
申请号：US16283668
申请日：2019-02-22
发明人： Sascha Disch , Franz Reutelhuber , Jan Buethe , Markus Multrus , Bernd Edler
IPC分类号： G10L19/04 , G10L19/008 , G10L19/16 , G10L19/02 , G10L21/038 , G10L21/0232 , H04L65/60
摘要： An apparatus for encoding an audio signal includes: a core encoder for core encoding first audio data in a first spectral band; a parametric coder for parametrically coding second audio data in a second spectral band being different from the first spectral band, wherein the parametric coder includes: an analyzer for analyzing first audio data in the first spectral band to obtain a first analysis result and for analyzing second audio data in the second spectral band to obtain a second analysis result; a compensator for calculating a compensation value using the first analysis result and the second analysis result; and a parameter calculated for calculating a parameter from the second audio data in the second spectral band using the compensation value.
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公开(公告)号：US12057133B2
公开(公告)日：2024-08-06
申请号：US18312853
申请日：2023-05-05
IPC分类号： H03M13/00 , G10L19/022 , G10L19/035 , G10L21/0324 , H03M13/07 , H03M13/15 , H04B17/309 , H04L1/00
CPC分类号： G10L19/035 , G10L19/022 , G10L21/0324 , H03M13/07 , H03M13/1515 , H04B17/309 , H04L1/0009 , H04L1/0032 , H04L1/0042 , H04L1/0045 , H04L1/0046 , H04L1/0084
摘要： A channel encoder for encoding a frame includes a multi-mode redundancy encoder for redundancy encoding the frame in accordance with a certain coding mode from a set of different coding modes, wherein the coding modes are different from each other with respect to an amount of redundancy added to the frame, wherein the multi-mode redundancy encoder is configured to output a coded frame including at least one code word; and a colorator for applying a coloration sequence to the at least one code word; wherein the coloration sequence is such that at least one bit of the code word is changed by the application of the at least one of coloration sequence, wherein the specific coloration sequence is selected in accordance with the certain coding mode.
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公开(公告)号：US11450328B2
公开(公告)日：2022-09-20
申请号：US16405422
申请日：2019-05-07
发明人： Jan Buethe , Guillaume Fuchs , Wolfgang Jaegers , Franz Reutelhuber , Juergen Herre , Eleni Fotopoulou , Markus Multrus , Srikanth Korse
摘要： An apparatus for encoding a multi-channel signal having at least two channels, has: a downmixer for calculating a downmix signal from the multi-channel signal; a parameter calculator for calculating a side gain from a first channel of the at least two channels and a second channel of the at least two channels and for calculating a residual gain from the first channel and the second channel; and an output interface for generating an output signal, the output signal having information on the downmix signal, and on the side gain and the residual gain.
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公开(公告)号：US11183196B2
公开(公告)日：2021-11-23
申请号：US16847403
申请日：2020-04-13
发明人： Christian Borss , Bernd Edler , Guillaume Fuchs , Jan Buethe , Sascha Disch , Florin Ghido , Stefan Bayer , Markus Multrus
IPC分类号： G10L19/008 , H04S3/00
摘要： A downmixer for downmixing at least two channels of a multichannel signal having the two or more channels includes: a processor for calculating a partial downmix signal from the at least two channels; a complementary signal calculator for calculating a complementary signal from the multichannel signal, the complementary signal being different from the partial downmix signal; and an adder for adding the partial downmix signal and the complementary signal to obtain a downmix signal of the multichannel signal.
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公开(公告)号：US10665246B2
公开(公告)日：2020-05-26
申请号：US16395933
申请日：2019-04-26
发明人： Christian Borss , Bernd Edler , Guillaume Fuchs , Jan Buethe , Sascha Disch , Florin Ghido , Stefan Bayer , Markus Multrus
IPC分类号： G10L19/008 , H04S3/00
摘要： A downmixer for downmixing at least two channels of a multichannel signal having the two or more channels includes: a processor for calculating a partial downmix signal from the at least two channels; a complementary signal calculator for calculating a complementary signal from the multichannel signal, the complementary signal being different from the partial downmix signal; and an adder for adding the partial downmix signal and the complementary signal to obtain a downmix signal of the multichannel signal.
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6.发明授权公开(公告)号：US12100402B2
公开(公告)日：2024-09-24
申请号：US17824297
申请日：2022-05-25
发明人： Jan Buethe , Guillaume Fuchs , Wolfgang Jagers , Franz Reutelhuber , Juergen Herre , Eleni Fotopoulou , Markus Multrus , Srikanth Korse
IPC分类号： G10L19/008 , H04S1/00 , H04S3/00 , H04S3/02 , H04S7/00
CPC分类号： G10L19/008 , H04S1/007 , H04S3/008 , H04S7/30 , H04S2400/01 , H04S2420/03
摘要： An apparatus for downmixing a multi-channel signal having at least two channels, has: a downmixer for calculating a downmix signal from the multi-channel signal, wherein the downmixer is configured to calculate the downmix using an absolute phase compensation, so that a channel having a lower energy among the at least two channels is only rotated or is rotated stronger than a channel having a greater energy in calculating the downmix signal; and an output interface for generating an output signal, the output signal having information on the downmix signal.
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公开(公告)号：US20240127832A1
公开(公告)日：2024-04-18
申请号：US18496054
申请日：2023-10-27
发明人： Ahmed Mustafa Mahmoud Ahmed , Nicola PIA , Jan Buethe , Srikanth Korse , Kishan Gupta , Markus Multrus , Guillaume Fuchs
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： There are disclosed techniques for generating an audio signal and training an audio generator.
An audio decoder generates an audio signal from a bitstream and comprises:
a first data provisioner to provide first data having multiple channels;
a first processing block to output first output data having multiple channels, and
a second processing block.
The first processing block comprises:
a learnable layer to receive the bitstream and, for the given frame, output target data representing the audio signal in the given frame with multiple channels and multiple samples for the given frame;
a conditioning learnable layer to process the target data to obtain conditioning feature parameters for the given frame; and
a styling element applying the conditioning feature parameters to the first data.
The second processing block combines the channels of the second data to obtain the audio signal.-
公开(公告)号：US11875806B2
公开(公告)日：2024-01-16
申请号：US17402285
申请日：2021-08-13
IPC分类号： H04L1/00 , G10L19/035 , H04B17/309 , G10L21/0324 , G10L19/022 , H03M13/07 , H03M13/15
CPC分类号： G10L19/035 , G10L19/022 , G10L21/0324 , H03M13/07 , H03M13/1515 , H04B17/309 , H04L1/0009 , H04L1/0032 , H04L1/0042 , H04L1/0045 , H04L1/0046 , H04L1/0084
摘要： A channel encoder for encoding a frame includes a multi-mode redundancy encoder for redundancy encoding the frame in accordance with a certain coding mode from a set of different coding modes, wherein the coding modes are different from each other with respect to an amount of redundancy added to the frame, wherein the multi-mode redundancy encoder is configured to output a coded frame including at least one code word; and a colorator for applying a coloration sequence to the at least one code word; wherein the coloration sequence is such that at least one bit of the code word is changed by the application of the at least one of coloration sequence, wherein the specific coloration sequence is selected in accordance with the certain coding mode.
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公开(公告)号：US11670307B2
公开(公告)日：2023-06-06
申请号：US17501356
申请日：2021-10-14
发明人： Christian Borss , Bernd Edler , Guillaume Fuchs , Jan Buethe , Sascha Disch , Florin Ghido , Stefan Bayer , Markus Multrus
IPC分类号： G10L19/008 , H04S3/00
CPC分类号： G10L19/008 , H04S3/008 , H04S2400/01 , H04S2400/03
摘要： A downmixer for downmixing at least two channels of a multichannel signal having the two or more channels includes: a processor for calculating a partial downmix signal from the at least two channels; a complementary signal calculator for calculating a complementary signal from the multichannel signal, the complementary signal being different from the partial downmix signal; and an adder for adding the partial downmix signal and the complementary signal to obtain a downmix signal of the multichannel signal.
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10.发明授权公开(公告)号：US11488609B2
公开(公告)日：2022-11-01
申请号：US16402883
申请日：2019-05-03
发明人： Jan Buethe , Guillaume Fuchs , Wolfgang Jaegers , Franz Reutelhuber , Juergen Herre , Eleni Fotopoulou , Markus Multrus , Srikanth Korse
IPC分类号： G10L19/008 , H04S3/00 , H04S1/00 , H04S7/00
摘要： An apparatus for downmixing a multi-channel signal having at least two channels, has: a downmixer for calculating a downmix signal from the multi-channel signal, wherein the downmixer is configured to calculate the downmix using an absolute phase compensation, so that a channel having a lower energy among the at least two channels is only rotated or is rotated stronger than a channel having a greater energy in calculating the downmix signal; and an output interface for generating an output signal, the output signal having information on the downmix signal.
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