公开(公告)号：US20230360658A1

公开(公告)日：2023-11-09

申请号：US18195250

申请日：2023-05-09

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

发明人： Markus SCHNELL ,  Manfred LUTZKY ,  Eleni FOTOPOULOU ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Adrian TOMASEK ,  Tobias ALBERT ,  Timon SEIDL

IPC分类号： G10L19/02 ,  G10L19/022

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.

公开(公告)号：US20220093112A1

公开(公告)日：2022-03-24

申请号：US17410033

申请日：2021-08-24

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

发明人： Sascha DISCH ,  Guillaume FUCHS ,  Emmanuel RAVELLI ,  Christian NEUKAM ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Andreas NIEDERMEIER ,  Benjamin SCHUBERT ,  Ralf GEIGER

IPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/04 ,  G10L19/18 ,  G10L21/038 ,  G10L19/032 ,  G10L19/13

摘要： A schematic block diagram of an audio encoder for encoding a multichannel audio signal is shown. The audio encoder includes a linear prediction domain encoder, a frequency domain encoder, and a controller for switching between the linear prediction domain encoder and the frequency domain encoder. The controller is configured such that a portion of the multichannel signal is represented either by an encoded frame of the linear prediction domain encoder or by an encoded frame of the frequency domain encoder. The linear prediction domain encoder includes a downmixer for downmixing the multichannel signal to obtain a downmixed signal. The linear prediction domain encoder further includes a linear prediction domain core encoder for encoding the downmix signal and furthermore, the linear prediction domain encoder includes a first joint multichannel encoder for generating first multichannel information from the multichannel signal.

公开(公告)号：US20240005931A1

公开(公告)日：2024-01-04

申请号：US18139252

申请日：2023-04-25

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

发明人： Markus SCHNELL ,  Manfred LUTZKY ,  Eleni FOTOPOULOU ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Adrian TOMASEK ,  Tobias ALBERT ,  Timon SEIDL

IPC分类号： G10L19/02 ,  G10L19/022

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.

公开(公告)号：US20230360657A1

公开(公告)日：2023-11-09

申请号：US18195220

申请日：2023-05-09

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

发明人： Markus SCHNELL ,  Manfred LUTZKY ,  Eleni FOTOPOULOU ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Adrian TOMASEK ,  Tobias ALBERT ,  Timon SEIDL

IPC分类号： G10L19/02 ,  G10L19/022

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of 1/4 of the frame length.

公开(公告)号：US20230360656A1

公开(公告)日：2023-11-09

申请号：US18195213

申请日：2023-05-09

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

发明人： Markus SCHNELL ,  Manfred LUTZKY ,  Eleni FOTOPOULOU ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Adrian TOMASEK ,  Tobias ALBERT ,  Timon SEIDL

IPC分类号： G10L19/02 ,  G10L19/022

CPC分类号： G10L19/0212 ,  G10L19/022

摘要： A downscaled version of an audio decoding procedure may more effectively and/or at improved compliance maintenance be achieved if the synthesis window used for downscaled audio decoding is a downsampled version of a reference synthesis window involved in the non-downscaled audio decoding procedure by downsampling by the downsampling factor by which the downsampled sampling rate and the original sampling rate deviate, and downsampled using a segmental interpolation in segments of ¼ of the frame length.

公开(公告)号：US20170365264A1

公开(公告)日：2017-12-21

申请号：US15695668

申请日：2017-09-05

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

发明人： Sascha DISCH ,  Guillaume FUCHS ,  Emmanuel RAVELLI ,  Christian NEUKAM ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Andreas NIEDERMEIER ,  Benjamin SCHUBERT ,  Ralf GEIGER

IPC分类号： G10L19/008 ,  G10L19/032 ,  G10L19/13 ,  G10L19/18

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/032 ,  G10L19/04 ,  G10L19/13 ,  G10L19/18 ,  G10L21/038

摘要： Audio encoder for encoding a multichannel signal is shown. The audio encoder includes a downmixer for downmixing the multichannel signal to obtain a downmix signal, a linear prediction domain core encoder for encoding the downmix signal, wherein the downmix signal has a low band and a high band, wherein the linear prediction domain core encoder is configured to apply a bandwidth extension processing for parametrically encoding the high band, a filterbank for generating a spectral representation of the multichannel signal, and a joint multichannel encoder configured to process the spectral representation including the low band and the high band of the multichannel signal to generate multichannel information.

公开(公告)号：US20220139406A1

公开(公告)日：2022-05-05

申请号：US17575260

申请日：2022-01-13

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

发明人： Sascha DISCH ,  Guillaume FUCHS ,  Emmanuel RAVELLI ,  Christian NEUKAM ,  Konstantin SCHMIDT ,  Conrad BENNDORF ,  Andreas NIEDERMEIER ,  Benjamin SCHUBERT ,  Ralf GEIGER

IPC分类号： G10L19/008 ,  G10L19/04 ,  G10L19/18 ,  G10L19/032 ,  G10L19/13 ,  G10L19/02 ,  G10L21/038

摘要： Audio encoder for encoding a multichannel signal is shown. The audio encoder includes a downmixer for downmixing the multichannel signal to obtain a downmix signal, a linear prediction domain core encoder for encoding the downmix signal, wherein the downmix signal has a low band and a high band, wherein the linear prediction domain core encoder is configured to apply a bandwidth extension processing for parametrically encoding the high band, a filterbank for generating a spectral representation of the multichannel signal, and a joint multichannel encoder configured to process the spectral representation including the low band and the high band of the multichannel signal to generate multichannel information.

公开(公告)号：US20220014310A1

公开(公告)日：2022-01-13

申请号：US17402202

申请日：2021-08-13

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

发明人： Adrian TOMASEK ,  Ralph SPERSCHNEIDER ,  Jan BUETHE ,  Conrad BENNDORF ,  Martin DIETZ ,  Markus SCHNELL ,  Maximilian SCHLEGEL

IPC分类号： H04L1/00

摘要： A decoder for decoding a frame to reconstruct a signal portion of a signal is provided. The signal portion is encoded within the frame, wherein the frame includes a bitstream payload and two or more redundancy bits, wherein the bitstream payload includes a plurality of payload bits, wherein each of the payload bits exhibits a position within the bitstream payload. The decoder includes a channel decoding module, being configured to detect, depending on the two or more redundancy bits, whether the bitstream payload includes one or more corrupted bits being one or more of the payload bits that are distorted or that are likely to be distorted. Moreover, the decoder includes a source decoding module.

公开(公告)号：US20210385012A1

公开(公告)日：2021-12-09

申请号：US17402285

申请日：2021-08-13

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

发明人： Jan BUETHE ,  Conrad BENNDORF ,  Manfred LUTZKY ,  Markus SCHNELL ,  Maximilian SCHLEGEL

IPC分类号： H04L1/00

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.

公开(公告)号：US20240339118A1

公开(公告)日：2024-10-10

申请号：US18745778

申请日：2024-06-17

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

发明人： Adrian TOMASEK ,  Ralph SPERSCHNEIDER ,  Jan BUETHE ,  Conrad BENNDORF ,  Martin DIETZ ,  Markus SCHNELL ,  Maximilian SCHLEGEL

IPC分类号： G10L19/035 ,  G10L19/022 ,  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： FIG. 1 illustrates a decoder for decoding a current frame to reconstruct an audio signal according to an embodiment. The audio signal is encoded within the current frame. The current frame includes a current bitstream payload. The current bitstream payload includes a plurality of payload bits. The plurality of payload bits encodes a plurality of spectral lines of a spectrum of the audio signal. Each of the payload bits exhibits a position within the current bitstream payload. The decoder includes a decoding module and an output interface. The decoding module is configured to reconstruct the audio signal. The output interface is configured to output the audio signal.