公开(公告)号：EP4462677A2

公开(公告)日：2024-11-13

申请号：EP24203329.8

申请日：2017-02-10

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

发明人： GHIDO, Florin ,  DISCH, Sascha ,  HERRE, Jürgen ,  ADAMI, Alexander ,  REUTELHUBER, Franz

IPC分类号： H03G5/00

摘要： An audio post-processor (100) for post-processing an audio signal (102) having a time-variable high frequency gain information (104) as side information comprises: a band extractor (110) for extracting a high frequency band (112) of the audio signal (102) and a low frequency band (114) of the audio signal (102); a high band processor (120) for performing a time-variable modification of the high frequency band (112) in accordance with the time-variable high frequency gain information (104) to obtain a processed high frequency band (122); and a combiner (130) for combining the processed high frequency band (122) and the low frequency band (114). Furthermore, a pre-processor is illustrated.

公开(公告)号：EP4462428A2

公开(公告)日：2024-11-13

申请号：EP24202070.9

申请日：2010-10-15

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

发明人： HERRE, Jürgen ,  FALCH, Cornelia ,  TERENTIV, Leon

IPC分类号： G10L19/008

摘要： An apparatus for providing one or more adjusted parameters for a provision of an upmix signal representation on the basis of a downmix signal representation and a parametric side information associated with the downmix signal representation comprises a parameter adjuster. The parameter adjuster is configured to receive one or more parameters and to provide, on the basis thereof, one or more adjusted parameters. The parameter adjuster is configured to provide the one or more adjusted parameters in dependence on an average value of a plurality of parameter values, such that a distortion of the upmix signal representation caused by the use of non-optimal parameters is reduced at least for parameters deviating from optimal parameters by more than a predetermined deviation.

公开(公告)号：EP4430857A1

公开(公告)日：2024-09-18

申请号：EP22813308.8

申请日：2022-11-08

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

发明人： SILZLE, Andreas ,  HERRE, Jürgen ,  ROSENBERGER, Dennis ,  PAULUS, Jouni ,  BORSS, Christian ,  ADAMI, Alexander

IPC分类号： H04S7/00 ,  G10K15/08

CPC分类号： H04S7/305 ,  G10K15/08 ,  H04S7/304 ,  H04S2420/0120130101

公开(公告)号：EP4430854A2

公开(公告)日：2024-09-18

申请号：EP22813302.1

申请日：2022-11-08

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

发明人： HERRE, Jürgen ,  SILZLE, Andreas ,  PETERS, Nils ,  GEIER, Matthias ,  BORSS, Christian ,  ROSENBERGER, Dennis

IPC分类号： H04S7/00

CPC分类号： H04S7/30

公开(公告)号：EP4430851A1

公开(公告)日：2024-09-18

申请号：EP22813284.1

申请日：2022-11-07

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

发明人： WU, Yun-Han ,  HERRE, Jürgen ,  KOROTIAEV, Mikhail ,  GEIER, Matthias ,  SCHWÄR, Simon ,  ADAMI, Alexander ,  ANEMÜLLER, Carlotta

IPC分类号： H04S7/00

CPC分类号： H04S7/302 ,  H04S7/307 ,  H04S2400/1120130101 ,  H04S2420/0120130101

公开(公告)号：EP4407611A1

公开(公告)日：2024-07-31

申请号：EP24167794.7

申请日：2009-06-25

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

发明人： RETTELBACH, Nikolaus ,  FUCHS, Guillaume ,  GEYERSBERGER, Stefan ,  GRILL, Bernhard ,  HIRSCHFELD, Jens ,  HERRE, Jürgen ,  MULTRUS, Markus ,  POPP, Harald ,  SCHULLER, Gerald ,  WABNIK, Stefan

IPC分类号： G10L19/028 ,  G10L19/02 ,  G10L19/032

CPC分类号： G10L19/02 ,  G10L19/028 ,  G10L19/032

摘要： An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal comprises a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also comprises an audio stream provider configured to provide the audio stream such that the audio stream comprises an information describing an audio content of the frequency bands and an information describing the multi-band quantization error.
A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal comprises a noise filler configured to introduce noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.

公开(公告)号：EP4346235A1

公开(公告)日：2024-04-03

申请号：EP22198848.8

申请日：2022-09-29

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Friedrich-Alexander-Universität Erlangen-Nürnberg

发明人： DICK, Sascha ,  HERRE, Jürgen ,  DELGADO, Pablo

IPC分类号： H04S7/00

摘要： An apparatus (100) according to an embodiment is provided. The apparatus comprises an input interface (110) for receiving a plurality of audio objects of an audio sound scene. Moreover, the apparatus (100) comprises a processor (120). Each of the plurality of audio objects represents a sound source being different from any other sound source being represented by any other audio object of the plurality of audio objects; or at least two of the plurality of audio objects represent a same sound source at different locations. The processor (120) is configured to obtain information on a perceptual difference between two audio objects of the plurality of audio objects depending on a distance metric, wherein the distance metric represents perceptual differences in spatial properties of the audio sound scene. And/or, the processor (120) is configured to process the plurality of audio objects to obtain a plurality of audio object clusters or a plurality of processed audio objects depending on the distance metric.

公开(公告)号：EP4336497A2

公开(公告)日：2024-03-13

申请号：EP24153258.9

申请日：2019-06-27

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

发明人： FOTOPOULOU, Eleni ,  MULTRUS, Markus ,  DICK, Sascha ,  MARKOVIC, Goran ,  MABEN, Pallavi ,  KORSE, Srikanth ,  BAYER, Stefan ,  DISCH, Sascha ,  HERRE, Jürgen

IPC分类号： G10L19/03

摘要： A multisignal encoder for encoding at least three audio signals, comprises: a signal preprocessor (100) for individually preprocessing each audio signal to obtain at least three preprocessed audio signals, wherein the preprocessing is performed so that a preprocessed audio signal is whitened with respect to the signal before preprocessing; an adaptive joint signal processor (200) for performing a processing of the at least three preprocessed audio signals to obtain at least three jointly processed signals or at least two jointly processed signals and an unprocessed signal; a signal encoder (300) for encoding each signal to obtain one or more encoded signals; and an output interface (400) for transmitting or storing an encoded multisignal audio signal comprising the one or more encoded signals, side information relating to the preprocessing and side information relating to the processing.

公开(公告)号：EP4305617A1

公开(公告)日：2024-01-17

申请号：EP22713618.1

申请日：2022-03-09

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

发明人： DISCH, Sascha ,  ANEMÜLLER, Carlotta ,  HERRE, Jürgen

IPC分类号： G10L19/00 ,  G10L19/02 ,  G10L21/02 ,  G10L21/0316

公开(公告)号：EP4298799A2

公开(公告)日：2024-01-03

申请号：EP22712838.6

申请日：2022-02-25

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

发明人： WALTHER, Andreas ,  FALLER, Christof ,  HERRE, Jürgen ,  SCHMIDT, Markus ,  BORß, Christian ,  KLAPP, Julian ,  GÖTZ, Philipp

IPC分类号： H04R3/12 ,  H04S7/00