公开(公告)号：EP3353782A1

公开(公告)日：2018-08-01

申请号：EP16777607.9

申请日：2016-09-23

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

发明人： HELMRICH, Christian ,  EDLER, Bernd ,  SCHWEGLER, Tobias ,  SCHUH, Florian

IPC分类号： G10L19/022 ,  G10L19/02 ,  G10L19/22

CPC分类号： G10L19/022 ,  G10L19/0212 ,  G10L19/22

摘要： A decoder for decoding a plurality of spectral-domain audio samples is provided. The decoder comprises a first decoding module (110) for generating a first group and a second group of time-domain intermediate audio samples from the spectral-domain audio samples. Moreover, the decoder comprises an overlap-adder (130) for overlap-adding the first group of time-domain intermediate audio samples with an overlap of more than 5 % and at most 50 % with the second group of time-domain intermediate audio samples. Furthermore, the decoder comprises a second decoding module (120) for generating a third group and a fourth group of time-domain intermediate audio samples from the spectral-domain audio samples. Moreover, the decoder comprises an output interface (140). The overlap-adder (130) is configured to overlap-add at least the third group of time-domain intermediate audio samples with an overlap of more than 60 % and less than 100 % with the fourth group of time-domain intermediate audio samples. Moreover, the overlap-adder (130) is configured to overlap-add at least the second group and the third group of time-domain intermediate audio samples, or to overlap-add at least the fourth group and the first group of time-domain intermediate audio samples.

公开(公告)号：EP3268959B1

公开(公告)日：2019-08-14

申请号：EP16709344.2

申请日：2016-03-08

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

发明人： DICK, Sascha ,  SCHUH, Florian ,  RETTELBACH, Nikolaus ,  SCHWEGLER, Tobias ,  FÜG, Richard ,  HILPERT, Johannes ,  NEUSINGER, Matthias

IPC分类号： G10L19/008

公开(公告)号：EP3268959A1

公开(公告)日：2018-01-17

申请号：EP16709344.2

申请日：2016-03-08

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

发明人： DICK, Sascha ,  SCHUH, Florian ,  RETTELBACH, Nikolaus ,  SCHWEGLER, Tobias ,  FÜG, Richard ,  HILPERT, Johannes ,  NEUSINGER, Matthias

IPC分类号： G10L19/008

CPC分类号： G10L19/008 ,  G10L19/02 ,  H04S3/008 ,  H04S2400/01

摘要： Embodiments provide an apparatus for encoding a multi-channel signal having at least three channels. The apparatus comprises an iteration processor, a channel encoder and an output interface. The iteration processor is configured to calculate, in a first iteration step, inter-channel correlation values between each pair of the at least three channels, for selecting, in the first iteration step, a pair having a highest value or having a value above a threshold, and for processing the selected pair using a multi-channel processing operation to derive first multi-channel parameters for the selected pair and to derive first processed channels. Further, the iteration processor is configured to perform the calculating, the selecting and the processing in a second iteration step using at least one of the processed channels to derive second multi-channel parameters and second processed channels. The channel encoder is configured to encode channels resulting from an iteration processing performed by the iteration processor to obtain encoded channels. The output interface is configured to generate an encoded multi-channel signal having the encoded channels and the first and the second multi-channel parameters.