公开(公告)号：EP4207191A1

公开(公告)日：2023-07-05

申请号：EP23157131.6

申请日：2019-11-05

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

发明人： BAYER, Stefan ,  Maben, Pallavi ,  RAVELLI, Emmanuel ,  FUCHS, Guillaume ,  FOTOPOULOU, Eleni ,  MULTRUS, Markus

IPC分类号： G10L19/022 ,  G10L25/45 ,  G10L19/008

摘要： An apparatus for providing a processed audio signal representation on the basis of input audio signal representation configured to apply an un-windowing, in order to provide the processed audio signal representation on the basis of the input audio signal representation. The apparatus is configured to adapt the un-windowing in dependence on one or more signal characteristics and/or in dependence on one or more processing parameters used for a provision of the input audio signal representation.

公开(公告)号：EP4207189A1

公开(公告)日：2023-07-05

申请号：EP23157260.3

申请日：2007-10-23

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

发明人： SCHNELL, Markus ,  LUTZKY, Manfred ,  LOHWASSER, Markus ,  SCHMIDT, Markus ,  GAYER, Marc ,  MELLAR, Michael ,  EDLER, Bernd ,  MULTRUS, Markus ,  SCHULLER, Gerald ,  GEIGER, Ralf ,  GRILL, Bernhard

IPC分类号： G10L19/02 ,  G10L19/022 ,  G10L25/45 ,  H03H17/02 ,  G10L21/038

摘要： An apparatus for generating time-domain audio samples or synthesis filterbank (300) comprises a calculator (310) for calculating a frame (330) comprising a sequence of intermediate time-domain samples from audio subband values of block (320). The calculator (310) is coupled to a synthesis windower (360) to which the frame (330) of intermediate time-domain samples is provided. The synthesis windower (360) is adapted to windowing the sequence of intermediate time-domain samples using a synthesis window function (370) and provides a frame (380) of windowed intermediate time-domain samples. The synthesis windower (360) is coupled to an overlap-adder output stage (400) that obtains a block (410) of time-domain samples. The block (410) of the time-domain (output) samples can then for instance be provided to further components for further processing, storing or transforming into audible audio signals.

公开(公告)号：EP4113512A1

公开(公告)日：2023-01-04

申请号：EP22192222.2

申请日：2018-11-16

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

发明人： FUCHS, Guillaume ,  HERRE, Jürgen ,  KÜCH, Fabian ,  DÖHLA, Stefan ,  MULTRUS, Markus ,  THIERGART, Oliver ,  WÜBBOLT, Oliver ,  GHIDO, Florin ,  BAYER, Stefan ,  JÄGERS, Wolfgang

IPC分类号： G10L19/00 ,  G10L19/008

摘要： An apparatus for encoding directional audio coding parameters comprising diffuseness parameters and direction parameters, comprises: 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.

公开(公告)号：EP3724876A1

公开(公告)日：2020-10-21

申请号：EP19702889.7

申请日：2019-01-31

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

发明人： FUCHS, Guillaume ,  BAYER, Stefan ,  MULTRUS, Markus ,  THIERGART, Oliver ,  BOUTHÉON, Alexandre ,  HERRE, Jürgen ,  GHIDO, Florin ,  JAEGERS, Wolfgang ,  KÜCH, Fabian

IPC分类号： G10L19/008 ,  G10L19/18 ,  G10L19/02

公开(公告)号：EP3711048A1

公开(公告)日：2020-09-23

申请号：EP18803987.9

申请日：2018-11-16

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

发明人： FUCHS, Guillaume ,  HERRE, Jürgen ,  KÜCH, Fabian ,  DÖHLA, Stefan ,  MULTRUS, Markus ,  THIERGART, Oliver ,  WÜBBOLT, Oliver ,  GHIDO, Florin ,  BAYER, Stefan ,  JÄGERS, Wolfgang

IPC分类号： G10L19/00 ,  G10L19/008

公开(公告)号：EP3183729B1

公开(公告)日：2020-09-02

申请号：EP15750069.5

申请日：2015-08-14

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

发明人： DÖHLA, Stefan ,  FUCHS, Guillaume ,  GRILL, Bernhard ,  MULTRUS, Markus ,  PIETRZYK, Grzegorz ,  RAVELLI, Emmanuel ,  SCHNELL, Markus

IPC分类号： G10L19/24 ,  G10L19/04 ,  G10L19/16

公开(公告)号：EP2335242B1

公开(公告)日：2020-03-18

申请号：EP09752278.3

申请日：2009-10-06

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

发明人： FUCHS, Guillaume ,  MULTRUS, Markus ,  GEIGER, Ralf ,  BORSUM, Arne ,  NAGEL, Frederik ,  ROBILLIARD, Julien ,  SUBBARAMAN, Vignesh ,  LECOMTE, Jérémie

IPC分类号： G10L19/00 ,  G10L19/02

公开(公告)号：EP3588495A1

公开(公告)日：2020-01-01

申请号：EP18179373.8

申请日：2018-06-22

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

发明人： BÜTHE, Jan ,  FOTOPOULOU, Eleni ,  KORSE, Srikanth ,  MABEN, Pallavi ,  MULTRUS, Markus ,  REUTELHUBER, Franz

IPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/06

摘要： In multichannel audio coding, improved computational efficiency is achieved by computing comparison parameters for ITD compensation between any two channels in the frequency domain for a parametric audio encoder. This may mitigate negative effects on encoder parameter estimates.

公开(公告)号：EP3584792A1

公开(公告)日：2019-12-25

申请号：EP19189446.8

申请日：2015-07-24

申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

发明人： FUCHS, Guillaume ,  MULTRUS, Markus ,  NEUSINGER, Matthias ,  NIEDERMEIER, Andreas ,  SCHNELL, Markus

IPC分类号： G10L19/025

摘要： A processor for processing an audio signal (200), comprises: an analyzer (202) for deriving a window control signal (204) from the audio signal (200) indicating a change from a first asymmetric window (1400) to a second window (1402), or indicating a change from a third window (1450) to a fourth asymmetric window (1452), wherein the second window (1402) is shorter than the first window (1400), or wherein the third window (1450) is shorter than the fourth window (1452); a window constructor (206) for constructing the second window (1402) using a first overlap portion (800) of the first asymmetric window (1400), wherein the window constructor (206) is configured to determine a first overlap portion (1000) of the second window (1402) using a truncated first overlap portion of the first asymmetric window, or wherein the window constructor is configured to calculate a second overlap portion (1330) of the third window (1450) using a truncated second overlap portion (814) of the fourth asymmetric window (1452); and a windower (208) for applying the first and second windows or the third and fourth windows to obtain windowed audio signal portions (210).

公开(公告)号：EP3175457B1

公开(公告)日：2019-11-20

申请号：EP15739587.2

申请日：2015-07-21

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

发明人： SCHUBERT, Benjamin ,  JANDER, Manuel ,  LOMBARD, Anthony ,  DIETZ, Martin ,  MULTRUS, Markus

IPC分类号： G10L25/03 ,  G10L25/21 ,  G10L19/012 ,  G10L21/0216