公开(公告)号：EP3975180A1

公开(公告)日：2022-03-30

申请号：EP21207282.1

申请日：2014-07-15

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

发明人： DISCH, Sascha ,  NAGEL, Frederik ,  GEIGER, Ralf ,  THOSHKAHNA, Balaji Nagendran ,  SCHMIDT, Konstantin ,  BAYER, Stefan ,  NEUKAM, Christian ,  EDLER, Bernd ,  HELMRICH, Christian

IPC分类号： G10L21/0388 ,  G10L19/02

摘要： An apparatus for decoding an encoded audio signal, comprises a spectral domain audio decoder (112) for generating a first decoded representation of a first set of first spectral portions, the decoded representation having a first spectral resolution; a parametric decoder (114) for generating a second decoded representation of a second set of second spectral portions having a second spectral resolution being lower than the first spectral resolution; a frequency regenerator (116) for regenerating every constructed second spectral portion having the first spectral resolution using a first spectral portion and spectral envelope information for the second spectral portion; and a spectrum time converter (118) for converting the first decoded representation and the reconstructed second spectral portion into a time representation.

公开(公告)号：EP3707711A1

公开(公告)日：2020-09-16

申请号：EP18796463.0

申请日：2018-11-08

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

发明人： SCHNELL, Markus ,  LUTZKY, Manfred ,  TSCHEKALINSKIJ, Alexander ,  GEIGER, Ralf

IPC分类号： G10L19/022 ,  G10L19/02 ,  H04N19/60 ,  G06F17/14 ,  G06T9/00 ,  G10L25/45

公开(公告)号：EP2676265B1

公开(公告)日：2019-04-10

申请号：EP12707050.6

申请日：2012-02-14

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

发明人： RAVELLI, Emmanuel ,  GEIGER, Ralf ,  SCHNELL, Markus ,  FUCHS, Guillaume ,  RUOPPILA, Vesa ,  BÄCKSTRÖM, Tom ,  GRILL, Bernhard ,  HELMRICH, Christian

IPC分类号： G10L19/022 ,  G10L19/18

公开(公告)号：EP3407350A1

公开(公告)日：2018-11-28

申请号：EP18180168.9

申请日：2014-07-15

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

发明人： DISCH, Sascha ,  NAGEL, Frederik ,  GEIGER, Ralf ,  THOSHKAHNA, Balaji Nagendran ,  SCHMIDT, Konstantin ,  BAYER, Stefan ,  NEUKAM, Christian ,  EDLER, Bernd ,  HELMRICH, Christian

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

摘要： An audio encoder for encoding a two-channel audio signal, comprises: a time-spectrum converter (860) for converting a two-channel audio signal into a spectral representation; a two-channel analyzer (864) for analyzing bands of the two-channel audio signal within a reconstruction range to determine a two-channel identification for a reconstruction band either identifying a first two-channel representation or a second two-channel representation; a spectral analyzer (860) for providing an indication of a first set of first spectral portions to be encoded with a first spectral resolution and of a second set of second spectral portions to be encoded by a second spectral resolution, the second spectral resolution being smaller than the first spectral resolution; a core encoder (870) for encoding the first set of first spectral portions to provide a first encoded representation; and a parameter calculator (868) for calculating parametric data on the second set of second spectral portions, wherein an encoded two-channel audio signal comprises the first encoded representation, the encoded parametric representation and the two-channel identification for the second set of second spectral portions.

公开(公告)号：EP3175449B1

公开(公告)日：2018-08-15

申请号：EP15741557.1

申请日：2015-07-24

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

发明人： DISCH, Sascha ,  GEIGER, Ralf ,  NIEDERMEIER, Andreas ,  NEUSINGER, Matthias ,  SCHMIDT, Konstantin ,  WILDE, Stephan ,  SCHUBERT, Benjamin ,  NEUKAM, Christian

IPC分类号： G10L19/028 ,  G10L21/038

CPC分类号： G10L19/028 ,  G10L19/0204 ,  G10L21/038 ,  G10L25/21

摘要： An apparatus for generating an enhanced signal from an input signal (600), wherein the enhanced signal has spectral values for an enhancement spectral region, the spectral values for the enhancement spectral regions not being contained in the input signal (600), comprises a mapper (602) for mapping a source spectral region of the input signal to a target region in the enhancement spectral region, the source spectral region comprising a noise-filling region (302); and a noise filler (604) configured for generating first noise values for the noise-filling region (302) in the source spectral region of the input signal and for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from the first noise values or for generating second noise values for a noise region in the target region, wherein the second noise values are decorrelated from first noise values in the source region.

公开(公告)号：EP3268958A1

公开(公告)日：2018-01-17

申请号：EP16708172.8

申请日：2016-03-07

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

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

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

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

摘要： Audio encoder 2" for encoding a multichannel signal 4 is shown. The audio encoder comprises a downmixer 12 for downmixing the multichannel signal 4 to obtain a downmix signal 14, a linear prediction domain core encoder 16 for encoding the downmix signal 14, wherein the downmix signal 14 has a low band and a high band, wherein the linear prediction domain core encoder 16 is configured to apply a bandwidth extension processing for parametrically encoding the high band, a filterbank 82 for generating a spectral representation of the multichannel signal 4, and a joint multichannel encoder 18 configured to process the spectral representation comprising the low band and the high band of the multichannel signal to generate multichannel information 20.

公开(公告)号：EP3025344A1

公开(公告)日：2016-06-01

申请号：EP14741264.7

申请日：2014-07-15

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

发明人： DISCH, Sascha ,  GEIGER, Ralf ,  HELMRICH, Christian ,  NAGEL, Frederik ,  NEUKAM, Christian ,  SCHMIDT, Konstantin ,  FISCHER, Michael

IPC分类号： G10L21/0388 ,  G10L19/028 ,  G10L19/02

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/025 ,  G10L19/03 ,  G10L19/032 ,  G10L19/06 ,  G10L21/0388 ,  G10L25/06 ,  H04S1/007

摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.

公开(公告)号：EP3025340A1

公开(公告)日：2016-06-01

申请号：EP14738854.0

申请日：2014-07-15

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

发明人： NIEDERMEIER, Andreas ,  ERTEL, Christian ,  GEIGER, Ralf ,  GHIDO, Florin ,  HELMRICH, Christian

IPC分类号： G10L19/028

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/025 ,  G10L19/03 ,  G10L19/032 ,  G10L19/06 ,  G10L21/0388 ,  G10L25/06 ,  H04S1/007

摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.

公开(公告)号：EP3025328A1

公开(公告)日：2016-06-01

申请号：EP14739160.1

申请日：2014-07-15

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

发明人： DISCH, Sascha ,  NAGEL, Frederik ,  GEIGER, Ralf ,  THOSHKAHNA, Balaji Nagendran ,  SCHMIDT, Konstantin ,  BAYER, Stefan ,  NEUKAM, Christian ,  EDLER, Bernd ,  HELMRICH, Christian

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

CPC分类号： G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/0212 ,  G10L19/022 ,  G10L19/025 ,  G10L19/03 ,  G10L19/032 ,  G10L19/06 ,  G10L21/0388 ,  G10L25/06 ,  H04S1/007

摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.

公开(公告)号：EP3017448A1

公开(公告)日：2016-05-11

申请号：EP14739811.9

申请日：2014-07-15

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

发明人： DISCH, Sascha ,  GEIGER, Ralf ,  HELMRICH, Christian ,  NAGEL, Frederik ,  NEUKAM, Christian ,  SCHMIDT, Konstantin ,  FISCHER, Michael

IPC分类号： G10L21/038 ,  G10L19/028

摘要： Apparatus for decoding an encoded audio signal comprising an encoded core signal (1), comprising: a core decoder (1400) for decoding the encoded core signal (1401) to obtain a decoded core signal; a tile generator (1404) for generating one or more spectral tiles having frequencies not included in the decoded core signal using a spectral portion of the decoded core signal; and a cross-over filter (1406) for spectrally cross-over filtering the decoded core signal and a first frequency tile having frequencies extending from a gap filling frequency (309) to an upper border frequency or for spectrally cross-over filtering a first frequency tile and a second frequency tile.

摘要翻译： 一种用于包括编码信号的核心的编码音频信号的解码（1），包括：用于对编码核心信号（1401），以获得经解码的核心信号进行解码的核心解码器（1400）; 图块生成器（1404），用于产生具有不包括在核心使用解码核心信号的频谱部分的解码信号的频率的一个或多个光谱的瓷砖; 和交叉过滤器（1406）用于光谱交叉滤波解码核心信号和具有频率从间隙延伸的上边界频率或用于光谱交叉滤波的第一频率填充频率（309）到第一频率瓦片 瓦片和第二频率块。