公开(公告)号：EP2786374A2

公开(公告)日：2014-10-08

申请号：EP12794963.4

申请日：2012-11-30

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

发明人： DEL GALDO, Giovanni ,  THIERGART, Oliver ,  HERRE, Jürgen ,  KÜCH, Fabian ,  HABETS, Emanuel ,  CRACIUN, Alexandra ,  KUNTZ, Achim

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G06K9/624 ,  G10L21/0272 ,  G10L2021/02166 ,  H04R5/00 ,  H04S2420/03 ,  H04S2420/11

摘要： An apparatus for generating a merged audio data stream is provided. The apparatus comprises a demultiplexer (180) for obtaining a plurality of single-layer audio data streams, wherein the demultiplexer (180) is adapted to receive one or more input audio data streams, wherein each input audio data stream comprises one or more layers, wherein the demultiplexer (180) is adapted to demultiplex each one of the input audio data streams having one or more layers into two or more demultiplexed audio data streams having exactly one layer, such that the two or more demultiplexed audio data streams together comprise the one or more layers of the input audio data stream. Furthermore, the apparatus comprises a merging module (190) for generating the merged audio data stream, having one or more layers, based on the plurality of single-layer audio data streams. Each layer of the input data audio streams, of the demultiplexed audio data streams, of the single-layer data streams and of the merged audio data stream comprises a pressure value of a pressure signal, a position value and a diffuseness value as audio data.

摘要翻译： 提供一种用于产生合并的音频数据流的装置。 该装置包括用于获得多个单层音频数据流的解复用器（180），其中解复用器（180）适于接收一个或多个输入音频数据流，其中每个输入音频数据流包括一个或多个层， 其中解复用器（180）适于将具有一个或多个层的输入音频数据流中的每一个解复用为具有正好一个层的两个或更多个解复用的音频数据流，使得两个或更多个解复用的音频数据流一起构成一个 或更多层的输入音频数据流。 此外，该装置包括用于基于多个单层音频数据流来生成具有一个或多个层的合并音频数据流的合并模块（190）。 单层数据流和合并音频数据流的解复用音频数据流的输入数据音频流的每一层包括作为音频数据的压力信号，位置值和扩散度值的压力值。

公开(公告)号：EP2425427B1

公开(公告)日：2014-09-10

申请号：EP10716830.4

申请日：2010-04-28

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

发明人： HERRE, Jürgen ,  HOELZER, Andreas ,  TERENTIEV, Leonid ,  KASTNER, Thorsten ,  FALCH, Cornelia ,  PURNHAGEN, Heiko ,  ENGDEGARD, Jonas ,  RIDDERBUSCH, Falco

IPC分类号： G10L19/008 ,  G10L19/20

CPC分类号： G10L19/008 ,  G10L19/20

摘要： An audio signal encoder (600) for providing a downmix signal representation (614) and an object-related parametric information (616) on the basis of a plurality of object signals (x 1 to x N ) comprises a downmixer (620) configured to provide one or more downmix signals in dependence on downmix coefficients (d 1 to d N ) associated with the object signals (x 1 to x N ), such that the one or more downmix signals comprise a superposition of a plurality of object signals, and a side information provider (630) configured to provide an inter-object-relationship side information (OLD, IOC) describing level differences and correlation characteristics of object signals (x 1 to x N ) and an individual-object side information describing one or more individual properties of the individual object signals (x 1 to x N ).

公开(公告)号：EP2609590A1

公开(公告)日：2013-07-03

申请号：EP11731316.3

申请日：2011-07-06

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

发明人： KUNTZ, Achim ,  DISCH, Sascha ,  HERRE, Jürgen ,  KUECH, Fabian ,  HILPERT, Johannes

IPC分类号： G10L19/00

CPC分类号： G10L19/0017 ,  G10L19/008 ,  G10L19/025

摘要： An apparatus for encoding an audio signal having a plurality of channels is provided. The apparatus comprises a downmixer (1010) for downmixing the plurality of channels to obtain a downmix signal. Moreover, the apparatus comprises a residual signal calculator (1020) adapted for calculating a residual signal. Furthermore, the apparatus comprises a phase information calculator (1030) adapted for calculating information on a phase difference between the downmix and the residual signal to obtain phase information. Moreover, the apparatus comprises an output generator (1040) for outputting the phase information.

公开(公告)号：EP2491551A1

公开(公告)日：2012-08-29

申请号：EP10765803.1

申请日：2010-10-19

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

发明人： ENGDEGARD, Jonas ,  PURNHAGEN, Heiko ,  HERRE, Jürgen ,  TERENTIV, Leon ,  FALCH, Cornelia ,  HELLMUTH, Oliver

IPC分类号： G10L19/00

CPC分类号： H04S3/008 ,  G10L19/008 ,  H04S2420/03

摘要： An apparatus for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information, which are included in a bitstream representation of an audio content, and in dependence on a rendering information, has a distortion limiter configured to adjust upmix parameters using a distortion control scheme to avoid or limit audible distortions which are caused by an inappropriate choice of rendering parameters. The distortion limiter is configured to obtain a distortion limitation control parameter, which is included in the bitstream representation of the audio content, and to adjust a distortion control scheme in dependence on the distortion limitation control parameter.

公开(公告)号：EP2054884B1

公开(公告)日：2011-10-05

申请号：EP07819842.1

申请日：2007-11-16

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

发明人： WIK, Tilo ,  WENINGER, Dieter ,  HERRE, Jürgen

IPC分类号： G10L19/14

CPC分类号： G10L19/002

摘要： The invention relates to a device (100) for encoding a sequence of scanning values of an audio signal, wherein each scanning value within the sequence has an original position. The device (100) comprises a system (110) for sorting the scanning values according to size in order to obtain a sorted sequence of scanning values, wherein each scanning value has a sorting position within the sorted sequence. Furthermore, the device (100) comprises a system (120) for encoding the sorted scanning values and information about a relationship between the original and sorting positions of the scanning values.

公开(公告)号：EP2304720A1

公开(公告)日：2011-04-06

申请号：EP09776859.2

申请日：2009-06-26

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

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

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/035 ,  G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/028 ,  G10L19/032 ,  G10L25/18

摘要： A noise filler for providing a noise-filled spectral representation of an audio signal on the basis of an input spectral representation of the audio signal comprises a spectral region identifier configured to identify spectral regions of the input spectral representation spaced from non-zero spectral regions of the input spectral representation by at least one intermediate spectral region, to obtain identified spectral regions, and a noise inserter configured to selectively introduce noise into the identified spectral regions to obtain the noise-filled spectral representation of the audio signal. A noise filling parameter calculator for providing a noise filling parameter on the basis of a quantized spectral representation of an audio signal comprises a spectral region identifier, as mentioned above, and a noise value calculator configured to selectively consider quantization errors of the identified spectral regions for a calculation of the noise filling parameter. Accordingly, an encoded audio signal representation representing the audio signal can be obtained.

摘要翻译： 用于基于音频信号的输入频谱表示来提供音频信号的噪声填充频谱表示的噪声填充器包括频谱区域标识符，该频谱区域标识符被配置为识别输入频谱表示与下面的非零频谱区域隔开的频谱区域： 由至少一个中间频谱区域进行的输入频谱表示以获得识别的频谱区域，以及噪声插入器，其被配置为选择性地将噪声引入到所识别的频谱区域中以获得音频信号的噪声填充频谱表示。 用于基于音频信号的量化频谱表示来提供噪声填充参数的噪声填充参数计算器包括如上所述的频谱区域标识符，以及噪声值计算器，其被配置为选择性地考虑所识别的频谱区域的量化误差以用于 计算噪声填充参数。 相应地，可以获得表示音频信号的编码音频信号表示。

公开(公告)号：EP1741039B1

公开(公告)日：2010-02-17

申请号：EP05735002.7

申请日：2005-03-22

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

发明人： DISCH, Sascha ,  LINZMEIER, Karsten ,  HERRE, Jürgen

IPC分类号： G06F17/14 ,  G10L19/02 ,  H04N7/30 ,  G10L21/02

CPC分类号： G10L19/0212 ,  G10L2021/02087

公开(公告)号：EP1854218B1

公开(公告)日：2009-01-28

申请号：EP06706906.2

申请日：2006-02-13

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

发明人： SPERSCHNEIDER, Ralph ,  HERRE, Jürgen ,  LINZMEIER, Karsten ,  HILPERT, Johannes

IPC分类号： H03M7/40 ,  H03M7/30

CPC分类号： H03M7/30 ,  H03M7/3082

摘要： A compact encoded representation of information values not exceeding a predefined size can be derived when a first encoding rule generating an encoded representation of the information values of variable length is compared to a second encoding rule generating an encoded representation of the information values of fixed length and when the encoding rule resulting in the encoded representation requiring the lower number of information units is chosen. Thus, the maximum bit rate can be guaranteed to be at least the maximum bit rate of the second encoding rule deriving the second encoded representation. Signaling the choice of the encoding rule by some rule information together with the encoded representation of the information values, the correct information values can later on be derived on a decoder side, using a decoding rule fitting the encoding rule used during the encoding.

公开(公告)号：EP1803325B1

公开(公告)日：2008-11-05

申请号：EP05785586.8

申请日：2005-09-12

申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Agere Systems, Inc.

发明人： ALLAMANCHE, Eric ,  DISCH, Sascha ,  FALLER, Christof ,  HERRE, Jürgen

IPC分类号： H04S3/00 ,  G10L19/00

CPC分类号： G10L19/008 ,  H04S3/02

公开(公告)号：EP1854218A1

公开(公告)日：2007-11-14

申请号：EP06706906.2

申请日：2006-02-13

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

发明人： SPERSCHNEIDER, Ralph ,  HERRE, Jürgen ,  LINZMEIER, Karsten ,  HILPERT, Johannes

IPC分类号： H03M7/40 ,  H03M7/30

CPC分类号： H03M7/30 ,  H03M7/3082

摘要： A compact encoded representation of information values not exceeding a predefined size can be derived when a first encoding rule generating an encoded representation of the information values of variable length is compared to a second encoding rule generating an encoded representation of the information values of fixed length and when the encoding rule resulting in the encoded representation requiring the lower number of information units is chosen. Thus, the maximum bit rate can be guaranteed to be at least the maximum bit rate of the second encoding rule deriving the second encoded representation. Signaling the choice of the encoding rule by some rule information together with the encoded representation of the information values, the correct information values can later on be derived on a decoder side, using a decoding rule fitting the encoding rule used during the encoding.