公开(公告)号：US20120020499A1

公开(公告)日：2012-01-26

申请号：US13191236

申请日：2011-07-26

申请人： Matthias Neusinger ,  Julien Robilliard ,  Johannes Hilpert

发明人： Matthias Neusinger ,  Julien Robilliard ,  Johannes Hilpert

IPC分类号： H04B1/00

CPC分类号： G10L19/008

摘要： An upmixer for upmixing a downmix audio signal into an upmixed audio signal describing one or more upmixed audio channels includes a parameter applier configured to apply upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The parameter applier is configured to apply a phase shift to the downmix audio signal to obtain a phase-shifted version of the downmix audio signal, while leaving a decorrelated signal unmodified by the phase shift. The parameter applier is further configured to combine the phase-shifted version of the downmix audio signal with the decorrelated signal to obtain the upmixed audio signal.

摘要翻译： 用于将下混合音频信号上混合到描述一个或多个上混音频通道的上混合音频信号的上混混器包括配置用于施加上混参数以混合下混音频信号以便获得上混音频信号的参数施加器。 参数施加器被配置为将相移应用于下混音频信号以获得下混音频信号的相移版本，同时保留未被相移修改的解相关信号。 参数施加器还被配置为将降混音频信号的相移版本与解相关信号组合以获得上混音频信号。

公开(公告)号：US20110317842A1

公开(公告)日：2011-12-29

申请号：US13189621

申请日：2011-07-25

申请人： Matthias NEUSINGER ,  Julien ROBILLIARD ,  Johannes HILPERT

发明人： Matthias NEUSINGER ,  Julien ROBILLIARD ,  Johannes HILPERT

IPC分类号： H04R5/00

CPC分类号： G10L19/008

摘要： An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer configured to apply temporally variable upmixing parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal. The apparatus also includes a parameter interpolator, wherein the parameter interpolator is configured to obtain one or more temporally interpolated upmix parameters to be used by the upmixer on the basis of a first complex-valued upmix parameter and a subsequent second complex-valued upmix parameter. The parameter interpolator is configured to separately interpolate between a magnitude value of the first complex-valued upmix parameter and a magnitude value of the second complex-valued upmix parameter, and between a phase value of the first complex-valued upmix parameter and a phase value of the second complex-valued upmix parameter, to obtain the one or more temporally interpolated upmix parameters. A respective method can be implemented, for example, as a computer program.

摘要翻译： 用于将描述一个或多个下混音频通道的缩混音频信号上混合到描述多个上混合音频通道的上混合音频信号中的装置包括：上混频器，其被配置为应用时间上可变的上混参数来混合下混音频信号，以获得上混合音频 信号。 该装置还包括参数内插器，其中参数内插器被配置为基于第一复值上混参数和随后的第二复值上混参数来获得上混合器使用的一个或多个时间插值上混参数。 参数内插器被配置为在第一复值上混参数的幅度值和第二复值上混参数的幅值之间以及在第一复值上混参数的相位值和相位值之间分别插值 的第二复值上混参数，以获得一个或多个时间内插的上混参数。 相应的方法可以例如作为计算机程序来实现。

公开(公告)号：US07983922B2

公开(公告)日：2011-07-19

申请号：US11212395

申请日：2005-08-25

申请人： Matthias Neusinger ,  Jürgen Herre ,  Sascha Disch ,  Heiko Purnhagen ,  Kristofer Kjörling ,  Jonas Engdegard ,  Jeroen Breebaart ,  Erik Schuijers ,  Werner Oomen

发明人： Matthias Neusinger ,  Jürgen Herre ,  Sascha Disch ,  Heiko Purnhagen ,  Kristofer Kjörling ,  Jonas Engdegard ,  Jeroen Breebaart ,  Erik Schuijers ,  Werner Oomen

IPC分类号： G10L19/00 ,  H04R5/00

CPC分类号： G10L19/26 ,  G10L19/008 ,  G10L2019/0012 ,  H04S3/008

摘要： On an encoder-side, a multi-channel input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel synthesis for smoothing quantized transmitted parameters or values derived from the quantized transmitted parameters for providing an improved subjective audio quality in particular for slowly moving point sources and rapidly moving point sources having tonal material such as fast moving sinusoids.

摘要翻译： 在编码器侧，分析多通道输入信号以获得平滑控制信息，该平滑控制信息将被解码器侧多信道合成用于平滑经量化的传输参数或从量化的传输参数导出的值，以提供 改善主观音频质量，特别是对于缓慢移动的点源和具有诸如快速移动的正弦波的音调材料的快速移动的点源。

公开(公告)号：US20070081597A1

公开(公告)日：2007-04-12

申请号：US11363985

申请日：2006-02-27

申请人： Sascha Disch ,  Juergen Herre ,  Matthias Neusinger ,  Dirk Jeroen Breebaart ,  Gerard Hotho

发明人： Sascha Disch ,  Juergen Herre ,  Matthias Neusinger ,  Dirk Jeroen Breebaart ,  Gerard Hotho

IPC分类号： H04B14/04

CPC分类号： G10L19/008 ,  H04S3/008

摘要： A selected channel of a multi-channel signal which is represented by frames composed from sampling values having a high time resolution can be encoded with higher quality when a wave form parameter representation representing a wave form of an intermediate resolution representation of the selected channel is derived, the wave form parameter representation including a sequence of intermediate wave form parameters having a time resolution lower than the high time resolution of the sampling values and higher than a time resolution defined by a frame repetition rate. The wave form parameter representation with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to that one of the selected original channel. The time scale on which the shaping is performed is shorter than the time scale of a framewise processing, thus enhancing the quality of the reconstructed channel. On the other hand, the shaping time scale is larger than the time scale of the sampling values, significantly reducing the amount of data needed by the wave form parameter representation.

摘要翻译： 当表示所选频道的中间分辨率表示的波形的波形参数表示被导出时，由具有高时间分辨率的采样值组成的帧表示的多信道信号的选择信道可以被更高质量地编码 波形参数表示，包括具有低于采样值的高时间分辨率的时间分辨率并且高于由帧重复率定义的时间分辨率的中间波形参数序列。 具有中间分辨率的波形参数表示可用于对重建的信道进行整形以检索具有接近所选择的原始信道中的那一个的信号包络的信道。 进行整形的时间标度比框架处理的时间标度短，从而提高重构信道的质量。 另一方面，成形时间尺度大于采样值的时间尺度，显着减少波形参数表示所需的数据量。

公开(公告)号：US20060167683A1

公开(公告)日：2006-07-27

申请号：US11317521

申请日：2005-12-22

申请人： Holger Hoerich ,  Michael Schug ,  Matthias Neusinger

发明人： Holger Hoerich ,  Michael Schug ,  Matthias Neusinger

IPC分类号： G10L19/00

CPC分类号： G10L19/022 ,  G10L19/0212 ,  G10L19/24

摘要： When encoding an audio signal, the audio signal is first encoded with the first encoder to obtain a first encoder output signal. This first encoder output signal is written into a bit stream. It is further decoded by a decoder to provide a decoded audio signal. The decoded audio signal is compared with the original audio signal to obtain a residual signal. The residual signal is then encoded via a second encoder to provide a second encoder output signal which is also written into a bit stream. The first encoder has a first time or frequency resolution. The second encoder has a second time or frequency resolution. The first resolution differs from the second resolution, so that in a respective decoder, an audio signal with both a high time resolution as well as a high frequency resolution can be retrieved.

摘要翻译： 当对音频信号进行编码时，首先用第一编码器对音频信号进行编码以获得第一编码器输出信号。 该第一编码器输出信号被写入位流。 由解码器进一步解码以提供解码的音频信号。 将解码的音频信号与原始音频信号进行比较以获得残留信号。 然后通过第二编码器对残差信号进行编码，以提供也被写入比特流的第二编码器输出信号。 第一个编码器具有第一次或频率分辨率。 第二编码器具有第二时间或频率分辨率。 第一分辨率与第二分辨率不同，因此在相应的解码器中，可以检索具有高时间分辨率以及高频分辨率的音频信号。

公开(公告)号：US08676364B2

公开(公告)日：2014-03-18

申请号：US12867293

申请日：2009-02-10

申请人： Sebastian Scharrer ,  Wolfgang Fiesel ,  Joerg Pickel ,  Matthias Neusinger

发明人： Sebastian Scharrer ,  Wolfgang Fiesel ,  Joerg Pickel ,  Matthias Neusinger

IPC分类号： G06F17/00 ,  H03M9/00 ,  H04K1/02 ,  H04N5/917

CPC分类号： G10L19/008 ,  H03M3/388 ,  H04H60/37 ,  H04N21/2335 ,  H04S3/008

摘要： For synchronizing multichannel extension data with an audio signal, wherein the audio signal includes block division information and the multichannel extension data include reference audio signal fingerprint information, the block division information in the audio signal is detected by means of a block detector. Thereupon, block division of the audio signal is performed by a fingerprint calculator according to the block division information in order to obtain a sequence of test audio signal fingerprints. In addition to that, a sequence of reference audio signal fingerprints is extracted from the reference audio signal fingerprint information of the multichannel extension data. Both sequences of fingerprints are correlated in order to obtain a correlation result, by which a compensator is controlled in order to reduce or eliminate a time offset between the multichannel extension data and the audio signal.

摘要翻译： 为了使多声道扩展数据与音频信号同步，其中音频信号包括块分割信息，并且多声道扩展数据包括参考音频信号指纹信息，通过块检测器检测音频信号中的块分割信息。 因此，通过指纹计算器根据块分割信息执行音频信号的块分割，以便获得测试音频信号指纹的序列。 除此之外，从多声道扩展数据的参考音频信号指纹信息中提取参考音频信号指纹序列。 两个指纹序列相关，以获得相关结果，通过该相关结果来控制补偿器，以便减少或消除多声道扩展数据与音频信号之间的时间偏移。

公开(公告)号：US20120308049A1

公开(公告)日：2012-12-06

申请号：US13585875

申请日：2012-08-15

申请人： Stephan SCHREINER ,  Wolfgang FIESEL ,  Matthias NEUSINGER ,  Oliver HELLMUTH ,  Ralph SPERSCHNEIDER

发明人： Stephan SCHREINER ,  Wolfgang FIESEL ,  Matthias NEUSINGER ,  Oliver HELLMUTH ,  Ralph SPERSCHNEIDER

IPC分类号： H04B1/00

CPC分类号： H04S3/008

摘要： An apparatus for generating at least one audio output signal representing a superposition of at least two different audio objects comprises a processor for processing an audio input signal to provide an object representation of the audio input signal, where this object representation can be generated by a parametrically guided approximation of original objects using an object downmix signal. An object manipulator individually manipulates objects using audio object based metadata referring to the individual audio objects to obtain manipulated audio objects. The manipulated audio objects are mixed using an object mixer for finally obtaining an audio output signal having one or several channel signals depending on a specific rendering setup.

摘要翻译： 用于产生表示至少两个不同音频对象的叠加的至少一个音频输出信号的装置包括处理器，用于处理音频输入信号以提供音频输入信号的对象表示，其中该对象表示可以通过参数生成 使用对象缩混信号对原始对象进行引导近似。 对象操纵器使用基于音频对象的元数据单独地操纵对象，该元数据参考各个音频对象以获得被操纵的音频对象。 使用对象混合器混合操纵的音频对象，以根据特定的渲染设置最终获得具有一个或多个通道信号的音频输出信号。

公开(公告)号：US20110255714A1

公开(公告)日：2011-10-20

申请号：US13151412

申请日：2011-06-02

申请人： Matthias NEUSINGER ,  Julien ROBILLIARD ,  Johannes HILPERT

发明人： Matthias NEUSINGER ,  Julien ROBILLIARD ,  Johannes HILPERT

IPC分类号： H04B1/00

CPC分类号： G10L19/008 ,  H04S2420/03

摘要： An apparatus for upmixing a downmix audio signal describing one or more downmix audio channels into an upmixed audio signal describing a plurality of upmixed audio channels includes an upmixer and a parameter determinator. The upmixer is configured to apply temporally variable upmix parameters to upmix the downmix audio signal in order to obtain the upmixed audio signal, wherein the temporally variable upmix parameters include temporally variable smoothened phase values. The parameter determinator is configured to obtain one or more temporally smoothened upmix parameters for usage by the upmixer on the basis of a quantized upmix parameter input information. The parameter determinator is configured to combine a scaled version of a previous smoothened phase value with a scaled version of an input phase information using a phase change limitation algorithm, to determine a current smoothened phase value on the basis of the previous smoothened phase value and the phase input information.

摘要翻译： 用于将描述一个或多个下混音频通道的下混音频信号上混合到描述多个上混音频通道的上混音频信号中的装置包括上混音器和参数确定器。 上混频器被配置为应用时间上可变的上混参数来上混合音频信号，以便获得上混合音频信号，其中时间上可变上混参数包括时间上可变的平滑相位值。 参数确定器被配置为获得一个或多个时间上平滑的上混参数，以供上混合器基于量化上混参数输入信息使用。 参数确定器被配置为使用相变限制算法将先前平滑相位值的缩放版本与输入相位信息的缩放版本组合，以基于先前平滑相位值确定当前平滑相位值，并且 相输入信息。

公开(公告)号：US20110112669A1

公开(公告)日：2011-05-12

申请号：US12867460

申请日：2009-02-10

申请人： Sebastian Scharrer ,  Wolfgang Fiesel ,  Matthias Neusinger

发明人： Sebastian Scharrer ,  Wolfgang Fiesel ,  Matthias Neusinger

IPC分类号： G06F17/00

CPC分类号： G10L25/48 ,  G10L19/008

摘要： For calculating a fingerprint of an audio signal, the audio signal is divided (104a) into subsequent blocks of samples. For the subsequent blocks, one fingerprint value each is calculated (104b), wherein fingerprint samples of subsequent blocks are compared (806). Based on whether the fingerprint value of a block is higher than the fingerprint value of a subsequent block or not, a binary value is assigned, wherein information about a sequence of binary values is output (104c) as fingerprint for the audio signal.

摘要翻译： 为了计算音频信号的指纹，将音频信号（104a）分割成随后的采样块。 对于随后的块，计算每个指纹值（104b），其中比较后续块的指纹样本（806）。 基于块的指纹值是否高于后续块的指纹值，分配二进制值，其中输出作为音频信号的指纹的二进制值序列的信息（104c）。

公开(公告)号：US20080013614A1

公开(公告)日：2008-01-17

申请号：US11863523

申请日：2007-09-28

申请人： Wolfgang FIESEL ,  Matthias NEUSINGER ,  Harald POPP ,  Stephan GEYERSBERGER

发明人： Wolfgang FIESEL ,  Matthias NEUSINGER ,  Harald POPP ,  Stephan GEYERSBERGER

IPC分类号： H04B17/00 ,  H04B3/46 ,  H04Q1/20

CPC分类号： G10L19/008

摘要： For time synchronization of a data stream with multi-channel additional data and a data stream with data on at least one base channel, a fingerprint information calculation is performed on the encoder side for the at least one base channel to insert the fingerprint information into a data stream in time connection to the multi-channel additional data. On the decoder side, fingerprint information are calculated from the at least one base channel and used together with the fingerprint information extracted from the data stream to calculate and compensate a time offset between the data stream with the multi-channel additional information and the data stream with the at least one base channel, for example by means of a correlation, to obtain a synchronized multi-channel representation.

摘要翻译： 对于具有多信道附加数据的数据流的时间同步和具有至少一个基本信道上的数据的数据流，在编码器侧对于至少一个基本信道执行指纹信息计算，以将指纹信息插入到 数据流及时连接到多通道附加数据。 在解码器侧，从至少一个基本信道计算指纹信息并与从数据流提取的指纹信息一起使用，以计算和补偿数据流与多信道附加信息和数据流之间的时间偏移 与至少一个基本信道，例如通过相关，以获得同步的多信道表示。