公开(公告)号：US08290167B2

公开(公告)日：2012-10-16

申请号：US11742502

申请日：2007-04-30

申请人： Ville Pulkki ,  Juergen Herre

发明人： Ville Pulkki ,  Juergen Herre

IPC分类号： H04R5/00

CPC分类号： H04S3/02 ,  G10L19/008 ,  G10L19/173 ,  H04S2420/11

摘要： An input multi-channel representation is converted into a different output multi-channel representation of a spatial audio signal, in that an intermediate representation of the spatial audio signal is derived, the intermediate representation having direction parameters indicating a direction of origin of a portion of the spatial audio signal; and in that the output multi-channel representation of the spatial audio signal is generated using the intermediate representation of the spatial audio signal.

摘要翻译： 输入多声道表示被转换成空间音频信号的不同输出多声道表示，因为导出空间音频信号的中间表示，中间表示具有指示一部分的原点方向的方向参数 空间音频信号; 并且使用空间音频信号的中间表示来生成空间音频信号的输出多声道表示。

公开(公告)号：US08116459B2

公开(公告)日：2012-02-14

申请号：US11384000

申请日：2006-05-18

申请人： Sascha Disch ,  Karsten Linzmeier ,  Juergen Herre ,  Harald Popp

发明人： Sascha Disch ,  Karsten Linzmeier ,  Juergen Herre ,  Harald Popp

IPC分类号： H04R5/00

CPC分类号： H04S3/002 ,  G10L19/008 ,  G10L19/26 ,  H04R2217/03 ,  H04S3/02 ,  H04S2420/03

摘要： The present invention is based on the finding that a reconstructed output channel, reconstructed with a multi-channel reconstructor using at least one downmix channel derived by downmixing a plurality of original channels and using a parameter representation including additional information on a temporal fine structure of an original channel can be reconstructed efficiently with high quality, when a generator for generating a direct signal component and a diffuse signal component based on the downmix channel is used. The quality can be essentially enhanced, if only the direct signal component is modified such that the temporal fine structure of the reconstructed output channel is fitting a desired temporal fine structure, indicated by the additional information on the temporal fine structure transmitted.

摘要翻译： 本发明基于以下发现：重建的输出通道，其使用通过将多个原始通道进行下混合而导出的至少一个下混频道重建的多通道重构器，并且使用参数表示，该参数表示包括关于时间精细结构的附加信息 当使用用于产生基于下混通道的直接信号分量和扩散信号分量的发生器时，可以高质量地重构原始信道。 如果仅修改直接信号分量，使得重建的输出信道的时间精细结构适合于由发送的时间精细结构的附加信息所指示的期望的时间精细结构，则质量可以基本上增强。

公开(公告)号：US20110202337A1

公开(公告)日：2011-08-18

申请号：US13004534

申请日：2011-01-11

申请人： Guillaume Fuchs ,  Stefan Bayer ,  Jens Hirschfeld ,  Juergen Herre ,  Jeremie Lecomte ,  Frederik Nagel ,  Nikolaus Rettelbach ,  Stefan Wabnik ,  Yoshikazu Yokotani

发明人： Guillaume Fuchs ,  Stefan Bayer ,  Jens Hirschfeld ,  Juergen Herre ,  Jeremie Lecomte ,  Frederik Nagel ,  Nikolaus Rettelbach ,  Stefan Wabnik ,  Yoshikazu Yokotani

IPC分类号： G10L15/00

CPC分类号： G10L19/20 ,  G10L19/22 ,  G10L25/00 ,  G10L25/51 ,  G10L2025/783

摘要： For classifying different segments of a signal which has segments of at least a first type and second type, e.g. audio and speech segments, the signal is short-term classified on the basis of the at least one short-term feature extracted from the signal and a short-term classification result is delivered. The signal is also long-term classified on the basis of the at least one short-term feature and at least one long-term feature extracted from the signal and a long-term classification result is delivered. The short-term classification result and the long-term classification result are combined to provide an output signal indicating whether a segment of the signal is of the first type or of the second type.

摘要翻译： 用于分类具有至少第一类型和第二类型的段的信号的不同段，例如， 音频和语音段，信号是根据从信号中提取的至少一个短期特征进行短期分类的，并且传送短期分类结果。 信号也是基于至少一个短期特征和从该信号提取的至少一个长期特征和长期分类结果进行长期分类的。 组合短期分类结果和长期分类结果以提供指示信号的片段是第一类型还是第二类型的输出信号。

公开(公告)号：US07974713B2

公开(公告)日：2011-07-05

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： G06F17/00 ,  H03M7/00 ,  H04R5/00 ,  G10L19/00

CPC分类号： G10L19/008 ,  H04S3/008

摘要： A selected channel of a multi-channel signal represented by frames composed from sampling values having a high time resolution is provided that 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 with the intermediate resolution can be used to shape a reconstructed channel to retrieve a channel having a signal envelope close to a 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： 提供了由具有高时间分辨率的采样值组成的帧表示的多通道信号的选定通道，当表示所选通道的中间分辨率表示的波形的波形参数表示为 派生。 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原始信道的信号包络的信道。 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：US20080004869A1

公开(公告)日：2008-01-03

申请号：US11428297

申请日：2006-06-30

申请人： Juergen Herre ,  Bernhard Grill ,  Markus Multrus ,  Stefan Bayer ,  Ulrich Kraemer ,  Jens Hirschfeld ,  Stefan Wabnik ,  Gerald Schuller

发明人： Juergen Herre ,  Bernhard Grill ,  Markus Multrus ,  Stefan Bayer ,  Ulrich Kraemer ,  Jens Hirschfeld ,  Stefan Wabnik ,  Gerald Schuller

IPC分类号： G10L19/14

CPC分类号： G10L19/22

摘要： An audio encoder, an audio decoder or an audio processor includes a filter for generating a filtered audio signal, the filter having a variable warping characteristic, the characteristic being controllable in response to a time-varying control signal, the control signal indicating a small or no warping characteristic or a comparatively high warping characteristic. Furthermore, a controller is connected for providing the time-varying control signal, which depends on the audio signal. The filtered audio signal can be introduced to an encoding processor having different encoding algorithms, one of which is a coding algorithm adapted to a specific signal pattern. Alternatively, the filter is a post-filter receiving a decoded audio signal.

摘要翻译： 音频编码器，音频解码器或音频处理器包括用于产生经滤波的音频信号的滤波器，该滤波器具有可变的翘曲特性，该特性可响应于时变控制信号而被控制，该控制信号指示小的或 无翘曲特性或较高翘曲特性。 此外，连接控制器以提供取决于音频信号的时变控制信号。 滤波后的音频信号可以被引入到具有不同编码算法的编码处理器中，其中之一是适用于特定信号模式的编码算法。 或者，滤波器是接收经解码的音频信号的后置滤波器。

公开(公告)号：US07260225B2

公开(公告)日：2007-08-21

申请号：US10149248

申请日：2000-12-07

申请人： Bodo Teichmann ,  Oliver Kunz ,  Juergen Herre ,  Klaus Peichl ,  Michael Beer

发明人： Bodo Teichmann ,  Oliver Kunz ,  Juergen Herre ,  Klaus Peichl ,  Michael Beer

IPC分类号： H04H5/00

CPC分类号： H04S1/00 ,  G10L19/008

摘要： In a device for processing a stereo audio signal having a first channel and a second channel the stereo signal is at first analyzed to obtain a measure for a quantity of bits required by a coder to code the stereo audio signal using a coding algorithm. The first channel and the second channel are then modified when the measure for the quantity of bits is larger than a predetermined value, the modification being performed in such a way that the energy of a sum signal of the first and the second modified channel is in a predetermined relation to the energy of a sum signal of the first and the second channel and that a difference signal of the first and the second modified channel is attenuated in contrast to the difference signal of the first and the second channel. Especially for audio coders requiring a constant output bit rate the side channel is attenuated in the case of stereo audio signals, the coding of which cannot meet the output bit rate of the coder, by which a stereo channel separation is abandoned for the benefit of an increased audio bandwidth or a reduction of quantizing disturbances, respectively.

摘要翻译： 在用于处理具有第一通道和第二通道的立体声音频信号的设备中，首先分析立体声信号以获得编码器使用编码算法编码立体声音频信号所需的位数量度。 然后当比特量的测量大于预定值时修改第一信道和第二信道，修改是以第一和第二修改信道的和信号的能量处于 与第一和第二信道的和信号的能量的预定关系，并且与第一和第二信道的差分信号相比，第一和第二修改信道的差分信号被衰减。 特别是对于需要恒定输出比特率的音频编码器，在立体声音频信号的情况下，侧信道被衰减，其编码不能满足编码器的输出比特率，通过该编码器，放弃了立体声信道分离以有利于 分别增加音频带宽或减少量化干扰。

公开(公告)号：US20070033056A1

公开(公告)日：2007-02-08

申请号：US11464315

申请日：2006-08-14

申请人： Juergen Herre ,  Michael Schug ,  Alexander Groeschl

发明人： Juergen Herre ,  Michael Schug ,  Alexander Groeschl

IPC分类号： G10L21/00 ,  G10L21/04

CPC分类号： G10L19/03 ,  G10L19/008

摘要： An apparatus for processing a multi-channel signal includes a means for determining a similarity between a first one of two channels and a second one of the two channels. Furthermore, a means for performing a prediction filtering of the spectral coefficients is provided, which is formed to perform a prediction filtering with only a single prediction filter for both channels in case of high similarity between the first and the second channel, and to perform a prediction filtering with two separate prediction filters in case of a dissimilarity between the first and the second channel. With this, an introduction of stereo artifacts and a deterioration of the coding gain in stereo coding techniques are avoided.

摘要翻译： 用于处理多信道信号的装置包括用于确定两个信道中的第一个信道和两个信道中的第二信道之间的相似性的装置。 此外，提供了一种用于执行频谱系数的预测滤波的装置，其被形成为在第一和第二信道之间具有高相似性的情况下仅对两个信道执行预测滤波，并且执行 在第一和第二信道之间具有不相似性的情况下，使用两个单独的预测滤波器进行预测滤波。 由此，避免立体声伪影的引入和立体声编码技术中的编码增益的恶化。

公开(公告)号：US07081581B2

公开(公告)日：2006-07-25

申请号：US10469468

申请日：2002-02-26

申请人： Eric Allamanche ,  Juergen Herre ,  Oliver Hellmuth ,  Bernhard Froeba

发明人： Eric Allamanche ,  Juergen Herre ,  Oliver Hellmuth ,  Bernhard Froeba

IPC分类号： G10H7/00

CPC分类号： G10H1/0033 ,  G10H1/0008 ,  G10H2210/081 ,  G10H2240/061 ,  G10H2240/135 ,  G10H2250/235 ,  G10H2250/601 ,  G10L19/0204

摘要： In a method for characterizing a signal, which represents an audio content, a measure for a tonality of the signal is determined, whereupon a statement is made about the audio content of the signal based on the measure for the tonality of the signal. The measure for the tonality of the signal for the content analysis is robust against a signal distortion, such as by MP3 encoding, and has a high correlation to the content of the examined signal.

摘要翻译： 在表示音频内容的信号的表征的方法中，确定用于信号的音调的度量，由此基于信号的音调的度量来声明信号的音频内容。 用于内容分析的信号的音调的度量对于诸如通过MP3编码的信号失真是鲁棒的，并且与所检查的信号的内容具有高相关性。

公开(公告)号：US20050234366A1

公开(公告)日：2005-10-20

申请号：US10804992

申请日：2004-03-19

申请人： Thorsten Heinz ,  Andreas Brueckmann ,  Juergen Herre

发明人： Thorsten Heinz ,  Andreas Brueckmann ,  Juergen Herre

IPC分类号： G10H1/00 ,  G10L11/00 ,  H04R29/00

CPC分类号： G10H1/00 ,  G10H2210/066 ,  G10H2210/071 ,  G10H2240/141 ,  G10L25/48

摘要： An apparatus for analyzing a sound signal is based on an ear model for deriving, for a number of inner hair cells, an estimate for a time-varying concentration of transmitter substance inside a cleft between an inner hair cell and an associated auditory nerve from the sound signal so that an estimated inner hair cell cleft contents map over time is obtained. This map is analyzed by means of a pitch analyzer to obtain a pitch line over time, the pitch line indicating a pitch of the sound signal for respective time instants. A rhythm analyzer is operative for analyzing envelopes of estimates for selected inner hair cells, the inner hair cells being selected in accordance with the pitch line, so that segmentation instants are obtained, wherein a segmentation instant indicates an end of the preceding note or a start of a succeeding note. Thus, a human-related and reliable sound signal analysis can be obtained.

摘要翻译： 一种用于分析声音信号的装置是基于耳朵模型，用于针对多个内部毛细胞，从内部毛发细胞和相关联的听觉神经之间的间隙内的发射器物质的时变浓度估计值 声信号，从而获得估计的内毛细胞裂缝内容图随时间的变化。 通过音调分析器分析该图，以随时间获得音调线，该音调线表示各个时刻的声音信号的间距。 一个节奏分析器用于分析所选择的内毛细胞的估计信封，根据节距线选择内毛细胞，从而获得分割时刻，其中分割时刻指示前一个音符的结束或开始 的后续笔记。 因此，可以获得与人有关的可靠的声音信号分析。

公开(公告)号：US09093063B2

公开(公告)日：2015-07-28

申请号：US13546048

申请日：2012-07-11

申请人： Juha Vilkamo ,  Jan Plogsties ,  Bernhard Neugebauer ,  Juergen Herre

发明人： Juha Vilkamo ,  Jan Plogsties ,  Bernhard Neugebauer ,  Juergen Herre

IPC分类号： H04R5/00 ,  G10L19/008

CPC分类号： G10L19/008

摘要： An apparatus for extracting a direct and/or ambience signal from a downmix signal and spatial parametric information, the downmix signal and the spatial parametric information representing a multi-channel audio signal having more channels than the downmix signal, wherein the spatial parametric information has inter-channel relations of the multi-channel audio signal, is described. The apparatus has a direct/ambience estimator and a direct/ambience extractor. The direct/ambience estimator is configured for estimating a level information of a direct portion and/or an ambient portion of the multi-channel audio signal based on the spatial parametric information. The direct/ambience extractor is configured for extracting a direct signal portion and/or an ambient signal portion from the downmix signal based on the estimated level information of the direct portion or the ambient portion.

摘要翻译： 一种用于从缩混信号和空间参数信息中提取直接和/或环境信号的装置，所述下混信号和所述空间参数信息表示具有比所述下混信号更多的信道的多声道音频信号，其中所述空间参数信息具有 - 多通道音频信号的通道关系。 该设备具有直接/环境估计器和直接/环境提取器。 直接/环境估计器被配置为基于空间参数信息来估计多声道音频信号的直接部分和/或环境部分的电平信息。 直接/环境提取器被配置为基于直接部分或环境部分的估计电平信息从降混信号中提取直接信号部分和/或环境信号部分。