公开(公告)号：US09460724B2

公开(公告)日：2016-10-04

申请号：US13434450

申请日：2012-03-29

申请人： Juergen Herre ,  Johannes Hilpert ,  Andreas Hoelzer ,  Jonas Engdegard ,  Heiko Purnhagen

发明人： Juergen Herre ,  Johannes Hilpert ,  Andreas Hoelzer ,  Jonas Engdegard ,  Heiko Purnhagen

IPC分类号： H04R5/00 ,  G10L19/008 ,  G10L19/005 ,  G10L19/20 ,  H04S3/02 ,  H04S5/00

CPC分类号： G10L19/008 ,  G10L19/005 ,  G10L19/20 ,  H04S3/02 ,  H04S5/005 ,  H04S2420/03

摘要： An audio signal decoder for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information and in dependence on a rendering information has an object parameter determinator. The object parameter determinator is configured to obtain inter-object-correlation values for a plurality of pairs of audio objects. The object parameter determinator is configured to evaluate a bitstream signaling parameter in order to decide whether to evaluate individual inter-object-correlation bitstream parameter values to obtain inter-object-correlation values for a plurality of pairs of related audio objects, or to obtain inter-object-correlation values for a plurality of pairs of related audio objects using a common inter-object-correlation bitstream parameter value. The audio signal decoder also has a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and using the inter-object-correlation values for a plurality of pairs of related objects and the rendering information.

摘要翻译： 用于根据降混信号表示和对象相关参数信息提供上混合信号表示的音频信号解码器，并且根据呈现信息，具有对象参数确定器。 对象参数确定器被配置为获得多对音频对象的对象间相关值。 对象参数确定器被配置为评估比特流信令参数，以便决定是否评估各个对象间相关比特流参数值以获得多对相关音频对象的对象间相关值， - 使用公共对象间相关比特流参数值的多对相关音频对象的对象相关值。 音频信号解码器还具有信号处理器，其被配置为基于下混信号表示获得上混信号表示，并且使用多对相关对象和呈现信息的对象间相关值。

公开(公告)号：US09326085B2

公开(公告)日：2016-04-26

申请号：US13442649

申请日：2012-04-09

申请人： Juergen Herre ,  Stefan Geyersberger ,  Oliver Hellmuth ,  Andreas Walther ,  Christiaan Janssen

发明人： Juergen Herre ,  Stefan Geyersberger ,  Oliver Hellmuth ,  Andreas Walther ,  Christiaan Janssen

IPC分类号： H04S5/00 ,  G10L19/008 ,  H04R5/04

CPC分类号： H04S5/005 ,  G10L19/008 ,  H04R5/04

摘要： A transient detector is provided for generating an ambience signal suitable for being emitted via loudspeakers for which there is no special loudspeaker signal to detect a transient period. A synthesis signal generator produces a synthesis signal which fulfills the transient condition on the one hand and the continuity condition for the synthesis signal on the other hand. A signal substituter will then substitute a portion of the examination signal by the synthesis signal to obtain an ambience signal for the surround channels.

公开(公告)号：US09060236B2

公开(公告)日：2015-06-16

申请号：US13450027

申请日：2012-04-18

申请人： Jonas Engdegard ,  Heiko Purnhagen ,  Juergen Herre ,  Leon Terentiv ,  Cornelia Falch ,  Oliver Hellmuth

发明人： Jonas Engdegard ,  Heiko Purnhagen ,  Juergen Herre ,  Leon Terentiv ,  Cornelia Falch ,  Oliver Hellmuth

IPC分类号： H04R5/00 ,  G10L19/00 ,  G10L21/00 ,  H04S3/00 ,  G10L19/008

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.

摘要翻译： 基于下混合信号表示和包含在音频内容的比特流表示中并且依赖于呈现信息的对象相关参数信息来提供上混合信号表示的装置具有失真限制器，其被配置为 使用失真控制方案调整上混参数，以避免或限制由不适当选择渲染参数引起的可听失真。 失真限制器被配置为获得包括在音频内容的比特流表示中的失真限制控制参数，并且根据失真限制控制参数来调整失真控制方案。

公开(公告)号：US08744863B2

公开(公告)日：2014-06-03

申请号：US13441469

申请日：2012-04-06

申请人： Max Neuendorf ,  Guillaume Fuchs ,  Nikolaus Rettelbach ,  Tom Baeckstroem ,  Jeremie Lecomte ,  Juergen Herre

发明人： Max Neuendorf ,  Guillaume Fuchs ,  Nikolaus Rettelbach ,  Tom Baeckstroem ,  Jeremie Lecomte ,  Juergen Herre

IPC分类号： G10L19/00

CPC分类号： G10L19/20 ,  G10L19/022

摘要： A multi-mode audio signal decoder has a spectral value determinator to obtain sets of decoded spectral coefficients for a plurality of portions of an audio content and a spectrum processor configured to apply a spectral shaping to a set of spectral coefficients in dependence on a set of linear-prediction-domain parameters for a portion of the audio content encoded in a linear-prediction mode, and in dependence on a set of scale factor parameters for a portion of the audio content encoded in a frequency-domain mode. The audio signal decoder has a frequency-domain-to-time-domain converter configured to obtain a time-domain audio representation on the basis of a spectrally-shaped set of decoded spectral coefficients for a portion of the audio content encoded in the linear-prediction mode and for a portion of the audio content encoded in the frequency domain mode. An audio signal encoder is also described.

摘要翻译： 多模式音频信号解码器具有频谱值确定器，以获得用于音频内容的多个部分的解码频谱系数集合;以及频谱处理器，被配置为将频谱整形应用于一组频谱系数 用于以线性预测模式编码的音频内容的一部分的线性预测域参数，并且依赖于以频域模式编码的音频内容的一部分的一组比例因子参数。 音频信号解码器具有频域 - 时域转换器，其被配置为基于频谱形式的解码频谱系数集来获得时域音频表示，所述解码频谱系数被编码在线性 - 预测模式和频域模式中编码的音频内容的一部分。 还描述了音频信号编码器。

公开(公告)号：US08731209B2

公开(公告)日：2014-05-20

申请号：US12681809

申请日：2008-10-01

申请人： Christian Uhle ,  Oliver Hellmuth ,  Juergen Herre ,  Harald Popp ,  Thorsten Kastner

发明人： Christian Uhle ,  Oliver Hellmuth ,  Juergen Herre ,  Harald Popp ,  Thorsten Kastner

IPC分类号： H04B3/00

CPC分类号： H04S5/005 ,  G10L19/008 ,  G10L21/0364 ,  G10L25/78

摘要： In order to generate a multi-channel signal having a number of output channels greater than a number of input channels, a mixer is used for upmixing the input signal to form at least a direct channel signal and at least an ambience channel signal. A speech detector is provided for detecting a section of the input signal, the direct channel signal or the ambience channel signal in which speech portions occur. Based on this detection, a signal modifier modifies the input signal or the ambience channel signal in order to attenuate speech portions in the ambience channel signal, whereas such speech portions in the direct channel signal are attenuated to a lesser extent or not at all. A loudspeaker signal outputter then maps the direct channel signals and the ambience channel signals to loudspeaker signals which are associated to a defined reproduction scheme, such as, for example, a 5.1 scheme.

摘要翻译： 为了产生具有大于多个输入通道的输出通道数量的多通道信号，混频器用于将输入信号上混合以形成至少直接信道信号和至少一个环境信道信号。 提供语音检测器，用于检测语音部分发生的输入信号，直接信道信号或环境信道信号的一部分。 基于该检测，信号修改器修改输入信号或环境信道信号，以便衰减环境信道信号中的语音部分，而直接信道信号中的这种语音部分被衰减到较小程度，或根本不被衰减。 然后，扬声器信号输出器将直接信道信号和环境信道信号映射到与所定义的再现方案（例如5.1方案）相关联的扬声器信号。

公开(公告)号：US20140126725A1

公开(公告)日：2014-05-08

申请号：US14151152

申请日：2014-01-09

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： G10L19/008

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：US08532999B2

公开(公告)日：2013-09-10

申请号：US13158863

申请日：2011-06-13

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

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

IPC分类号： G10L19/14 ,  G10L21/02 ,  G06F15/00 ,  G10L11/00 ,  G10L11/02

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

摘要： An apparatus and a method for generating a multi-channel synthesizer control signal, a multi-channel synthesizer, a method of generating an output signal from an input signal and a machine-readable storage medium are provided. 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： 提供一种用于产生多声道合成器控制信号的装置和方法，多声道合成器，从输入信号产生输出信号的方法和机器可读存储介质。 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：US20130216047A1

公开(公告)日：2013-08-22

申请号：US13592977

申请日：2012-08-23

申请人： Fabian KUECH ,  Juergen HERRE ,  Christof FALLER ,  Christophe TOURNERY

发明人： Fabian KUECH ,  Juergen HERRE ,  Christof FALLER ,  Christophe TOURNERY

IPC分类号： H04R5/00

CPC分类号： H04R5/00 ,  G10L19/008 ,  G10L19/265 ,  G10L21/02

摘要： An apparatus for generating an enhanced downmix signal on the basis of a multi-channel microphone signal has a spatial analyzer configured to compute a set of spatial cue parameters having a direction information describing a direction-of-arrival of a direct sound, a direct sound power information and a diffuse sound power information on the basis of the multi-channel microphone signal. The apparatus also has a filter calculator for calculating enhancement filter parameters in dependence on the direction information describing the direction-of-arrival of the direct sound, in dependence on the direct sound power information and in dependence on the diffuse sound power information. The apparatus also has a filter for filtering the microphone signal, or a signal derived therefrom, using the enhancement filter parameters, to obtain the enhanced downmix signal.

摘要翻译： 一种用于基于多通道麦克风信号产生增强的下混合信号的装置具有空间分析器，该空间分析器被配置为计算具有描述直接声音到达方向的方向信息的一组空间提示参数，直接声音 功率信息和基于多声道麦克风信号的漫射声功率信息。 该装置还具有滤波器计算器，用于根据直接声功率信息和依赖于扩散声功率信息，根据描述直接声音到达方向的方向信息来计算增强滤波器参数。 该装置还具有用于使用增强滤波器参数对麦克风信号进行滤波的滤波器或从其导出的信号，以获得增强的降混信号。

公开(公告)号：US08346565B2

公开(公告)日：2013-01-01

申请号：US12440058

申请日：2007-10-23

申请人： Christian Uhle ,  Juergen Herre ,  Andreas Walther ,  Oliver Hellmuth ,  Christiaan Janssen

发明人： Christian Uhle ,  Juergen Herre ,  Andreas Walther ,  Oliver Hellmuth ,  Christiaan Janssen

IPC分类号： G10L19/00 ,  G10L11/00 ,  H04R5/00 ,  H03G3/00

CPC分类号： H04S5/005 ,  G10L19/008 ,  G10L19/02 ,  H04S2420/03

摘要： An apparatus for generating an ambient signal from an audio signal includes a compressor for lossy compression of a representation of the audio signal so as to obtain a compressed representation of the audio signal describing a compressed audio signal. The apparatus for generating the ambient signal further includes a calculator for calculating a difference between the compressed representation of the audio signal and the representation of the audio signal so as to obtain a discrimination representation. The apparatus further includes a provider for providing the ambient signal using the discrimination representation. An apparatus for deriving a multi-channel audio signal from an audio signal includes an apparatus for generating an ambient signal from an audio signal, an apparatus for providing the audio signal as a front-loudspeaker signal and an apparatus for providing the ambient signal as a back-loudspeaker signal.

摘要翻译： 一种用于从音频信号产生环境信号的装置包括用于对音频信号的表示进行有损压缩的压缩器，以便获得描述压缩音频信号的音频信号的压缩表示。 用于生成环境信号的装置还包括用于计算音频信号的压缩表示和音频信号的表示之间的差的计算器，以便获得鉴别表示。 该装置还包括提供者，用于使用识别表示来提供环境信号。 用于从音频信号导出多声道音频信号的装置包括用于从音频信号产生环境信号的装置，用于提供音频信号作为前置扬声器信号的装置，以及用于将环境信号提供为 后置扬声器信号。

公开(公告)号：US20120314876A1

公开(公告)日：2012-12-13

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

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： 一种用于从降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。