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1. 发明申请

US20110288873A1 AUDIO ENCODER AND BANDWIDTH EXTENSION DECODER 有权
标题翻译：音频编码器和带宽扩展解码器
公开(公告)号：US20110288873A1
公开(公告)日：2011-11-24
申请号：US13158547
申请日：2011-06-13
申请人： Frederik NAGEL , Sascha DISCH , Guillaume FUCHS , Juergen HERRE , Christian GRIEBEL
发明人： Frederik NAGEL , Sascha DISCH , Guillaume FUCHS , Juergen HERRE , Christian GRIEBEL
IPC分类号： G10L19/00
CPC分类号： G10L19/265 , G10L19/00 , G10L19/24 , G10L21/038
摘要： An audio encoder for providing an output signal using an input audio signal includes a patch generator, a comparator and an output interface. The patch generator generates at least one bandwidth extension high-frequency signal, wherein a bandwidth extension high-frequency signal includes a high-frequency band. The high-frequency band of the bandwidth extension high-frequency signal is based on a low frequency band of the input audio signal. A comparator calculates a plurality of comparison parameters. A comparison parameter is calculated based on a comparison of the input audio signal and a generated bandwidth extension high-frequency signal. Each comparison parameter of the plurality of comparison parameters is calculated based on a different offset frequency between the input audio signal and a generated bandwidth extension high-frequency signal. Further, the comparator determines a comparison parameter from the plurality of comparison parameters, wherein the determined comparison parameter fulfils a predefined criterion.
摘要翻译：用于使用输入音频信号提供输出信号的音频编码器包括片生成器，比较器和输出接口。贴片发生器产生至少一个带宽扩展高频信号，其中带宽扩展高频信号包括高频带。带宽扩展高频信号的高频带基于输入音频信号的低频带。比较器计算多个比较参数。基于输入音频信号和产生的带宽扩展高频信号的比较来计算比较参数。基于输入音频信号与生成的带宽扩展高频信号之间的不同偏移频率来计算多个比较参数的每个比较参数。此外，比较器确定来自多个比较参数的比较参数，其中确定的比较参数满足预定标准。

2. 发明申请

US20130010983A1 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL HAVING A TRANSIENT EVENT 审中-公开
标题翻译：用于处理具有瞬时事件的音频信号的装置和方法
公开(公告)号：US20130010983A1
公开(公告)日：2013-01-10
申请号：US13465958
申请日：2012-05-07
申请人： Sascha DISCH , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
发明人： Sascha DISCH , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
IPC分类号： G06F17/00 , G10L19/14 , H04R1/32
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.
摘要翻译：用于操纵具有瞬态事件的音频信号的信号操纵器可以具有瞬态去除器，信号处理器和信号插入器，用于在瞬态事件被去除的信号位置处将处理后的音频信号中的时间部分插入，去除器，使得被操纵的音频信号具有不受处理影响的瞬态事件，由此维持瞬态事件的垂直相干性而不是在信号处理器中执行的任何处理，这将破坏瞬态的垂直相干性。

3. 发明申请

US20130003992A1 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL HAVING A TRANSIENT EVENT 审中-公开
公开(公告)号：US20130003992A1
公开(公告)日：2013-01-03
申请号：US13465936
申请日：2012-05-07
申请人： Sascha DISCH , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
发明人： Sascha DISCH , Frederik Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
IPC分类号： H04B1/00
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.

4. 发明申请

US20140126725A1 TEMPORAL AND SPATIAL SHAPING OF MULTI-CHANNEL AUDIO SIGNAL 有权
标题翻译：多通道音频信号的时间和空间形状
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。

5. 发明申请

US20110106545A1 TEMPORAL AND SPATIAL SHAPING OF MULTI-CHANNEL AUDIO SIGNALS 有权
标题翻译：多通道音频信号的时间和空间形状
公开(公告)号：US20110106545A1
公开(公告)日：2011-05-05
申请号：US13007441
申请日：2011-01-14
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： G10L21/00
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。

6. 发明申请

US20130010985A1 DEVICE AND METHOD FOR MANIPULATING AN AUDIO SIGNAL HAVING A TRANSIENT EVENT 审中-公开
公开(公告)号：US20130010985A1
公开(公告)日：2013-01-10
申请号：US13465946
申请日：2012-05-07
申请人： Sascha DISCH , Frederick Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
发明人： Sascha DISCH , Frederick Nagel , Nikolaus Rettelbach , Markus Multrus , Guillaume Fuchs
IPC分类号： H04B1/00
CPC分类号： G10L21/04 , G10L19/025
摘要： A signal manipulator for manipulating an audio signal having a transient event may have a transient remover, a signal processor and a signal inserter for inserting a time portion in a processed audio signal at a signal location where the transient event was removed before processing by the transient remover, so that a manipulated audio signal has a transient event not influenced by the processing, whereby the vertical coherence of the transient event is maintained instead of any processing performed in the signal processor, which would destroy the vertical coherence of a transient.

7. 发明申请

US20130216053A1 APPARATUS AND METHOD FOR MODIFYING AN AUDIO SIGNAL USING ENVELOPE SHAPING 有权
标题翻译：使用信封形状修改音频信号的装置和方法
公开(公告)号：US20130216053A1
公开(公告)日：2013-08-22
申请号：US13588177
申请日：2012-08-17
申请人： Sascha DISCH
发明人： Sascha DISCH
IPC分类号： H03G3/00
CPC分类号： H03G3/00 , G10H1/08 , G10H1/20 , G10H3/125 , G10H2210/066 , G10H2250/031 , G10L21/00 , G10L25/18 , G10L25/90 , G10L2021/0135 , H03G5/00
摘要： An apparatus for modifying an audio signal has an envelope shape determiner, a filterbank processor, a signal processor, a combiner and an envelope shaper. The envelope shape determiner determines envelope shape coefficients based on the a frequency domain audio signal representing a time domain input audio signal and the filterbank processor generates a plurality of bandpass signals in a subband domain based on the frequency domain audio signal. Further the signal processor modifies a subband domain bandpass signal of the plurality of subband domain bandpass signals based on a predefined modification target. The combiner combines at least a subset of the plurality of subband domain bandpass signals containing the modified subband domain bandpass signal to obtain a time domain audio signal. Further, the envelope shaper is operative to obtain a shaped audio signal.
摘要翻译：用于修改音频信号的装置具有包络形状确定器，滤波器组处理器，信号处理器，组合器和信封整形器。信封形状确定器基于表示时域输入音频信号的频域音频信号来确定包络形状系数，并且滤波器组处理器基于频域音频信号在子带域中产生多个带通信号。此外，信号处理器基于预定义的修改目标来修改多个子带域带通信号的子带域带通信号。组合器组合包含经修改的子带域带通信号的多个子带域带通信号的至少一个子集，以获得时域音频信号。此外，信封整形器可操作以获得成形的音频信号。

8. 发明申请

US20130117015A1 AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR DECODING AN AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND COMPUTER PROGRAM USING A PITCH-DEPENDENT ADAPTATION OF A CODING CONTEXT 有权
标题翻译：音频信号解码器，音频信号编码器，用于解码音频信号的方法，用于编码音频信号的方法和使用与编码语境相关的适应性的计算机程序
公开(公告)号：US20130117015A1
公开(公告)日：2013-05-09
申请号：US13608980
申请日：2012-09-10
申请人： Stefan BAYER , Tom BAECKSTROEM , Ralf GEIGER , Bernd EDLER , Sascha DISCH , Lars VILLEMOES
发明人： Stefan BAYER , Tom BAECKSTROEM , Ralf GEIGER , Bernd EDLER , Sascha DISCH , Lars VILLEMOES
IPC分类号： G10L19/00
CPC分类号： G10L19/022 , G10L19/0212 , G10L25/90
摘要： An audio signal decoder includes a context-based spectral value decoder configured to decode a codeword describing one or more spectral values or at least a portion of a number representation thereof in dependence on a context state. The audio signal decoder also includes a context state determinator configured to determine a current context state in dependence on one or more previously decoded spectral values and a time warping frequency-domain-to-time-domain converter configured to provide a time-warped time-domain representation of a given audio frame on the basis of a set of decoded spectral values provided by the context-based spectral value decoder and in dependence on the time warp information. The context-state determinator is configured to adapt the determination of the context state to a change of a fundamental frequency between subsequent audio frames. An audio signal encoder applies a comparable concept.
摘要翻译：音频信号解码器包括基于上下文的频谱值解码器，其被配置为根据上下文状态来解码描述一个或多个频谱值的码字或其数字表示的至少一部分。音频信号解码器还包括上下文状态确定器，其被配置为根据一个或多个先前解码的频谱值确定当前上下文状态，以及时间扭曲频域 - 时域转换器，被配置为提供时间扭曲的时域 - 基于由基于上下文的频谱值解码器提供的解码频谱值的集合并且依赖于时间扭曲信息，给定音频帧的域表示。上下文状态确定器被配置为使上下文状态的确定适应随后的音频帧之间的基频的改变。音频信号编码器应用可比较的概念。

9. 发明申请

US20130182862A1 APPARATUS AND METHOD FOR MODIFYING AN AUDIO SIGNAL USING HARMONIC LOCKING 有权
标题翻译：使用谐波锁定来修改音频信号的装置和方法
公开(公告)号：US20130182862A1
公开(公告)日：2013-07-18
申请号：US13587143
申请日：2012-08-16
申请人： Sascha DISCH
发明人： Sascha DISCH
IPC分类号： H03G5/00
CPC分类号： H03G3/00 , G10H1/08 , G10H1/20 , G10H3/125 , G10H2210/066 , G10H2250/031 , G10L21/00 , G10L25/18 , G10L25/90 , G10L2021/0135 , H03G5/00
摘要： An apparatus for modifying an audio signal includes a filterbank processor, a fundamental determiner, an overtone determiner, a signal processor and a combiner. The filterbank processor generates a plurality of bandpass signals based on an audio signal and the fundamental determiner selects a bandpass signal of the plurality of bandpass signals to obtain a fundamental bandpass signal. The overtone determiner identifies a bandpass signal of the plurality of bandpass signals fulfilling an overtone criterion regarding the selected fundamental bandpass signal to obtain an overtone bandpass signal associated to the selected fundamental bandpass signal. The signal processor modifies the selected fundamental bandpass signal based on a predefined modification target. Additionally, the signal processor modifies an identified overtone bandpass signal associated to the selected fundamental bandpass signal depending on the modification of the selected fundamental bandpass signal. Further, the combiner combines the plurality of bandpass signals to obtain a modified audio signal.
摘要翻译：用于修改音频信号的装置包括滤波器组处理器，基本确定器，泛音确定器，信号处理器和组合器。滤波器组处理器基于音频信号生成多个带通信号，并且基本确定器选择多个带通信号的带通信号以获得基本带通信号。泛音确定器识别满足所选择的基带通信信号的泛音准则的多个带通信号的带通信号，以获得与所选择的基带通信信号相关联的泛音带通信号。信号处理器基于预定义的修改目标来修改所选择的基带通信信号。此外，信号处理器根据所选择的基带通信信号的修改来修改与所选择的基带通信信号相关联的所识别的泛音带通信号。此外，组合器组合多个带通信号以获得修改的音频信号。

10. 发明申请

US20110313777A1 APPARATUS, METHOD AND COMPUTER PROGRAM FOR OBTAINING A PARAMETER DESCRIBING A VARIATION OF A SIGNAL CHARACTERISTIC OF A SIGNAL 有权
标题翻译：用于获取描述信号信号特征变化的参数的装置，方法和计算机程序
公开(公告)号：US20110313777A1
公开(公告)日：2011-12-22
申请号：US13186688
申请日：2011-07-20
申请人： Tom BAECKSTROEM , Stefan BAYER , Ralf GEIGER , Max NEUENDORF , Sascha DISCH
发明人： Tom BAECKSTROEM , Stefan BAYER , Ralf GEIGER , Max NEUENDORF , Sascha DISCH
IPC分类号： G10L19/00
CPC分类号： G10L25/90
摘要： An apparatus for obtaining a parameter describing a variation of a signal characteristic of a signal on the basis of actual transform-domain parameters describing the audio signal in transform-domain includes a parameter determinator. The parameter determinator is configured to determine one or more model parameters of a transform-domain variation model describing an evolution of the transform-domain parameters in dependence on one or more model parameters representing a signal characteristic, such that a model error, representing a deviation between a modeled temporal evolution of the transform-domain parameters and an evolution of the actual transform-domain parameters, is brought below a predetermined threshold value or minimized.
摘要翻译：基于描述变换域中的音频信号的实际变换域参数，获得描述信号的信号特性变化的参数的装置包括参数确定器。参数确定器被配置为根据表示信号特性的一个或多个模型参数来确定描述变换域参数的演变的变换域变体模型的一个或多个模型参数，使得表示偏差的模型误差在变换域参数的建模的时间演变与实际的变换域参数的演化之间，被降低到预定阈值以下或最小化。

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