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21. 发明授权

US08160888B2 Generation of multi-channel audio signals 有权
标题翻译：生成多声道音频信号
公开(公告)号：US08160888B2
公开(公告)日：2012-04-17
申请号：US11995700
申请日：2006-07-12
申请人： Dirk Jeroen Breebaart , Lars Falck Villemoes , Heiko Purnhagen , Christof Faller
发明人： Dirk Jeroen Breebaart , Lars Falck Villemoes , Heiko Purnhagen , Christof Faller
IPC分类号： G10L19/00
CPC分类号： H04S3/008 , G10L19/008
摘要： A decoder (115) generates a multi channel audio signal, such as a surround sound signal, from a received first signal. The multi-channel signal comprises a second set of audio channels and the first signal comprises a first set of audio channels. The decoder (115) comprises a receiver (401) which receives the first signal. The receiver (401) is coupled to an estimate processor (405) which generates estimated parametric data for the second set of audio channels in response to characteristics of the first set of audio channels. The estimated parametric data relates characteristics of the second set of audio channels to characteristics of the first set of audio channels. The decoder (115) furthermore comprises a spatial audio decoder (403) which decodes the first signal in response to the estimated parametric data to generate the multi-channel signal comprising the second set of channels. The invention allows use of spatial audio decoding with signals that are not encoded by a spatial audio encoder.
摘要翻译：解码器（115）从接收的第一信号生成诸如环绕声信号的多声道音频信号。多声道信号包括第二组音频通道，第一信号包括第一组音频通道。解码器（115）包括接收第一信号的接收机（401）。接收器（401）耦合到估计处理器（405），该估计处理器响应于第一组音频通道的特性而产生第二组音频通道的估计参数数据。估计的参数数据将第二组音频通道的特性与第一组音频通道的特性相关联。解码器（115）还包括空间音频解码器（403），其响应于所估计的参数数据对第一信号进行解码，以产生包括第二组信道的多信道信号。本发明允许对空间音频编码器未编码的信号使用空间音频解码。

22. 发明授权

US08144879B2 Method, device, encoder apparatus, decoder apparatus and audio system 有权
标题翻译：方法，设备，编码器装置，解码装置和音频系统
公开(公告)号：US08144879B2
公开(公告)日：2012-03-27
申请号：US12882849
申请日：2010-09-15
申请人： Machiel Willem Van Loon , Dirk Jeroen Breebaart , Gerard Herman Hotho , Erik Gosuinus Petrus Schuijers , Heiko Purnhagen , Karl Jonas Roeden
发明人： Machiel Willem Van Loon , Dirk Jeroen Breebaart , Gerard Herman Hotho , Erik Gosuinus Petrus Schuijers , Heiko Purnhagen , Karl Jonas Roeden
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： A method and a device are described for processing a stereo signal obtained from an encoder, which encodes an N-channel audio signal into spatial parameters (P) and a stereo down-mix comprising first and second stereo signals (LO, RO). A first signal and a third signal are added in order to obtain a first output signal (L0w), wherein the first signal (L0wL) comprises the first stereo signal (LO) modified by a first complex function (g1), and the third signal (L0wR) comprises the second stereo signal (RO) modified by a third complex function (g3). A second signal and a fourth signal are added to obtain a second output signal (R0w). The fourth signal (R0wR) comprises the second stereo signal (RO) modified by a fourth complex function (g4), and the second signal (R0wL) comprises the first stereo signal (LO) modified by a second complex function (g2). The complex functions (g1, g2, g3, g4) are functions of the spatial parameters (P) and are chosen to be such that an energy value of the difference (L0wL,R0wL) between the first signal and the second signal is larger than or equal to the energy value of the sum (L0wL+R0wL) of the first and the second signal, and the energy value of the difference (R0wR−L0wR) between the fourth signal and the third signal is larger than or equal to the energy value of the sum (R0wR+L0wR) of the fourth signal and the third signal.
摘要翻译：描述了一种用于处理从编码器获得的立体声信号的方法和装置，其将N声道音频信号编码为空间参数（P）和包括第一和第二立体声信号（LO，RO）的立体声下混合。添加第一信号和第三信号以获得第一输出信号（L0w），其中第一信号（L0wL）包括由第一复函数（g1）修改的第一立体声信号（LO）和第三信号（L0wR）包括由第三复合函数（g3）修改的第二立体声信号（RO）。添加第二信号和第四信号以获得第二输出信号（R0w）。第四信号（R0wR）包括由第四复数函数（g4）修改的第二立体声信号（RO），第二信号（R0wL）包括由第二复函数（g2）修改的第一立体声信号（LO）。复合函数（g1，g2，g3，g4）是空间参数（P）的函数，并且被选择为使得第一信号和第二信号之间的差值（L0wL，R0wL）的能量值大于或等于第一和第二信号的和（L0wL + R0wL）的能量值，并且第四信号和第三信号之间的差值（R0wR-L0wR）的能量值大于或等于能量第四信号和第三信号的和（R0wR + L0wR）的值。

23. 发明授权

US07974713B2 Temporal and spatial shaping of multi-channel audio signals 有权
标题翻译：多通道音频信号的时空整形
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。

24. 发明申请

US20100215199A1 METHOD FOR HEADPHONE REPRODUCTION, A HEADPHONE REPRODUCTION SYSTEM, A COMPUTER PROGRAM PRODUCT 有权
标题翻译：耳机生成方法，耳机生成系统，计算机程序产品
公开(公告)号：US20100215199A1
公开(公告)日：2010-08-26
申请号：US12680584
申请日：2008-10-01
申请人： Dirk Jeroen Breebaart
发明人： Dirk Jeroen Breebaart
IPC分类号： H04R5/02
CPC分类号： H04S5/005 , H04S2400/05
摘要： A method for headphone reproduction of at least two input channel signals is proposed. Said method comprises for each pair of input channel signals from said at least two input channel signals the following steps. First, a common component, an estimated desired position corresponding to said common component, and two residual components corresponding to two input channel signals in said pair of input channel signals are determined. Said determining is being based on said pair of said input channel signals. Each of said residual components is derived from its corresponding input channel signal by subtracting a contribution of the common component. Said contribution is being related to the estimated desired position of the common component. Second, a main virtual source comprising said common component at the estimated desired position and two further virtual sources each comprising a respective one of said residual components at respective predetermined positions are synthesized.
摘要翻译：提出了一种用于耳机再现至少两个输入通道信号的方法。所述方法包括对于来自所述至少两个输入通道信号的每对输入通道信号，以下步骤。首先，确定公共分量，对应于所述公共分量的估计期望位置和对应于所述输入通道信号对中的两个输入通道信号的两个残差分量。所述确定是基于所述一对所述输入通道信号。通过减去公共部件的贡献，从其相应的输入通道信号导出每个所述残余分量。所述贡献与公共部件的估计期望位置有关。第二，合成了在所述估计的期望位置处包括所述公共分量的主虚拟源和在各个预定位置处包括相应的一个所述残余分量的两个另外的虚拟源。

25. 发明申请

US20090083040A1 ENCODING AND DECODING A SET OF SIGNALS 有权
标题翻译：编码和解码一组信号
公开(公告)号：US20090083040A1
公开(公告)日：2009-03-26
申请号：US11718239
申请日：2005-10-31
申请人： Francois Philippus Myburg , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers
发明人： Francois Philippus Myburg , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers
IPC分类号： G10L21/00
CPC分类号： G10L19/008
摘要： An encoding device (1) and method convert a set of signals (l, r) into a dominant signal (m) containing most signal energy, a residual signal (s) containing a remainder of the signal energy, and signal parameters (IID, ICC) associated with the conversion. The dominant signal (m) and selected parts of the residual signal (s) are encoded. Selecting parts of the residual signal involves a residual signal (′) passing perceptually relevant parts of the residual signal (s), attenuating perceptually less relevant parts of the residual signal and suppressing least relevant parts of the residual signal. An associated decoding device (2) and method decode the encoded dominant signal and the encoded residual signal so as to produce a decoded dominant signal (m′u) and a decoded residual signal (s′mod) respectively. A synthetic residual signal (s′syn) is derived from the decoded dominant signal (m′u) and is attenuated so as to produce an attenuated synthetic residual signal (S′Syn,mod). The attenuated synthetic residual signal (Ssyn, mod) and the decoded residual signal (S′mod) are combined to produce a reconstructed residual signal (s′). The decoded dominant signal (m′) and the reconstructed residual signal (s′) are then converted into a set of output signals (l′, r′).
摘要翻译：一种编码装置（1）和方法，将一组信号（1，r）转换成包含大多数信号能量的显性信号（m），包含信号能量的剩余部分的残余信号和信号参数（IID， ICC）与转换相关联。对主要信号（m）和剩余信号的选定部分进行编码。选择残留信号的部分包括通过残留信号的感知相关部分的残留信号（'），衰减感知上较少的残余信号的相关部分并抑制残余信号的最小相关部分。相关联的解码装置（2）和方法对编码的主导信号和编码的残余信号进行解码，以分别产生解码的主导信号（m'u）和解码的残余信号（s'mod）。合成残差信号（s'syn）从解码的主导信号（m'u）导出，并被衰减，以产生衰减的合成残差信号（S'Syn，mod）。衰减的合成残差信号（Ssyn，mod）和解码的残留信号（S'mod）被组合以产生重建的残余信号（s'）。解码后的主导信号（m'）和重建的残余信号（s'）然后被转换成一组输出信号（1'，r'）。

26. 发明申请

US20090043591A1 AUDIO ENCODING AND DECODING 有权
标题翻译：音频编码和解码
公开(公告)号：US20090043591A1
公开(公告)日：2009-02-12
申请号：US12279856
申请日：2007-02-13
申请人： Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Arnoldus Werner Johannes Oomen
发明人： Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Arnoldus Werner Johannes Oomen
IPC分类号： G10L21/00
CPC分类号： G10L19/008 , H04S3/004 , H04S5/005 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An audio encoder comprises a multi-channel receiver (401) which receives an M-channel audio signal where M>2. A down-mix processor (403) down-mixes the M-channel audio signal to a first stereo signal and associated parametric data and a spatial processor (407) modifies the first stereo signal to generate a second stereo signal in response to the associated parametric data and spatial parameter data for a binaural perceptual transfer function, such as a Head Related Transfer Function (HRTF). The second stereo signal is a binaural signal and may specifically be a (3D) virtual spatial signal. An output data stream comprising the encoded data and the associated parametric data is generated by an encode processor (411) and an output processor (413). The HRTF processing may allow the generation of a (3D) virtual spatial signal by conventional stereo decoders. A multi-channel decoder may reverse the process of the spatial processor (407) to generate an improved quality multi-channel signal.
摘要翻译：音频编码器包括接收M> 2的M声道音频信号的多声道接收器（401）。下混合处理器（403）将M声道音频信号下混合到第一立体声信号和相关联的参数数据，并且空间处理器（407）修改第一立体声信号以响应于相关参数而产生第二立体声信号用于双耳感知传递函数的数据和空间参数数据，例如头部相关传递函数（HRTF）。第二立体声信号是双耳信号，并且可以具体地是（3D）虚拟空间信号。包括编码数据和相关参数数据的输出数据流由编码处理器（411）和输出处理器（413）产生。 HRTF处理可以允许由常规立体声解码器生成（3D）虚拟空间信号。多通道解码器可以反转空间处理器（407）的处理以产生改进的质量多信道信号。

27. 发明申请

US20080281590A1 Method of Deriving a Set of Features for an Audio Input Signal 有权
标题翻译：导出音频输入信号的一组特征的方法
公开(公告)号：US20080281590A1
公开(公告)日：2008-11-13
申请号：US12090362
申请日：2006-10-16
申请人： Dirk Jeroen Breebaart , Martin Franciscus McKinney
发明人： Dirk Jeroen Breebaart , Martin Franciscus McKinney
IPC分类号： G10H1/00
CPC分类号： G10H1/0008 , G10H2210/031 , G10H2210/041 , G10H2240/081
摘要： The invention describes a method of deriving a set of features (S) of an audio input signal (M), which method comprises identifying a number of first-order features (f1, f2, . . . , ff) of the audio input signal (M), generating a number of correlation values (ρ1, ρ2, . . . , PI) from at least part of the first-order features (f1, f2, . . . , ff), and compiling the set of features (S) for the audio input signal (M) using the correlation values (ρ1, ρ2, . . . , ρI). The invention further describes a method of classifying an audio input signal (M) into a group, and a method of comparing audio input signals (M, M′) to determine a degree of similarity between the audio input signals (M, M′). The invention also describes a system (1) for deriving a set of features (S) of an audio input signal (M), a classifying system (4) for classifying an audio input signal (M) into a group, and a comparison system (5) for comparing audio input signals (M, M′) to determine a degree of similarity between the audio input signals (M, M′).
摘要翻译：本发明描述了一种导出音频输入信号（M）的一组特征（S）的方法，该方法包括识别多个一阶特征（f 1，...，f 2）音频输入信号（M）的输出信号（M），产生多个相关值（rho1，...，r2，...，从第一阶特征（f 1 1，f 2，...，N 2）的至少一部分开始，并且使用相关值（rho <1>，rho 2 ，...，rho ）。本发明还描述了一种将音频输入信号（M）分类成一组的方法，以及一种比较音频输入信号（M，M'）以确定音频输入信号（M，M'）之间的相似程度的方法，。本发明还描述了一种用于导出音频输入信号（M）的一组特征（S）的系统（1），用于将音频输入信号（M）分类成一组的分类系统（4）和比较系统（5），用于比较音频输入信号（M，M'）以确定音频输入信号（M，M'）之间的相似度。

28. 发明申请

US20080205658A1 Audio Coding 有权
标题翻译：音频编码
公开(公告)号：US20080205658A1
公开(公告)日：2008-08-28
申请号：US12066509
申请日：2006-08-31
申请人： Dirk Jeroen Breebaart
发明人： Dirk Jeroen Breebaart
IPC分类号： H04R5/00
CPC分类号： H04S3/004 , H04R2499/11 , H04S7/30 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： A spatial decoder unit (23) is arranged for transforming one or more audio channels (s; l, r) into a pair of bin-aural output channels (Ib, rb). The device comprises a parameter conversion unit (234) for converting the spatial parameters (sp) into binaural parameters (bp) containing binaural information. The device additionally comprises a spatial synthesis unit (232) for transforming the audio channels (L, R) into a pair of binaural signals (Lb, Rb) while using the binaural parameters (bp). The spatial synthesis unit (232) preferably operates in a transform domain, such as the QMF domain.
摘要翻译：空间解码器单元（23）被布置用于将一个或多个音频通道（s，l，r）变换成一对二声道输出通道（Ib，rb）。该装置包括用于将空间参数（sp）转换为包含双耳信息的双耳参数（bp）的参数转换单元（234）。该装置还包括用于在使用双耳参数（bp）的同时将音频通道（L，R）变换为一对双耳信号（Lb，Rb）的空间合成单元（232）。空间合成单元（232）优选地在诸如QMF域的变换域中操作。

29. 发明授权

US09191763B2 Method for headphone reproduction, a headphone reproduction system, a computer program product 有权
标题翻译：用于耳机再现的方法，耳机再现系统，计算机程序产品
公开(公告)号：US09191763B2
公开(公告)日：2015-11-17
申请号：US12680584
申请日：2008-10-01
申请人： Dirk Jeroen Breebaart
发明人： Dirk Jeroen Breebaart
IPC分类号： H04S5/00
CPC分类号： H04S5/005 , H04S2400/05
摘要： A method for headphone reproduction of at least two input channel signals is proposed. Said method comprises for each pair of input channel signals from said at least two input channel signals the following steps. First, a common component, an estimated desired position corresponding to said common component, and two residual components corresponding to two input channel signals in said pair of input channel signals are determined. Said determining is being based on said pair of said input channel signals. Each of said residual components is derived from its corresponding input channel signal by subtracting a contribution of the common component. Said contribution is being related to the estimated desired position of the common component. Second, a main virtual source comprising said common component at the estimated desired position and two further virtual sources each comprising a respective one of said residual components at respective predetermined positions are synthesized.
摘要翻译：提出了一种用于耳机再现至少两个输入通道信号的方法。所述方法包括对于来自所述至少两个输入通道信号的每对输入通道信号，以下步骤。首先，确定公共分量，对应于所述公共分量的估计期望位置和对应于所述输入通道信号对中的两个输入通道信号的两个残差分量。所述确定是基于所述一对所述输入通道信号。通过减去公共部件的贡献，从其相应的输入通道信号导出每个所述残余分量。所述贡献与公共部件的估计期望位置有关。第二，合成了在所述估计的期望位置处包括所述公共分量的主虚拟源和在各个预定位置处包括相应的一个所述残余分量的两个另外的虚拟源。

30. 发明授权

US09009057B2 Audio encoding and decoding to generate binaural virtual spatial signals 有权
标题翻译：音频编码和解码产生双耳虚拟空间信号
公开(公告)号：US09009057B2
公开(公告)日：2015-04-14
申请号：US12279856
申请日：2007-02-13
申请人： Dirk Jeroen Breebaart , Erik Gouinus Petrus Schuijers , Arnoldus Werner Johannes Oomen
发明人： Dirk Jeroen Breebaart , Erik Gouinus Petrus Schuijers , Arnoldus Werner Johannes Oomen
IPC分类号： G10L19/00 , H04S5/00 , H04S3/00
CPC分类号： G10L19/008 , H04S3/004 , H04S5/005 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An audio encoder comprises a multi-channel receiver (401) which receives an M-channel audio signal where M>2. A down-mix processor (403) down-mixes the M-channel audio signal to a first stereo signal and associated parametric data and a spatial processor (407) modifies the first stereo signal to generate a second stereo signal in response to the associated parametric data and spatial parameter data for a binaural perceptual transfer function, such as a Head Related Transfer Function (HRTF). The second stereo signal is a binaural signal and may specifically be a (3D) virtual spatial signal. An output data stream comprising the encoded data and the associated parametric data is generated by an encode processor (411) and an output processor (413). The HRTF processing may allow the generation of a (3D) virtual spatial signal by conventional stereo decoders. A multi-channel decoder may reverse the process of the spatial processor (407) to generate an improved quality multi-channel signal.
摘要翻译：音频编码器包括接收M> 2的M声道音频信号的多声道接收器（401）。下混合处理器（403）将M声道音频信号下混合到第一立体声信号和相关联的参数数据，并且空间处理器（407）修改第一立体声信号以响应于相关参数而产生第二立体声信号用于双耳感知传递函数的数据和空间参数数据，例如头部相关传递函数（HRTF）。第二立体声信号是双耳信号，并且可以具体地是（3D）虚拟空间信号。包括编码数据和相关参数数据的输出数据流由编码处理器（411）和输出处理器（413）产生。 HRTF处理可以允许由常规立体声解码器生成（3D）虚拟空间信号。多通道解码器可以反转空间处理器（407）的处理以产生改进的质量多信道信号。

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