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11.发明授权公开(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。
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12.发明申请METHOD FOR HEADPHONE REPRODUCTION, A HEADPHONE REPRODUCTION SYSTEM, A COMPUTER PROGRAM PRODUCT 有权耳机生成方法，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
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。
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公开(公告)号：US20090083040A1
公开(公告)日：2009-03-26
申请号：US11718239
申请日：2005-10-31
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'）。
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公开(公告)号：US20090043591A1
公开(公告)日：2009-02-12
申请号：US12279856
申请日：2007-02-13
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。
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公开(公告)号：US20080281590A1
公开(公告)日：2008-11-13
申请号：US12090362
申请日：2006-10-16
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
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公开(公告)号：US20080205658A1
公开(公告)日：2008-08-28
申请号：US12066509
申请日：2006-08-31
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。
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公开(公告)号：US09992599B2
公开(公告)日：2018-06-05
申请号：US10599560
申请日：2005-03-30
IPC分类号： H04R5/00 , H04S3/00 , G10L19/008 , H04S3/02
CPC分类号： H04S3/008 , G10L19/008 , H04S3/02 , H04S2420/03
摘要： Method for processing a stereo signal includes encoding an N-channel audio signal in a stereo signal (Lo, Ro) and spatial parameters (wl, wr), processing the stereo signal using the spatial parameters for generating a processed stereo signal (low, Row). The matrix of the processed stereo signal is described as the matrix of the stereo signal, multiplied by a filter matrix (H) having element that are filter functions (H1, H2, H3, H4) operated with spatial parameters (wl, wr) and a constant (a). The filter functions are time invariant and selected so that the matrix is invertible.
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公开(公告)号：US09462387B2
公开(公告)日：2016-10-04
申请号：US13989420
申请日：2012-01-03
申请人： Arnoldus Werner Johannes Oomen , Dirk Jeroen Breebaart , Jeroen Gerardus Henricus Koppens , Erik Gosuinus Petrus Schuijers
发明人： Arnoldus Werner Johannes Oomen , Dirk Jeroen Breebaart , Jeroen Gerardus Henricus Koppens , Erik Gosuinus Petrus Schuijers
CPC分类号： H04R5/04 , G10K15/12 , H04S3/004 , H04S2420/01
摘要： An audio system comprises a receiver (301) for receiving an audio signal, such as an audio object or a signal of a channel of a spatial multi-channel signal. A binaural circuit (303) generates a binaural output signal by processing the audio signal. The processing is representative of a binaural transfer function providing a virtual sound source position for the audio signal. A measurement circuit (307) generating measurement data indicative of a characteristic of the acoustic environment and a determining circuit (311) determines an acoustic environment parameter in response to the measurement data. The acoustic environment parameter may typically be a reverberation parameter, such as a reverberation time. An adaptation circuit (313) adapts the binaural transfer function in response to the acoustic environment parameter. For example, the adaptation may modify a reverberation parameter to more closely resemble the reverberation characteristics of the acoustic environment.
摘要翻译： 音频系统包括用于接收音频信号的接收器（301），诸如音频对象或空间多声道信号的信道的信号。 双耳电路（303）通过处理音频信号产生双耳输出信号。 该处理代表提供音频信号的虚拟声源位置的双耳传递函数。 产生表示声学环境的特性的测量数据的测量电路（307）和确定电路（311）响应于测量数据确定声学环境参数。 声学环境参数通常可以是混响参数，例如混响时间。 适应电路（313）响应于声学环境参数来适应双耳传递函数。 例如，适应可以将混响参数修改为更接近于声学环境的混响特性。
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公开(公告)号：US08346564B2
公开(公告)日：2013-01-01
申请号：US11909730
申请日：2006-03-16
申请人： Gerard Herman Hotho , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
发明人： Gerard Herman Hotho , Dirk Jeroen Breebaart , Erik Gosuinus Petrus Schuijers , Albertus Cornelis Den Brinker , Lars Falck Villemoes , Heiko Purnhagen , Karl Jonas Roden
CPC分类号： G10L19/008 , H04R2420/07 , H04S3/008
摘要： A multi-channel audio encoder (10) for encoding a multi-channel audio signal (101), e.g. a 5.1 channel audio signal, into a spatial down-mix (102), e.g. a stereo signal, and associated parameters (104, 105). The encoder (10) comprises first and second units (110, 120). The first unit (110) encodes the multi-channel audio signal (101) into the spatial down-mix (102) and parameters (104). These parameters (104) enable a multi-channel decoder (20) to reconstruct the multi-channel audio signal (203) from the spatial down-mix (102). The second unit (120) generates, from the spatial down-mix (102), parameters (105) that enable the decoder to reconstruct the spatial down-mix (202) from an alternative down-mix (103), e.g. a so-called artistic down-mix that has been manually mixed in a sound studio. In this way, the decoder (20) can efficiently deal with a situation in which an alternative down-mix (103) is received instead of the regular spatial, down-mix (102). In the decoder (20), first the spatial down-mix (202) is reconstructed from the alternative down-mix (103) and the parameters (105). Next, the spatial down-mix (202) is decoded into the multi-channel audio signal (203).
摘要翻译： 一种用于对多声道音频信号（101）进行编码的多声道音频编码器（10）。 5.1声道音频信号转换成空间缩混（102）。 立体声信号和相关参数（104,105）。 编码器（10）包括第一和第二单元（110,120）。 第一单元（110）将多声道音频信号（101）编码成空间缩混（102）和参数（104）。 这些参数（104）使得多声道解码器（20）能够从空间缩混（102）重建多声道音频信号（203）。 第二单元（120）从空间缩混（102）生成参数（105），使参数（105）能够使解码器从替代的下混合（103）重构空间缩混（202）。 所谓的艺术混合，已经在一个健全的工作室手工混合。 以这种方式，解码器（20）可以有效地处理接收替代的下混合（103）而不是常规的空间，混合（102）的情况。 在解码器（20）中，首先，从替代的下混合（103）和参数（105）重构空间缩混（202）。 接下来，空间缩混（202）被解码为多声道音频信号（203）。
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公开(公告)号：US08010373B2
公开(公告)日：2011-08-30
申请号：US12900733
申请日：2010-10-08
IPC分类号： G10L21/04
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 (s′) 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 (s′syn,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。 选择残余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（s'），衰减感知上较少的残余信号的相关部分并抑制残留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（s'syn，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'）。
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