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公开(公告)号：US08160888B2
公开(公告)日：2012-04-17
申请号：US11995700
申请日：2006-07-12
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。
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公开(公告)号：US20080201153A1
公开(公告)日：2008-08-21
申请号：US11995700
申请日：2006-07-12
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。
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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：US08265284B2
公开(公告)日：2012-09-11
申请号：US12681124
申请日：2008-09-30
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An apparatus for generating a binaural audio signal includes a de-multiplexer and decoder which receives audio data comprising an audio M-channel audio signal which is a downmix of an N-channel audio signal and spatial parameter data for upmixing the M-channel audio signal to the N-channel audio signal. A conversion processor converts spatial parameters of the spatial parameter data into first binaural parameters in response to at least one binaural perceptual transfer function. A matrix processor converts the M-channel audio signal into a first stereo signal in response to the first binaural parameters. A stereo filter generates the binaural audio signal by filtering the first stereo signal. The filter coefficients for the stereo filter are determined in response to the at least one binaural perceptual transfer function by a coefficient processor. The combination of parameter conversion/processing and filtering allows a high quality binaural signal to be generated with low complexity.
摘要翻译： 一种用于产生双耳音频信号的装置包括解复用器和解码器，其接收音频数据，音频数据包括作为N声道音频信号的下混的音频M声道音频信号和用于上混M声道音频信号的空间参数数据 到N声道音频信号。 转换处理器响应于至少一个双耳感知传递函数将空间参数数据的空间参数转换成第一双耳参数。 矩阵处理器响应于第一双耳参数将M声道音频信号转换成第一立体声信号。 立体声滤波器通过对第一立体声信号进行滤波来产生双耳音频信号。 响应于系数处理器的至少一个双耳感知传递函数来确定用于立体声滤波器的滤波器系数。 参数转换/处理和滤波的组合允许以低复杂度产生高质量的双耳信号。
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公开(公告)号：US20100246832A1
公开(公告)日：2010-09-30
申请号：US12681124
申请日：2008-09-30
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An apparatus for generating a binaural audio signal includes a de-multiplexer and decoder which receives audio data comprising an audio M-channel audio signal which is a downmix of an N-channel audio signal and spatial parameter data for upmixing the M-channel audio signal to the N-channel audio signal. A conversion processor converts spatial parameters of the spatial parameter data into first binaural parameters in response to at least one binaural perceptual transfer function. A matrix processor converts the M-channel audio signal into a first stereo signal in response to the first binaural parameters. A stereo filter generates the binaural audio signal by filtering the first stereo signal. The filter coefficients for the stereo filter are determined in response to the at least one binaural perceptual transfer function by a coefficient processor. The combination of parameter conversion/processing and filtering allows a high quality binaural signal to be generated with low complexity.
摘要翻译： 一种用于产生双耳音频信号的装置包括解复用器和解码器，其接收音频数据，音频数据包括作为N声道音频信号的下混的音频M声道音频信号和用于上混M声道音频信号的空间参数数据 到N声道音频信号。 转换处理器响应于至少一个双耳感知传递函数将空间参数数据的空间参数转换成第一双耳参数。 矩阵处理器响应于第一双耳参数将M声道音频信号转换成第一立体声信号。 立体声滤波器通过对第一立体声信号进行滤波来产生双耳音频信号。 响应于系数处理器的至少一个双耳感知传递函数来确定用于立体声滤波器的滤波器系数。 参数转换/处理和滤波的组合允许以低复杂度产生高质量的双耳信号。
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6.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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7.发明申请公开(公告)号：US20110058679A1
公开(公告)日：2011-03-10
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 (L0, R0). A first signal and a third signal are added in order to obtain a first output signal (Low), wherein the first signal (L0wL) comprises the first stereo signal (L0) modified by a first complex function (g1), and the third signal (L0wR) comprises the second stereo signal (R0) 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 (R0) modified by a fourth complex function (g4), and the second signal (R0wL) comprises the first stereo signal (L0) 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（L0，R0）的立体声缩混混音。 添加第一信号和第三信号以获得第一输出信号（Low），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（L0）和第三信号 （L0wR）包括由第三复数函数（g3）修改的第二立体声信号（R0）。 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（R0），第二信号（R0wL）包括由第二复函数（g2）修改的第一立体声信号（L0）。 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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公开(公告)号：US08687829B2
公开(公告)日：2014-04-01
申请号：US12445699
申请日：2007-10-05
申请人： Johannes Hilpert , Karsten Linzmeier , Juergen Herre , Ralph Sperschneider , Andreas Hoelzer , Lars Villemoes , Jonas Engdegard , Heiko Purnhagen , Kristofer Kjoerling , Dirk Jeroen Breebaart , Werner Oomen
发明人： Johannes Hilpert , Karsten Linzmeier , Juergen Herre , Ralph Sperschneider , Andreas Hoelzer , Lars Villemoes , Jonas Engdegard , Heiko Purnhagen , Kristofer Kjoerling , Dirk Jeroen Breebaart , Werner Oomen
IPC分类号： H04R5/02
CPC分类号： G10L19/173 , G10L19/008 , H04S2420/03
摘要： A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeaker configuration. The level parameter are generated based on object parameters for a plurality of audio objects associated to a down-mix channel, which is generated using object audio signals associated to the audio objects. The object parameters have an energy parameter indicating an energy of the object audio signal. To derive the coherence and the level parameters, a parameter generator is used, which combines the energy parameter and object rendering parameters, which depend on a desired rendering configuration.
摘要翻译： 参数变换器产生电平参数，指示与多声道扬声器配置相关联的多声道音频信号的第一和第二音频声道之间的能量关系。 基于与下混通道相关联的多个音频对象的对象参数生成电平参数，该对象参数是使用与音频对象相关联的对象音频信号生成的。 对象参数具有指示对象音频信号的能量的能量参数。 为了得出一致性和等级参数，使用参数生成器，其结合能量参数和对象渲染参数，其依赖于所需的呈现配置。
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公开(公告)号：US08793125B2
公开(公告)日：2014-07-29
申请号：US11571838
申请日：2005-07-11
CPC分类号： H04S5/005 , G10L19/008
摘要： A device (1) for converting a first number (M) of input audio channels into a second, larger number (N) of output audio channels comprises: decorrelation units (3) for decomposing the input audio channels into a set of decorrelated auxiliary channels, at least one upmix unit (4) for combining the decorrelated auxiliary channels into the output audio channels, and at least one pre-processing unit (2) for pre-processing the input audio channels and feeding the pre-processed input audio channels to the decorrelation units (3). The pre-processing unit (2) and the upmix unit (4) are preferably controlled by audio parameters.
摘要翻译： 用于将输入音频通道的第一数量（M）转换为第二，更大数量（N）的输出音频通道的设备（1）包括：用于将输入音频通道分解为一组去相关的辅助通道的解相关单元（3） 至少一个用于将解相关辅助通道组合成输出音频通道的上混单元（4），以及至少一个预处理单元（2），用于预处理输入音频通道并将预处理的输入音频通道馈送到 去相关单位（3）。 预处理单元（2）和上混单元（4）优选地由音频参数控制。
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10.发明授权公开(公告)号：US08150042B2
公开(公告)日：2012-04-03
申请号：US11571840
申请日：2005-07-07
申请人： Machiel Willem Van Loon , Dirk Jeroen Breebaart , Gerard Herman Hotho , Erik Gosuinus Petrus Schuijers , Heiko Purnhagen , Karl Jonas Roden
发明人： Machiel Willem Van Loon , Dirk Jeroen Breebaart , Gerard Herman Hotho , Erik Gosuinus Petrus Schuijers , Heiko Purnhagen , Karl Jonas Roden
IPC分类号： H04R5/00
CPC分类号： H04S3/02 , G10L19/008 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： Techniques are described for combining parametric multi-channel audio coding with matrixing, reconstructing a full-quality multi-channel, independent of the decoder. A stereo signal is obtained from encoding an N-channel audio signal into spatial parameters and a stereo down-mix signal having first and second stereo signals, including adding a first signal and a third signal to obtain a first output signal, the first signal having the first stereo signal modified by a first complex function, the third signal having the second stereo signal modified by a third complex function. A second signal and fourth signal are similarly added to obtain a second output signal. Complex functions are chosen such that an energy value of the difference between first signal and the second signals (fourth signal and third signals) is larger than or equal to the energy value of the sum of the first and the second signal (fourth signal and third signal).
摘要翻译： 描述了将参数化多通道音频编码与矩阵相结合的技术，重建了独立于解码器的全质量多通道。 通过将N声道音频信号编码为空间参数和具有第一和第二立体声信号的立体声缩混信号获得立体声信号，包括添加第一信号和第三信号以获得第一输出信号，所述第一信号具有 由第一复合函数修改的第一立体声信号，具有由第三复合函数修改的第二立体声信号的第三信号。 类似地添加第二信号和第四信号以获得第二输出信号。 选择复数函数，使得第一信号和第二信号（第四信号和第三信号）之间的差的能量值大于或等于第一和第二信号之和的能量值（第四信号和第三信号 信号）。
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