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1. 发明授权

EP1735774B1 MULTI-CHANNEL ENCODER 有权转让
标题翻译：多信道编码器
公开(公告)号：EP1735774B1
公开(公告)日：2008-05-14
申请号：EP05718568.8
申请日：2005-03-25
申请人： Koninklijke Philips Electronics N.V.
发明人： BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , VAN LOON, Machiel, W.
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： There is described a multi-channel encoder (10; 600) for processing input signals conveyed in N input channels to generate corresponding output signals conveyed in M output channels together with complementary parametric data; M and N are integers wherein N>M. The encoder (10; 600) includes a down-mixer for down-mixing the input signals to generate the corresponding output signals, the encoder also comprising an analyser for processing the input signals to generate the parameter data, said parametric data describing mutual differences between the N channels of input signal to allow for regenerating during decoding one or more of the N channels of input signals from the M channels of output signal. Such an encoder (10; 600) is capable of providing highly efficient data encoding and also of being backwards compatibility with relatively simpler decoders having fewer than N decoding output channels. The invention also concerns decoders (800) compatible with such a multi-channel encoder (10; 600).

2. 发明授权

EP1769655B1 METHOD, DEVICE, ENCODER APPARATUS, DECODER APPARATUS AND AUDIO SYSTEM 有权转让
标题翻译：方法，装置，编码器装置，解码器装置和音频系统
公开(公告)号：EP1769655B1
公开(公告)日：2011-09-28
申请号：EP05761091.7
申请日：2005-07-07
申请人： Koninklijke Philips Electronics N.V. , Dolby Sweden AB
发明人： VAN LOON, Machiel, W. , BREEBAART, Dirk, J. , HOTHO, Gerard, H. , SCHUIJERS, Erik, G., P. , PURNHAGEN, Heiko , RÖDÉN, Karl, J.
IPC分类号： H04S3/02
CPC分类号： H04S3/02 , G10L19/008 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： A method and a device for processing a stereo signal obtained from an encoder, which codes an N-channel audio signal into spatial parameters (P) and a stereo down-mix comprising first and second stereo signals (L 0 , R 0 ). A first signal and a third signal are added in order to obtain a first output signal (L 0w ), wherein the first signal QL 0wL ) comprises the first stereo signal (L 0 ) modified by a first complex function (g 1 ), and the third signal (L 0wR ) comprises the second stereo signal (R 0 ) modified by a third complex function (g 3 ). A second signal and a fourth signal are added to obtain a second output signal (R 0w ). The fourth signal (R 0wR ) comprises the second stereo signal (R 0 ) modified by a fourth complex function (g 4 ), and the second signal (R 0wL ) comprises the first stereo signal (L 0 ) modified by a second complex function (g 2 ). The complex functions (g 1 ,g 2 ,g 3 ,g 4 ) are functions of the spatial parameters (P) and are chosen such that an energy value of the difference (L 0wL -P 0wL ) between the first signal and the second signal is larger than or equal to the energy value of the sum (L 0wL +R 0wL ) of the first and the second signal and the energy value of the difference (R 0wR -L 0wR ) between the fourth signal and the third signal is larger than or equal to the energy value of the sum (R 0wR +L 0wR ) of the fourth signal and the third signal.
摘要翻译：描述了用于处理从编码器获得的立体声信号的方法和设备，该编码器将N声道音频信号编码为包括第一和第二立体声信号（Lo，R0）的空间参数（P）和立体声下混合。添加第一信号和第三信号以获得第一输出信号（低），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），并且第三信号（L0wR）包括由第三复函数（g3）修改的第二立体声信号（R0）。第二信号和第四信号被相加以获得第二输出信号（R0w）。第四信号（R0wR）包括由第四复合函数（g4）修改的第二立体声信号（R0），并且第二信号（R0wL）包括由第二复合函数（g2）修改的第一立体声信号（L0）。复数函数（g1，g2，g3，g4）是空间参数（P）的函数并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信号与第二信号的总和（LowL + R0wL）的能量值，并且第四信号与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总和（R0wR + L0wR）的值。

3. 发明公开

EP1792520A1 AUDIO SIGNAL ENHANCEMENT 审中-公开
标题翻译：音频信号增强
公开(公告)号：EP1792520A1
公开(公告)日：2007-06-06
申请号：EP05777216.2
申请日：2005-08-30
申请人： Koninklijke Philips Electronics N.V.
发明人： VAN LOON, Machiel, W. , BREEBAART, Dirk, J.
IPC分类号： H04S1/00
CPC分类号： G10L19/26 , G10L19/008 , G10L21/00 , H04S1/002 , H04S2420/03
摘要： A device (10) for enhancing a multi-channel (e.g. stereo) audio signal has a parameter adjustment unit (13) for adjusting an original parameter (α, ILD, ICC) which represents an original inter-channel property of the audio signal. The device further comprises a processing unit (11) for processing the audio signal so as to produce an enhanced audio signal having the adjusted parameter (α′, ILD′, ICC′). The device allows stereo widening or other multi-channel signal enhancements without introducing artifacts.

4. 发明公开

EP1735774A2 MULTI-CHANNEL ENCODER 有权转让
标题翻译：多信道编码器
公开(公告)号：EP1735774A2
公开(公告)日：2006-12-27
申请号：EP05718568.8
申请日：2005-03-25
申请人： Koninklijke Philips Electronics N.V.
发明人： BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , VAN LOON, Machiel, W.
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： There is described a multi-channel encoder (10) for processing input signals (300, 310, 320, 330, 340) conveyed in N input channels to generate corresponding output signals (480, 490) conveyed in M output channels together with complementary parametric data (370, 430, 450); M and N are integers wherein N>M. The encoder (10) includes a down-mixer for down-mixing the input signals (30, 310, 320, 330, 340) to generate the corresponding output signals (480, 490), the encoder also comprising an analyser for processing the input signals (300, 310, 320, 330, 340) to generate the parameter data (370, 430, 450), said parametric data describing mutual differences between the N channels of input signal to allow for regenerating during decoding one or more of the N channels of input signals from the M channels of output signal. Such an encoder (10) is capable of providing highly efficient data encoding and also of being backwards compatibility with relatively simpler decoders having fewer than N decoding output channels. The invention also concerns decoders compatible with such a multi-channel.

5. 发明授权

EP1735779B1 ENCODER APPARATUS, DECODER APPARATUS, METHODS THEREOF AND ASSOCIATED AUDIO SYSTEM 有权转让
标题翻译：编码器，解码器，程序和相关音频系统
公开(公告)号：EP1735779B1
公开(公告)日：2013-06-19
申请号：EP05718592.8
申请日：2005-03-30
申请人： Koninklijke Philips Electronics N.V.
发明人： VAN LOON, Machiel, W. , HOTHO, Gerard, H. , BREEBAART, Dirk, J.
IPC分类号： G10L19/02 , H04R5/04 , H04S1/00 , H04S3/00
CPC分类号： H04S3/008 , G10L19/008 , H04S3/02 , H04S2420/03

6. 发明公开

EP1769655A1 METHOD, DEVICE, ENCODER APPARATUS, DECODER APPARATUS AND AUDIO SYSTEM 有权转让
标题翻译：方法，设备，编码器，解码器和音频系统
公开(公告)号：EP1769655A1
公开(公告)日：2007-04-04
申请号：EP05761091.7
申请日：2005-07-07
申请人： Koninklijke Philips Electronics N.V. , Coding Technologies AB
发明人： VAN LOON, Machiel, W. , BREEBAART, Dirk, J. , HOTHO, Gerard, H. , SCHUIJERS, Erik, G., P. , PURNHAGEN, Heiko , RÖD N, Karl, J.
IPC分类号： H04S3/02
CPC分类号： H04S3/02 , G10L19/008 , H04S1/007 , H04S2400/03 , H04S2420/03
摘要： A method and a device for processing a stereo signal obtained from an encoder, which codes an N-channel audio signal into spatial parameters (P) and a stereo down-mix comprising first and second stereo signals (L 0 , R 0 ). A first signal and a third signal are added in order to obtain a first output signal (L 0w ), wherein the first signal QL 0wL ) comprises the first stereo signal (L 0 ) modified by a first complex function (g 1 ), and the third signal (L 0wR ) comprises the second stereo signal (R 0 ) modified by a third complex function (g 3 ). A second signal and a fourth signal are added to obtain a second output signal (R 0w ). The fourth signal (R 0wR ) comprises the second stereo signal (R 0 ) modified by a fourth complex function (g 4 ), and the second signal (R 0wL ) comprises the first stereo signal (L 0 ) modified by a second complex function (g 2 ). The complex functions (g 1 ,g 2 ,g 3 ,g 4 ) are functions of the spatial parameters (P) and are chosen such that an energy value of the difference (L 0wL -P 0wL ) between the first signal and the second signal is larger than or equal to the energy value of the sum (L 0wL +R 0wL ) of the first and the second signal and the energy value of the difference (R 0wR -L 0wR ) between the fourth signal and the third signal is larger than or equal to the energy value of the sum (R 0wR +L 0wR ) of the fourth signal and the third signal.

7. 发明公开

EP1735779A1 METHOD, DEVICE, ENCODER APPARATUS, DECODER APPARATUS AND AUDIO SYSTEM 有权转让
标题翻译：代理人，DECODIERER，DEREN VERFAHREN UNDDAZUGEHÖRIGESAUDIOSYSTEM
公开(公告)号：EP1735779A1
公开(公告)日：2006-12-27
申请号：EP05718592.8
申请日：2005-03-30
申请人： Koninklijke Philips Electronics N.V.
发明人： VAN LOON, Machiel, W. , HOTHO, Gerard, H. , BREEBAART, Dirk, J.
IPC分类号： G10L19/02 , H04R5/04 , H04S1/00 , H04S3/00
CPC分类号： H04S3/008 , G10L19/008 , H04S3/02 , H04S2420/03
摘要： Method for processing a stereo signal comprising: Encoding à 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 can be discribed as the matrix of the stereo signal, multiplied by a filter matrix (H) which element 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.
摘要翻译：用于处理立体声信号的方法，包括：以立体声信号（Lo，Ro）和空间参数（wl，wr）编码N声道音频信号，使用用于产生经处理的立体声信号的空间参数来处理立体声信号（低，行）。经处理的立体声信号的矩阵可以被描述为立体声信号的矩阵，乘以滤波器矩阵（H），该滤波器矩阵（H）是以空间参数（W1）操作的滤波器函数（H 1，H 2，H 3，H 4），wr）和常数（a）。滤波器函数是时间不变的并被选择，使得矩阵是可逆的。

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