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1. 发明申请

WO2006103586A1 AUDIO ENCODING AND DECODING 审中-公开
标题翻译：音频编码和解码
公开(公告)号：WO2006103586A1
公开(公告)日：2006-10-05
申请号：PCT/IB2006/050826
申请日：2006-03-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HOTHO, Gerard, H. , MYBURG, Francois, P. , OOMEN, Arnoldus, W., J.
发明人： HOTHO, Gerard, H. , MYBURG, Francois, P. , OOMEN, Arnoldus, W., J.
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： A multi-channel audio encoder (10) encodes an N-channel audio signal. A first unit (110) generates a first encoded M-channel signal, e.g. a spatial stereo down-mix, for the N-channel signal (N>M). Down-mixers(l 15, 116, 117) generate first enhancement data for the signal relative to the N-channel audio signal. A second M-channel signal, such as an artistic stereo mix, is generated for the N-channel signal. A processor (123) then generates second enhancement data for the second M-channel signal relative to the first M-channel signal. A second unit (120) generates an output signal comprising the second M-channel signal, the first enhancement data and the second enhancement data. The generator (123) can dynamically select between generating the second enhancement data as absolute enhancement data or as relative enhancement data relative to the second encoded M-channel signal. A decoder (20) can perform the inverse operation and can apply the second enhancement data as absolute or relative enhancement depending on an indication in the received bit-stream.
摘要翻译：多声道音频编码器（10）对N声道音频信号进行编码。第一单元（110）产生第一编码M信道信号，例如，用于N信道信号（N> M）的空间立体声缩减混音。下混频器（15,116,117）产生相对于N声道音频信号的信号的第一增强数据。为N信道信号生成第二M信道信号，如艺术立体声混合。然后，处理器（123）相对于第一M信道信号产生用于第二M信道信号的第二增强数据。第二单元（120）产生包括第二M信道信号，第一增强数据和第二增强数据的输出信号。生成器（123）可以在生成第二增强数据作为绝对增强数据或相对于第二编码M信道信号的相对增强数据之间动态选择。解码器（20）可以执行反向操作，并且可以根据接收到的比特流中的指示将第二增强数据应用为绝对或相对增强。

2. 发明申请

WO2006048817A1 ENCODING AND DECODING OF MULTI-CHANNEL AUDIO SIGNALS 审中-公开
标题翻译：多通道音频信号的编码和解码
公开(公告)号：WO2006048817A1
公开(公告)日：2006-05-11
申请号：PCT/IB2005/053550
申请日：2005-10-31
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HOTHO, Gerard, H. , MYBURG, Francois, P. , BREEBAART, Dirk, J.
发明人： HOTHO, Gerard, H. , MYBURG, Francois, P. , BREEBAART, Dirk, J.
IPC分类号： G10L19/00 , H04B1/66
CPC分类号： G10L19/008 , G10L21/028
摘要： An encoding device (1) for converting a first number (M) of input audio channels into a second, smaller number (N) of output audio channels comprises at least one conversion unit (12) for converting a first signal (Lf; Rf; Co) and a second signal (Lr; Rr; Le) into a third signal (L; R; C) and a fourth signal (Ls; Rs; Cs). The third, dominant signal contains most of the signal energy of the first and second signals, while the fourth, residual signal contains the remainder of said signal energy. The encoding device is arranged for using the third signal (L; R; C) to produce an output signal and for outputting the fourth signal (Ls; Rs; Cs). A decoding device (2) for converting a first number (N) of input audio channels into a second, larger number (M) of output audio channels comprises at least one conversion unit (24) for converting a first signal (L; R; C) and a second signal (Ld; Rd; Ld) into a third signal (Lf, Rf; Co) and a fourth signal (Lr; Rr; Le). The first, dominant signal contains most of the signal energy of the third and fourth signal, while the second, residual signal contains the remainder of said signal energy. The encoding device is arranged for receiving at least one-second signal (Ld; Rd; Cd).
摘要翻译：用于将输入音频通道的第一数量（M）转换为第二较小数量（N）个输出音频通道的编码设备（1）包括用于将第一信号（Lf; Rf; Co）和第二信号（Lr; Rr; Le）转换成第三信号（L; R; C）和第四信号（Ls; Rs; Cs）。第三个主要信号包含第一和第二信号的大部分信号能量，而第四个残差信号包含所述信号能量的剩余部分。编码装置被配置为使用第三信号（L; R; C）产生输出信号并输出第四信号（Ls; Rs; Cs）。用于将第一数量（N）个输入音频通道转换为第二较大数量（M）的输出音频通道的解码装置（2）包括至少一个转换单元（24），用于将第一信号（L; R; C）和第二信号（Ld; Rd; Ld）转换成第三信号（Lf，Rf; Co）和第四信号（Lr; Rr; Le）。第一个主要信号包含第三和第四信号的大部分信号能量，而第二个残差信号包含所述信号能量的剩余部分。编码装置被布置成用于接收至少一秒信号（Ld; Rd; Cd）。

3. 发明申请

WO2005024783A1 LOW BIT-RATE AUDIO ENCODING 审中-公开
标题翻译：低位速率音频编码
公开(公告)号：WO2005024783A1
公开(公告)日：2005-03-17
申请号：PCT/IB2004/051564
申请日：2004-08-26
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HOTHO, Gerard, H. , GERRITS, Andreas, J.
发明人： HOTHO, Gerard, H. , GERRITS, Andreas, J.
IPC分类号： G10L19/08
CPC分类号： G10L19/093
摘要： In a sinusoidal audio encoder a number of sinusoids are estimated per audio segment. A sinusoid is represented by frequency, amplitude and phase. The invention uses a track dependent quantization of phase. A track is encoded with a suitable initial (e.g. frequency dependent) quantization grid that is chosen among a set of possible initial grids that may vary from fine to coarse. If, in a series of time segments the frequency variation in a particular track is smaller than a predetermined value, the track is quantized using a finer quantization grid. The invention gives a significant improvement in decoded signal quality, especially for low bit-rate quantizers.
摘要翻译：在一个正弦音频编码器中，每个音频段估计一些正弦曲线。正弦曲线由频率，幅度和相位表示。本发明使用相位的跟踪相关量化。轨道用在可能从细到粗变化的一组可能的初始网格中选择的合适的初始（例如频率相关）量化网格进行编码。如果在一系列时间段中特定轨道的频率变化小于预定值，则使用更精细的量化网格对轨道进行量化。本发明在解码信号质量方面提供了显着的改进，特别是对于低比特率量化器。

4. 发明申请

WO2004006225A1 SINUSOIDAL AUDIO CODING 审中-公开
标题翻译： SINUSOIDAL音频编码
公开(公告)号：WO2004006225A1
公开(公告)日：2004-01-15
申请号：PCT/IB2003/002746
申请日：2003-06-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
发明人： SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/02
CPC分类号： G10L19/093
摘要： Coding (1) an audio signal (x) comprises providing a respective set of sampled signal values for each of a plurality of sequential segments. The sampled signal values are analysed (130) to generate one or more sinusoidal components for each of the plurality of sequential segments. The sinusoidal components are linked across a plurality of sequential segments. Sinusoidal codes (CS) comprise tracks of linked sinusoidal components for each of the plurality of sequential segments. Each track comprises a frequency and amplitude for a sinusoidal component in a starting segment of a track whereas selected tracks include an indicator that no phase is included for said starting segment.
摘要翻译：编码（1）音频信号（x）包括为多个连续片段中的每一个提供相应的一组采样信号值。分析采样信号值（130）以为多个连续段中的每一个生成一个或多个正弦分量。正弦分量连接在多个连续片段上。正弦码（CS）包括用于多个连续片段中的每一个的链接的正弦分量的轨道。每个轨道包括轨道的起始段中的正弦分量的频率和幅度，而所选择的轨道包括用于所述起始段不包括相位的指示符。

5. 发明申请

WO2005098821A2 MULTI-CHANNEL ENCODER 审中-公开
标题翻译：多通道编码器
公开(公告)号：WO2005098821A2
公开(公告)日：2005-10-20
申请号：PCT/IB2005/051037
申请日：2005-03-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , VAN LOON, Machiel, W.
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).
摘要翻译：描述了用于处理在N个输入通道中传送的输入信号的多通道编码器（10; 600），以产生在M个输出通道中传送的相应输出信号以及互补参数数据; M和N是其中N> M的整数。编码器（10; 600）包括下混合器，用于对输入信号进行下混频以产生对应的输出信号，编码器还包括用于处理输入信号以生成参数数据的分析器，所述参数数据描述了输入信号的N个通道，用于在解码来自M个输出信号的N个通道的N个通道的输入信号中进行再生。这样的编码器（10; 600）能够提供高效的数据编码，并且还具有与具有少于N个解码输出通道的相对简单的解码器的向后兼容性。本发明还涉及与这种多通道编码器（10; 600）兼容的解码器（800）。

6. 发明申请

WO2007007263A3 AUDIO ENCODING AND DECODING 审中-公开
公开(公告)号：WO2007007263A3
公开(公告)日：2007-01-18
申请号：PCT/IB2006/052309
申请日：2006-07-07
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , CODING TECHNOLOGIES AB , SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , PURNHAGEN, Heiko , SCHILDBACH, Wolfgang, A. , HORICH, Holger , KJORLING, Hans, M., K. , RÖDÉN, Karl, J.
发明人： SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , PURNHAGEN, Heiko , SCHILDBACH, Wolfgang, A. , HORICH, Holger , KJORLING, Hans, M., K. , RÖDÉN, Karl, J.
IPC分类号： G10L19/00 , H04S3/00
摘要： An audio encoder (109) has a hierarchical encoding structure and generates a data stream comprising one or more audio channels as well as parametric audio encoding data. The encoder (109) comprises an encoding structure processor (305) which inserts decoder tree structure data into the data stream. The decoder tree structure data comprises at least one data value indicative of a channel split characteristic for an audio channel at a hierarchical layer of the hierarchical decoder structure and may specifically specify the decoder tree structures to be applied by a decoder. A decoder (115) comprises a receiver (401) which receives the data stream and a decoder structure processor (405) for generating the hierarchical decoder structure in response to the decoder tree structure data. A decode processor (403) then generates output audio channels from the data stream using the hierarchical decoder structure.

7. 发明申请

WO2005098826A1 METHOD, DEVICE, ENCODER APPARATUS, DECODER APPARATUS AND AUDIO SYSTEM 审中-公开
标题翻译：方法，设备，编码器装置，解码器装置和音频系统
公开(公告)号：WO2005098826A1
公开(公告)日：2005-10-20
申请号：PCT/IB2005/051065
申请日：2005-03-30
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , VAN LOON, Machiel, W. , HOTHO, Gerard, H. , BREEBAART, Dirk, J.
发明人： VAN LOON, Machiel, W. , HOTHO, Gerard, H. , BREEBAART, Dirk, J.
IPC分类号： G10L19/02
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：在立体声信号（Lo，Ro）和空间参数（wl，wr）中编码N沟道音频信号，使用空间参数处理立体声信号，用于产生经处理的立体声信号（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）是使用空间参数（w1，wr）操作的滤波器函数（H1，H2，H3，H4）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。

8. 发明申请

WO2005098824A1 MULTI-CHANNEL ENCODER 审中-公开
标题翻译：多通道编码器
公开(公告)号：WO2005098824A1
公开(公告)日：2005-10-20
申请号：PCT/IB2005/051040
申请日：2005-03-25
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , HOTHO, Gerard, H. , BREEBAART, Dirk, J. , VERBITSKIY, Evgeny, A. , DEN BRINKER, Albertus, C.
发明人： HOTHO, Gerard, H. , BREEBAART, Dirk, J. , VERBITSKIY, Evgeny, A. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , G10L19/008 , G10L19/0204 , H04S3/008
摘要： There is described a method of encoding input signals (CHI to CH3; 400 to 450) in a multi-channel encoder (5; 15) to generate corresponding output data comprising down-mix output signals (610, 620) together with complementary parametric data (600). The method includes a first step of down-mixing input signals (CHI to CH3; 400 to 450) to generate the corresponding down-mix output signals (610, 620), and a second step of processing the input signals (CHI to CH3; 400 to 450) during down-mixing to generate said parametric data (600) complementary to the down-mix output signals (610, 620). Processing of the input signals (CHI to CH3; 400 to 450) involves including information in the down-mix signals (610, 620) which is useable during subsequent decoding of the down-mix output signals (610, 620) and the parametric data (600) to determine at least some parameter data and thereby enabling representations of the input signals (CHI to CH3; 400 to 450) to be subsequently regenerated. Coders for use in the encoder (5; 15) for performing essential signal processing operations therein are also elucidated.
摘要翻译：描述了在多通道编码器（5; 15）中对输入信号（CHI至CH3; 400至450）进行编码的方法，以生成包括下混合输出信号（610,620）的相应输出数据以及互补参数数据（600）。该方法包括将输入信号（CHI至CH3; 400至450）进行下混合以产生相应的下混合输出信号（610,620）的第一步骤，以及处理输入信号（CHI至CH3; 400至450），以产生与下混合输出信号（610,620）互补的所述参数数据（600）。输入信号（CHI至CH3; 400至450）的处理涉及将下变频信号（610,620）中的信息包括在下混频输出信号（610,620）和参数数据的后续解码期间可用的信息（600）以确定至少一些参数数据，从而使得能够随后再生所述输入信号（CHI至CH3; 400至450）的表示。还阐明了用于编码器（5; 15）中用于执行其中的基本信号处理操作的编码器。

9. 发明申请

WO2006103584A1 MULTI-CHANNEL AUDIO CODING 审中-公开
标题翻译：多声道音频编码
公开(公告)号：WO2006103584A1
公开(公告)日：2006-10-05
申请号：PCT/IB2006/050822
申请日：2006-03-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , CODING TECHNOLOGIES AB , HOTHO, Gerard, H. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , DEN BRINKER, Albertus, C. , VILLEMOES, Lars, F. , PURNHAGEN, Heiko , RÖDÉN, Karl, J.
发明人： HOTHO, Gerard, H. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , DEN BRINKER, Albertus, C. , VILLEMOES, Lars, F. , PURNHAGEN, Heiko , RÖDÉN, Karl, J.
IPC分类号： G10L19/00 , H04S3/00
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）从空间向下混合（102）产生能够使解码器从替代的下混合（103）重构空间缩混（202）的参数（105）。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）可以有效地处理其中接收替代的下混合（103）而不是常规的空间，下混合（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）。

10. 发明申请

WO2006008683A1 METHOD, DEVICE, ENCODER APPARATUS, DECODER APPARATUS AND AUDIO SYSTEM 审中-公开
标题翻译：方法，设备，编码器装置，解码器装置和音频系统
公开(公告)号：WO2006008683A1
公开(公告)日：2006-01-26
申请号：PCT/IB2005/052254
申请日：2005-07-07
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , CODING TECHNOLOGIES AB , VAN LOON, Machiel, W. , BREEBAART, Dirk, J. , HOTHO, Gerard, H. , SCHUIJERS, Erik, G., P. , PURNHAGEN, Heiko , RÖDÉN, Karl, J.
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 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 (L o , R 0 ). A first signal and a third signal are added in order to obtain a first output signal (L ow ), wherein the first signal (L 0wL ) comprises the first stereo signal (L o ) 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 to be such that an energy value of the difference (L 0WL -R 0wL ) between the first signal and the second signal is larger than or equal to the energy value of the sum (L owL +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（L

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