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1. 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。

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

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。

4. 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.

5. 发明申请

WO2006048203A1 METHODS FOR IMPROVED PERFORMANCE OF PREDICTION BASED MULTI-CHANNEL RECONSTRUCTION 审中-公开
标题翻译：改进基于预测的多通道重建性能的方法
公开(公告)号：WO2006048203A1
公开(公告)日：2006-05-11
申请号：PCT/EP2005/011586
申请日：2005-10-28
申请人： CODING TECHNOLOGIES AB , KONINKLIJKE PHILIPS ELECTRONICS N.V. , VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
发明人： VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/04 , H04S2420/03
摘要： For a multi-channel reconstruction of audio signals based on at least one base channel, an energy measure is used for compensating energy losses due to an predictive upmix. The energy measure can be applied in the encoder or the decoder. Furthermore, a decorrelated signal is added to output channels generated by an energy-loss introducing upmix procedure. The energy of the decorrelated signal is smaller than or equal to an energy error introduced by the predictive upmix. Thus, problems occurring for prediction based up-mix methods such as up-mixing signals that are coded with High Frequency Reconstruction techniques are solved, so that the correct correlation between the up-mixed channels is obtained or the up-mix is adapted to arbitrary down-mixes.
摘要翻译：对于基于至少一个基本信道的音频信号的多声道重建，能量测量被用于由于预测上混补偿能量损失。能量测量可以应用于编码器或解码器。此外，将去相关信号添加到通过能量损失引入上混程序产生的输出通道。解相关信号的能量小于或等于由预测上混引入的能量误差。因此，解决了用于基于预测的上混合方法（例如用高频重建技术编码的上混合信号）所出现的问题，从而获得上混合信道之间的正确相关性，或者将混合信号适配为任意的下混合。

6. 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。

7. 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。

8. 发明申请

WO2007042108A1 TEMPORAL AND SPATIAL SHAPING OF MULTI-CHANNEL AUDIO SIGNALS 审中-公开
标题翻译：多通道音频信号的时间和空间形状
公开(公告)号：WO2007042108A1
公开(公告)日：2007-04-19
申请号：PCT/EP2006/008534
申请日：2006-08-31
申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V. , KONINKLIJKE PHILIPS ELECTRONICS N.V. , DISCH, Sascha , HERRE, Jürgen , NEUSINGER, Matthias , BREEBAART, Jeroen , HOTHO, Gerard
发明人： DISCH, Sascha , HERRE, Jürgen , NEUSINGER, Matthias , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00 , H04S3/00
CPC分类号： G10L19/008 , H04S3/008
摘要： A selected channel of a multi-channel signal which is represented by frames composed from sampling values having a high time resolution 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 including a sequence of intermediate wave form parameters having a time resolution lower than the high time resolution of the sampling values and higher than a time resolution defined by a frame repetition rate. 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 that one of the 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：当表示所选频道的中间分辨率表示的波形的波形参数表示被导出时，由具有高时间分辨率的采样值组成的帧表示的多信道信号的选择信道可以被更高质量地编码波形参数表示，包括具有低于采样值的高时间分辨率的时间分辨率并且高于由帧重复率定义的时间分辨率的中间波形参数序列。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择的原始信道中的那一个的信号包络的信道。进行整形的时间标度比帧式处理的时间标度短，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。

9. 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。

10. 发明申请

WO2006048204A1 MULTI PARAMETRISATION BASED MULTI-CHANNEL RECONSTRUCTION 审中-公开
标题翻译：多参数多通道重构
公开(公告)号：WO2006048204A1
公开(公告)日：2006-05-11
申请号：PCT/EP2005/011587
申请日：2005-10-28
申请人： CODING TECHNOLOGIES AB , KONINKLIJKE PHILIPS ELECTRONICS N.V. , VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
发明人： VILLEMOES, Lars , KJÖRLING, Kristofer , PURNHAGEN, Heiko , RÖDEN, Jonas , BREEBAART, Jeroen , HOTHO, Gerard
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/04 , H04S2420/03
摘要： A Multi-channel synthesiser for generating at least three output channels (110, 111, 112) using an input signal having at least one base channel, the base channel being derived from the original multi-channel signal (101, 102, 103), the input signal further including at least two different up-mixing parameters, and an up-mixer mode indication (1005) indicating, in a first state that a first up-mixing rule is to be performed, and, indicating, in a second state, that a different second up-mixing rule is to be performed, uses an up-mixer for up-mixing the at least one base channel using the at least two different up-mixing parameters based on the first or the second up-mixing rule in response to the up-mixer mode indication (1005) so that the at least three output channels (110, 111, 112) are obtained.
摘要翻译：一种多通道合成器，用于使用具有至少一个基本通道的输入信号来产生至少三个输出通道（110,111,112），所述基本通道从原始多通道信号（101,102,103）导出，所述输入信号还包括至少两个不同的上混参数，以及上混合模式指示（1005），在第一状态下指示要执行第一加混规则，并且以第二状态要执行不同的第二上调规则，使用上混合器，用于使用基于第一或第二上混合规则的至少两个不同的上混参数来上混合至少一个基本信道响应于上混频器模式指示（1005），使得获得至少三个输出通道（110,111,112）。

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