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1. 发明授权

EP1866913B1 AUDIO ENCODING AND DECODING 有权转让
标题翻译：音频编码和解码音频
公开(公告)号：EP1866913B1
公开(公告)日：2008-08-27
申请号：EP06727674.1
申请日：2006-03-16
申请人： Koninklijke Philips Electronics N.V.
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

2. 发明公开

EP1866912A1 MULTI-CHANNEL AUDIO CODING 有权转让
标题翻译：多声道音频CODING
公开(公告)号：EP1866912A1
公开(公告)日：2007-12-19
申请号：EP06711112.0
申请日：2006-03-16
申请人： Koninklijke Philips Electronics N.V. , Coding Technologies Sweden AB
发明人： HOTHO, Gerard, H. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , DEN BRINKER, Albertus, C. , VILLEMOES, Lars, F. , PURNHAGEN, Heiko , RÖDEN, 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).

3. 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。

4. 发明公开

EP1735777A1 MULTI-CHANNEL ENCODER 审中-公开
标题翻译： MEHRKANAL-CODIERER
公开(公告)号：EP1735777A1
公开(公告)日：2006-12-27
申请号：EP05718571.2
申请日：2005-03-25
申请人： Koninklijke Philips Electronics N.V.
发明人： HOTHO, Gerard, H. , BREEBAART, Dirk, J. , VERBITSKIY, Evgeny, A. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/02 , H04S1/00 , H04S3/00
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（CH1至CH3; 400至450）进行编码的方法，以生成相应的输出数据，包括下混合输出信号（610,620）以及互补参数数据（600）。该方法包括将输入信号（CH1至GH3; 400至450）下变频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（CH1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（CH1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合输出信号（610,620）的随后解码期间可用的信息和参数数据（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（CH1至CH3; 400至450）的表示。还阐明了用于在编码器（5; 15）中进行基本信号处理操作的编码器。

5. 发明公开

EP1665232A1 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：EP1665232A1
公开(公告)日：2006-06-07
申请号：EP04769853.5
申请日：2004-08-26
申请人： Koninklijke Philips Electronics N.V.
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：在正弦曲线音频编码器中，每个音频段估计大量正弦曲线。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。

6. 发明公开

EP1522063A1 SINUSOIDAL AUDIO CODING 有权
标题翻译：正弦音频编码
公开(公告)号：EP1522063A1
公开(公告)日：2005-04-13
申请号：EP03735915.5
申请日：2003-06-18
申请人： Koninklijke Philips Electronics N.V.
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）包括为多个连续段中的每一个提供相应的一组采样信号值。对采样的信号值进行分析（130）以针对多个连续段中的每一个生成一个或多个正弦分量。正弦分量跨多个连续的段连接。正弦码（CS）包括多个连续段中的每一个的链接正弦分量的轨迹。每个轨道包括用于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所述起始段不包括相位的指示符。

7. 发明公开

EP1866913A1 AUDIO ENCODING AND DECODING 有权转让
标题翻译：音频编码和解码音频
公开(公告)号：EP1866913A1
公开(公告)日：2007-12-19
申请号：EP06727674.1
申请日：2006-03-16
申请人： Koninklijke Philips Electronics N.V.
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.

8. 发明授权

EP1522063B1 SINUSOIDAL AUDIO CODING 有权
标题翻译：正弦声音编码
公开(公告)号：EP1522063B1
公开(公告)日：2007-03-07
申请号：EP03735915.5
申请日：2003-06-18
申请人： Koninklijke Philips Electronics N.V.
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.

9. 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.

10. 发明授权

EP1902443B1 AUDIO ENCODING AND DECODING 有权转让
标题翻译：音频编码和解码音频
公开(公告)号：EP1902443B1
公开(公告)日：2009-06-03
申请号：EP06766049.8
申请日：2006-07-07
申请人： Koninklijke Philips Electronics N.V. , Dolby Sweden AB
发明人： SCHUIJERS, Erik, G., P. , HOTHO, Gerard, H. , PURNHAGEN, Heiko , SCHILDBACH, Wolfgang, A. , HOERICH, Holger , KJOERLING, Hans , M., , RÖDÉN, Karl,J.
IPC分类号： G10L19/00 , H04S3/00
CPC分类号： G10L19/008 , H04S2420/03
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.

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