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1. 发明申请

WO2006103581A1 SCALABLE MULTI-CHANNEL AUDIO CODING 审中-公开
标题翻译：可扩展多通道音频编码
公开(公告)号：WO2006103581A1
公开(公告)日：2006-10-05
申请号：PCT/IB2006/050819
申请日：2006-03-16
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MYBURG, Francois, P. , SCHUIJERS, Erik, G., P.
发明人： MYBURG, Francois, P. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/00
CPC分类号： G10L19/24 , G10L19/008
摘要： An audio encoder adapted to encode a multi-channel audio signal, the encoder comprising an encoder combination module (ECM) for generating a dominant signal part (m) and a residual signal part (s) being a combined representation of first and second audio signals (xl, x2), the dominant and residual signal parts (m, s) being obtained by applying a mathematical procedure to the first and second audio signals (xl, x2), wherein the mathematical procedure involves a first spatial parameter (SPl) comprising a description of spatial properties of the first and second audio signals (xl, x2), a parameter generator (PG) for generating a first parameter (PSl) set comprising a second spatial parameter (SP2), and a second parameter (PS2) set comprising a third spatial parameter (SP3), and an output generator for generating an encoded output signal comprising a first output part (OPl) comprising the dominant signal part (m) and the first parameter set (PSl), and a second output part (OP2) comprising the residual signal part (s) and the second parameter set (PS2). In preferred embodiments the mathematical procedure includes a two-dimensional signal rotation, and the third spatial parameter (SP3) comprises a difference between the second spatial parameter (SP2) and the first spatial parameter (SPl). Preferred embodiments include a plurality of interconnected encoder combination module, so that e.g. six independent 5.1 format audio signals can be encoded to a single or two dominant signal parts and a number of parameter sets and residual signal parts. In an output bit stream the first output part is included in a base layer, while the second output part is included in a refinement layer. A transparent audio signal quality can be obtained by a decoder utilizing both layers, while an acceptable quality can be obtained by a decoder using only the base layer data. Thus, a scalable spatial audio coding has been provided.
摘要翻译：一种适于编码多声道音频信号的音频编码器，所述编码器包括用于产生主要信号部分（m）的编码器组合模块（ECM）和作为第一和第二音频信号的组合表示的残余信号部分（x1，x2），通过将数学过程应用于第一和第二音频信号（x1，x2）获得的主要和残余信号部分（m，s），其中数学过程涉及第一空间参数（SP1），其包括描述第一和第二音频信号（x1，x2）的空间属性，用于生成包括第二空间参数（SP2）的第一参数（PS1）集合的参数生成器（PG）和第二参数（PS2）集合包括第三空间参数（SP3）和输出发生器，用于产生编码的输出信号，该输出信号包括包括主要信号部分（m）和第一参数组（PS1）的第一输出部分（OP1）和第二输出部分 OP2）包括剩余信号部分和第二参数集（PS2）。在优选实施例中，数学过程包括二维信号旋转，并且第三空间参数（SP3）包括第二空间参数（SP2）和第一空间参数（SP1）之间的差。优选实施例包括多个互连的编码器组合模块，六个独立的5.1格式音频信号可以编码为一个或两个主要信号部分和多个参数集和残余信号部分。在输出比特流中，第一输出部分被包括在基本层中，而第二输出部分被包括在细化层中。可以通过使用两层的解码器来获得透明音频信号质量，而只有基本层数据的解码器可以获得可接受的质量。因此，提供了可扩展的空间音频编码。

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

WO2006048815A1 ENCODING AND DECODING A SET OF SIGNALS 审中-公开
标题翻译：编码和解码一组信号
公开(公告)号：WO2006048815A1
公开(公告)日：2006-05-11
申请号：PCT/IB2005/053548
申请日：2005-10-31
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , MYBURG, Francois, P. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P.
发明人： MYBURG, Francois, P. , BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/00
CPC分类号： G10L19/008
摘要： An encoding device (1) and method convert a set of signals (1, r) into a dominant signal (m) containing most signal energy, a residual signal (s) containing a remainder of the signal energy, and signal parameters (IID, ICC) associated with the conversion. The dominant signal (m) and selected parts of the residual signal (s) are encoded. Selecting parts of the residual signal involves a residual signal (s') passing perceptually relevant parts of the residual signal (s), attenuating perceptually less relevant parts of the residual signal and suppressing least relevant parts of the residual signal. An associated decoding device (2) and method decode the encoded dominant signal and the encoded residual signal so as to produce a decoded dominant signal (m' u ) and a decoded residual signal (s ' mod ) respectively. A synthetic residual signal (s' Syn ) is derived from the decoded dominant signal (m' u ) and is attenuated so as to produce an attenuated synthetic residual signal ( S’ Syn,mod). The attenuated synthetic residual signal (S ' Syn, mod ) and the decoded residual signal ( S’ mod) are combined to produce a reconstructed residual signal (s'). The decoded dominant signal (m') and the reconstructed residual signal (s') are then converted into a set of output signals (l', r').
摘要翻译：一种编码装置（1）和方法，将一组信号（1，r）转换成包含大多数信号能量的显性信号（m），包含信号能量余数的残余信号和信号参数（IID， ICC）与转换相关联。对主要信号（m）和剩余信号的选定部分进行编码。选择残余信号的部分包括通过残留信号的感知相关部分的残差信号（s'），衰减感知上较少的残余信号的相关部分并抑制残留信号的最小相关部分。相关联的解码装置（2）和方法对编码的主导信号和编码的残差信号进行解码，以便产生解码的主导信号（m'U>）和解码的残余信号（s' 模）_{分别。从解码的主导信号（m'）导出合成残差信号（s'S S ut），并且被衰减，以产生衰减的合成残差信号（ S'_{SYN，MOD）。衰减的合成残差信号（S / S）}}

4. 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。

5. 发明申请

WO2005098825A1 STEREO CODING AND DECODING METHODS AND APPARATUSES THEREOF 审中-公开
标题翻译：立体声编码和解码方法及其设备
公开(公告)号：WO2005098825A1
公开(公告)日：2005-10-20
申请号：PCT/IB2005/051058
申请日：2005-03-29
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J. , MYBURG, Francois, P. , VAN DE KERKHOF, Leon, M.
发明人： SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J. , MYBURG, Francois, P. , VAN DE KERKHOF, Leon, M.
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , G10L19/008 , H04S3/008 , H04S2420/03
摘要： A method of encoding input signals (1, r) to generate encoded data (100) is provided. The method involves processing the input signals (1, r) to determine first parameters (φ 1 ,φ 2 ) describing relative phase difference and temporal difference between the signals (1, r), and applying these first parameters (φ 1 , φ 2 ) to process the input signals to generate intermediate signals. The method involves processing the intermediate signals to determine second parameters (α; IID, ρ) describing angular rotation of the first intermediate signals to generate a dominant signal (m) and a residual signal (s), the dominant signal (m) having a magnitude or energy greater than that of the residual signal (s). These second parameters are applicable to process the intermediate signals to generate the dominant (m) and residual (s) signals. The method also involves quantizing the first parameters, the second parameters, and dominant and residual signals (m, s) to generate corresponding quantized data for subsequent multiplexing to generate the encoded data (100).
摘要翻译：提供了编码输入信号（1，r）以生成编码数据（100）的方法。该方法包括处理输入信号（1，r）以确定描述信号（1，r）之间的相对相位差和时间差的第一参数（phi1，phi2），并应用这些第一参数（phi1，phi2）来处理输入信号产生中间信号。所述方法包括处理中间信号以确定描述第一中间信号的角旋转以产生主要信号（m）和残余信号的第二参数（α，II），所述主信号（m）具有大小或能量大于残余信号的幅度或能量。这些第二参数适用于处理中间信号以产生主（m）和残留信号。该方法还包括量化第一参数，第二参数以及显性和残留信号（m，s）以产生对应的量化数据用于随后的多路复用以产生编码数据（100）。

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