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1. 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).

2. 发明公开

EP1769491A1 AUDIO CHANNEL CONVERSION 有权转让
标题翻译： TONKANALKONVERTIERUNG
公开(公告)号：EP1769491A1
公开(公告)日：2007-04-04
申请号：EP05765606.8
申请日：2005-07-11
申请人： Koninklijke Philips Electronics N.V. , Coding Technologies Sweden AB
发明人： BREEBAART, Dirk, J. , SCHUIJERS, Erik, G., P. , PURNHAGEN, Heiko , RÖDÉN, Karl, J.
IPC分类号： G10L19/00 , H04S5/00
CPC分类号： H04S5/005 , G10L19/008
摘要： A device (1) for converting a first number (M) of input audio channels into a second, larger number (N) of output audio channels comprises: decorrelation units (3) for decomposing the input audio channels into a set of decorrelated auxiliary channels, at least one upmix unit (4) for combining the decorrelated auxiliary channels into the output audio channels, and at least one pre-processing unit (2) for pre-processing the input audio channels and feeding the pre-processed input audio channels to the decorrelation units (3). The pre-processing unit (2) and the upmix unit (4) are preferably controlled by audio parameters.

3. 发明申请

WO2009141775A1 A PARAMETRIC STEREO UPMIX APPARATUS, A PARAMETRIC STEREO DECODER, A PARAMETRIC STEREO DOWNMIX APPARATUS, A PARAMETRIC STEREO ENCODER 审中-公开
标题翻译：参数立体声高清设备，参数立体声解码器，参数立体声下载设备，参数立体声编码器
公开(公告)号：WO2009141775A1
公开(公告)日：2009-11-26
申请号：PCT/IB2009/052009
申请日：2009-05-14
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SCHUIJERS, Erik, G., P.
发明人： SCHUIJERS, Erik, G., P.
IPC分类号： G10L19/00 , H04S3/02
CPC分类号： H04S5/00 , G10L19/008 , H04S3/02 , H04S2400/03 , H04S2420/03
摘要： A parametric stereo upmix apparatus (300, 400) generating a left signal (206) and a right signal (207) from a mono downmix signal (204) based on spatial parameters (205). Said parametric stereo upmix being characterized in that it comprises a means (310) for predicting a difference signal (311) comprising a difference between the left signal (206) and the right signal(207) based on the mono downmix signal (204) scaled with a prediction coefficient (321). Said prediction coefficient is derived from the spatial parameters (205). Said parametric stereo upmix apparatus (300, 400) further comprises an arithmetic means (330) for deriving the left signal (206) and the right signal (207) based on a sum and a difference of the mono downmix signal (204) and said difference signal (311).
摘要翻译：基于空间参数（205）从单声道下混信号（204）产生左信号（206）和右信号（207）的参数立体声上混装置（300,400）。所述参数立体声上混的特征在于，它包括一个装置（310），用于根据缩放的单声道下混信号（204）预测包括左信号（206）和右信号（207）之间的差的差信号（311）具有预测系数（321）。所述预测系数是从空间参数（205）导出的。所述参数立体声上混装置（300,400）还包括用于根据单声道下混合信号（204）和所述第二混音信号（204）的和和差值导出左信号（206）和右信号（207）的算术装置（330）差分信号（311）。

4. 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）}}

5. 发明申请

WO2005043511A1 AUDIO SIGNAL ENCODING OR DECODING 审中-公开
标题翻译：音频信号编码或解码
公开(公告)号：WO2005043511A1
公开(公告)日：2005-05-12
申请号：PCT/IB2004/052226
申请日：2004-10-28
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , CODING TECHNOLOGIES GMBH , VILLEMOES, Lars, F. , EKSTRAND, Per , PURNHAGEN, Heiko , SCHUIJERS, Erik, G., P. , DE BONT, Fransiscus M., J.
发明人： VILLEMOES, Lars, F. , EKSTRAND, Per , PURNHAGEN, Heiko , SCHUIJERS, Erik, G., P. , DE BONT, Fransiscus M., J.
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L21/038
摘要： Encoding an audio signal is provided wherein the audio signal includes a first audio channel and a second audio channel, the encoding comprising subband filtering each of the first audio channel and the second audio channel in a complex modulated filterbank to provide a first plurality of subband signals for the first audio channel and a second plurality of subband signals for the second audio channel, downsampling each of the subband signals to provide a first plurality of downsampled subband signals and a second plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, deriving spatial parameters from the sub-subband signals and from those downsampled subband signals that are not further subband filtered, and deriving a single channel audio signal comprising derived subband signals derived from the first plurality of downsampled subband signals and the second plurality of downsampled subband signals. Further, decoding is provided wherein an encoded audio signal comprising an encoded single channel audio signal and a set of spatial parameters is decoded by decoding the encoded single channel audio channel to obtain a plurality of downsampled subband signals, further subband filtering at least one of the downsampled subband signals in a further filterbank in order to provide a plurality of sub-subband signals, and deriving two audio channels from the spatial parameters, the sub-subband signals and those downsampled subband signals that are not further subband filtered.
摘要翻译：提供对音频信号的编码，其中音频信号包括第一音频通道和第二音频通道，该编码包括在复调制滤波器组中对第一音频通道和第二音频通道中的每一个进行子带滤波，以提供第一多个子带信号对于第一音频通道和用于第二音频通道的第二多个子带信号，对每个子带信号进行下采样以提供第一多个下采样子带信号和第二多个下采样子带信号，进一步子带滤波至少一个在另一个滤波器组中进行下采样的子带信号，以便提供多个子子带信号，从子子带信号和未进一步子带滤波的那些下采样子带信号导出空间参数，以及导出包括导出的从第一多个下采样子带信号导出的子带信号和第二多个下采样子带信号。此外，提供了解码，其中包括编码的单声道音频信号和一组空间参数的编码音频信号通过对编码的单声道音频声道进行解码以获得多个下采样的子带信号而被解码，进一步的子带滤波至少一个在另一滤波器组中进行下采样的子带信号，以便提供多个子子带信号，以及从空间参数，子子带信号和未进一步子带滤波的那些下采样子带信号导出两个音频信道。

6. 发明申请

WO2010122455A1 AUDIO SIGNAL SYNTHESIZING 审中-公开
标题翻译：音频信号合成
公开(公告)号：WO2010122455A1
公开(公告)日：2010-10-28
申请号：PCT/IB2010/051622
申请日：2010-04-14
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SCHUIJERS, Erik, G., P. , OOMEN, Arnoldus, W., J. , DE BONT, Fransiscus, M., J. , OSTROVSKYY, Mykola , RIJNBERG, Adriaan, J. , KOPPENS, Jeroen, G., H.
发明人： SCHUIJERS, Erik, G., P. , OOMEN, Arnoldus, W., J. , DE BONT, Fransiscus, M., J. , OSTROVSKYY, Mykola , RIJNBERG, Adriaan, J. , KOPPENS, Jeroen, G., H.
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , H04R5/033 , H04S2400/01 , H04S2420/01 , H04S2420/03
摘要： An audio synthesizing apparatus receives an encoded signal comprising a downmix signal and parametric extension data for expanding the downmix signal to a multi- sound source signal. A decomposition processor (205) performs a signal decomposition of the downmix signal to generate at least a first signal component and a second signal component,where the second signal component is at least partially decorrelated with the first signal component. A position processor (207) determines a first spatial position indication for the first signal component in response to the parametric extension data and a binaural processor (211) synthesizes the first signal component based on the first spatial position indication and the second signal component to originate from a different direction. The invention may provide improved spatial experience from e.g. headphones by using a direct synthesis of a main directional signal from the appropriate position rather than as a combination of signals from virtual loudspeaker positions.
摘要翻译：音频合成装置接收包含降混信号和参数扩展数据的编码信号，用于将下混信号扩展为多声源信号。分解处理器（205）执行降混信号的信号分解以产生至少第一信号分量和第二信号分量，其中第二信号分量与第一信号分量至少部分去相关。位置处理器（207）响应于参数扩展数据确定第一信号分量的第一空间位置指示，并且双耳处理器（211）基于第一空间位置指示和第二信号分量来合成第一信号分量以产生从不同的方向。本发明可以提供来自例如，通过使用来自适当位置的主要定向信号的直接合成而不是来自虚拟扬声器位置的信号的组合来使用耳机。

7. 发明申请

WO2010097748A1 PARAMETRIC STEREO ENCODING AND DECODING 审中-公开
标题翻译：参数STEREO编码和解码
公开(公告)号：WO2010097748A1
公开(公告)日：2010-09-02
申请号：PCT/IB2010/050763
申请日：2010-02-22
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , OOMEN, Arnoldus, W., J. , SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J.
发明人： OOMEN, Arnoldus, W., J. , SCHUIJERS, Erik, G., P. , BREEBAART, Dirk, J.
IPC分类号： G10L19/00 , H04S3/00
CPC分类号： H04S1/002 , G10L19/008 , H04S2420/03
摘要： A decoder comprises a receiver (601) which receives a parametrically encoded signal comprising a downmix of multiple channels, a set of upmix parameters including a phase parameter, and a phase correction parameter. The phase correction parameter is provided for second parts of the downmix but not for first parts of the downmix. An upmixer (603, 605) generates the multi-channel signal by upmixing the downmix based on the set of upmix parameters and a modifying unit (607) modify the upmixing in response to the phase correction parameter for the second parts of the downmix. The second parts may be associated with scenarios wherein at least two of the encoded multichannel signals are out of phase. The invention may provide improved audio quality for a reduced data rate.
摘要翻译：解码器包括接收器（601），其接收包括多个通道的下混合的参数编码信号，一组包括相位参数的上混参数和相位校正参数。相位校正参数为下混合的第二部分提供，而不是下混合的第一部分。上混合器（603,605）通过基于上混合参数集合上混合下混合来产生多声道信号，并且修改单元（607）响应于下混合的第二部分的相位校正参数修改上混合。第二部分可以与其中至少两个编码的多信道信号异相的情况相关联。本发明可以为降低的数据速率提供改进的音频质量。

8. 发明申请

WO2008096313A1 LOW COMPLEXITY PARAMETRIC STEREO DECODER 审中-公开
标题翻译：低复杂参数立体声解码器
公开(公告)号：WO2008096313A1
公开(公告)日：2008-08-14
申请号：PCT/IB2008/050401
申请日：2008-02-04
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SZCZERBA, Marek, Z. , SCHUIJERS, Erik, G., P. , DILLEN, Paulus, H., A.
发明人： SZCZERBA, Marek, Z. , SCHUIJERS, Erik, G., P. , DILLEN, Paulus, H., A.
IPC分类号： G10L19/00 , G10L19/08 , H04S1/00
CPC分类号： H04R5/04 , G10L19/008 , G10L19/093 , G10L19/16
摘要： A stereo audio decoder with low complexity is provided. A high stereo sound quality can be obtained with a limited computational power and is thus suitable for miniature and mobile equipment. The stereo decoder generates a set of stereo output channels (C1, C2) in response to a parametric audio input including signal parameters (S1) and stereo related parameters (X1). A parameter processor (M) generates two different set of parameters (P1, P2) based on the input signal parameters (S1) thus up-mixing the signal parameters (S1) by altering or manipulating the signal parameters (S1) corresponding to the stereo related parameters (X1). The two different parameters (P1, P2) are finally synthesized by separate signalsynthesizers (SS1, SS2) to form respective stereo output channels (C1, C2). Since the stereo decoding can be performed in the parameter domain instead ofthe spectral domain, the required computational burden is reduced compared to what is known in prior art. Preferably the signalsynthesizers (SS1, SS2) are sinusoidal synthesizers, and preferably the decoder also includes transient and noise synthesizers to generate transient and noise signal portions to be applied to the stereo output channels (C1, C2). Further, different transient and noise signalportions to the output channels (C1, C2) may be provided by applying different gains based on the stereorelated parameter (X1). In preferred embodiments the two parameters (P1, P2) are determined from a current as well as a previous signal parameter input, e.g. by means of an input delay line.
摘要翻译：提供了一种低复杂度的立体声音频解码器。可以以有限的计算能力获得高立体声音质，因此适合于微型和移动设备。立体声解码器响应于包括信号参数（S1）和立体声相关参数（X1）的参数音频输入而产生一组立体声输出声道（C1，C2）。参数处理器（M）基于输入信号参数（S1）生成两组不同的参数（P1，P2），从而通过改变或操纵对应于立体声的信号参数（S1）来上变频信号参数（S1）相关参数（X1）。两个不同的参数（P1，P2）最后由分离的信号合成器（SS1，SS2）合成以形成相应的立体声输出通道（C1，C2）。由于可以在参数域而不是频域执行立体声解码，与现有技术中已知的相比，减少了所需的计算负担。优选地，信号合成器（SS1，SS2）是正弦合成器，并且优选地，解码器还包括瞬态和噪声合成器，以产生要施加到立体声输出通道（C1，C2）的瞬态和噪声信号部分。此外，可以通过基于立体像差参数（X1）应用不同的增益来提供对输出通道（C1，C2）的不同的瞬态和噪声信号分量。在优选实施例中，两个参数（P1，P2）由当前以及先前的信号参数输入（例如，通过输入延迟线。

9. 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）。

10. 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）。

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