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1. 发明申请

WO2012059385A1 DATA STRUCTURE FOR HIGHER ORDER AMBISONICS AUDIO DATA 审中-公开
标题翻译：数据结构用于更高级别的AMBISONICS音频数据
公开(公告)号：WO2012059385A1
公开(公告)日：2012-05-10
申请号：PCT/EP2011/068782
申请日：2011-10-26
申请人： THOMSON LICENSING , KEILER, Florian , KORDON, Sven , BOEHM, Johannes , KROPP, Holger , BATKE, Johann-Markus
发明人： KEILER, Florian , KORDON, Sven , BOEHM, Johannes , KROPP, Holger , BATKE, Johann-Markus
IPC分类号： G10L19/00 , H04S3/00
CPC分类号： H04R5/02 , G10L19/008 , G10L19/167 , H04S3/00 , H04S2420/11
摘要： The invention is related to a data structure for Higher Order Ambisonics HOA audio data, which data structure includes 2D or 3D spatial audio content data for one or more different HOA audio data stream descriptions. The HOA audio data can have on order of greater than '3', and the data structure in addition can include single audio signal source data and/or microphone array audio data from fixed or time-varying spatial positions.
摘要翻译：本发明涉及用于高阶组合HOA音频数据的数据结构，该数据结构包括用于一个或多个不同HOA音频数据流描述的2D或3D空间音频内容数据。 HOA音频数据可以具有大于“3”的顺序，并且数据结构另外可以包括来自固定或时变空间位置的单个音频信号源数据和/或麦克风阵列音频数据。

2. 发明申请

WO2011117399A1 METHOD AND DEVICE FOR DECODING AN AUDIO SOUNDFIELD REPRESENTATION FOR AUDIO PLAYBACK 审中-公开
标题翻译：用于解码用于音频播放的音频声音表示的方法和设备
公开(公告)号：WO2011117399A1
公开(公告)日：2011-09-29
申请号：PCT/EP2011/054644
申请日：2011-03-25
申请人： THOMSON LICENSING , BATKE, Johann-Markus , KEILER, Florian , BOEHM, Johannes
发明人： BATKE, Johann-Markus , KEILER, Florian , BOEHM, Johannes
IPC分类号： H04S3/02 , G10L19/00
CPC分类号： G10L19/008 , H04S3/02 , H04S7/308 , H04S2400/13 , H04S2420/11
摘要： Soundfield signals such as e.g. Ambisonics carry a representation of a desired sound field. The Ambisonics format is based on spherical harmonic decomposition of the soundfield, and Higher Order Ambisonics (HOA) uses spherical harmonics of at least 2nd order. However, commonly used loudspeaker setups are irregular and lead to problems in decoder design. A method for improved decoding an audio soundfield representation for audio playback comprises calculating (110) a panning function (W) using a geometrical method based on the positions of a plurality of loudspeakers and a plurality of source directions, calculating (120) a mode matrix (Ξ) from the loudspeaker positions, calculating (130) a pseudo-inverse mode matrix (Ξ+) and decoding (140) the audio soundfield representation. The decoding is based on a decode matrix (D) that is obtained from the panning function (W) and the pseudo-inverse mode matrix (Ξ+).
摘要翻译： Soundfield信号，例如 Ambisonics携带所需声场的表示。 Ambisonics格式基于声场的球谐函数分解，而高阶Ambisonics（HOA）使用至少二阶的球谐函数。然而，常用的扬声器设置是不规则的，并导致解码器设计中的问题。一种用于改进对用于音频回放的音频声场表示进行解码的方法包括：使用基于多个扬声器和多个源方向的位置的几何方法来计算（110）平移功能（110），计算（120）模式矩阵（λ），从而计算（130）伪逆模式矩阵（α+）并解码（140）音频声场表示。解码基于从平移功能（W）和伪逆模式矩阵（α+）获得的解码矩阵（D）。

3. 发明申请

WO2013000740A1 METHOD AND APPARATUS FOR CHANGING THE RELATIVE POSITIONS OF SOUND OBJECTS CONTAINED WITHIN A HIGHER-ORDER AMBISONICS REPRESENTATION 审中-公开
标题翻译：改变高阶代偿声明中包含的声音对象的相对位置的方法和装置
公开(公告)号：WO2013000740A1
公开(公告)日：2013-01-03
申请号：PCT/EP2012/061477
申请日：2012-06-15
申请人： THOMSON LICENSING , JAX, Peter , BATKE, Johann-Markus
发明人： JAX, Peter , BATKE, Johann-Markus
IPC分类号： G10L21/00 , H04S3/00
CPC分类号： H04S5/00 , G10L21/00 , H04R2205/024 , H04S3/002 , H04S2400/11 , H04S2420/11
摘要： Higher-order Ambisonics HOA is a representation of spatial sound fields that facilitates capturing, manipulating, recording, transmission and playback of complex audio scenes with superior spatial resolution, both in 2D and 3D. The sound field is approximated at and around a reference point in space by a Fourier-Bessel series. The invention uses space warping (12, 13, 14; 16) for modifying the spatial content and/or the reproduction of sound-field information that has been captured or produced as a higher-order Ambisonics representation. Different warping characteristics are feasible for 2D and 3D sound fields. The warping is performed in space domain without performing scene analysis or decomposition. Input HOA coefficients with a given order are decoded to the weights or input signals of regularly positioned (virtual) loudspeakers.
摘要翻译：高阶环境HOA是空间声场的表示，有助于在2D和3D中捕获，操纵，记录，传输和播放具有优异空间分辨率的复杂音频场景。声场通过傅里叶Bessel系列在空间中的参考点附近和周围近似。本发明使用空间扭曲（12,13,14; 16）来修改作为高阶Ambisonics表示被捕获或产生的声场信息的空间内容和/或再现。不同的翘曲特性对于2D和3D声场是可行的。翘曲在空间域执行，而不进行场景分析或分解。具有给定次序的输入HOA系数被解码为规则定位（虚拟）扬声器的权重或输入信号。

4. 发明申请

WO2013171083A1 METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS SIGNAL REPRESENTATION 审中-公开
标题翻译：用于压缩和分解更高秩序的健康信号表示的方法和装置
公开(公告)号：WO2013171083A1
公开(公告)日：2013-11-21
申请号：PCT/EP2013/059363
申请日：2013-05-06
申请人： THOMSON LICENSING
发明人： KRÜGER, Alexander , KORDON, Sven , BOEHM, Johannes , BATKE, Johann-Markus
IPC分类号： H04H20/89
CPC分类号： H04S3/008 , G10L19/008 , G10L19/20 , H04H20/89 , H04S3/02 , H04S2420/11
摘要： Higher Order Ambisonics (HOA) represents a complete sound field in the vicinity of a sweet spot, independent of loudspeaker set-up. The high spatial resolution requires a high number of HOA coefficients. In the invention, dominant sound directions are estimated and the HOA signal representation is decomposed into dominant directional signals in time domain and related direction information, and an ambient component in HOA domain, followed by compression of the ambient component by reducing its order. The reduced-order ambient component is transformed to the spatial domain, and is perceptually coded together with the directional signals. At receiver side, the encoded directional signals and the order-reduced encoded ambient component are perceptually decompressed, the perceptually decompressed ambient signals are transformed to an HOA domain representation of reduced order, followed by order extension. The total HOA representation is recomposed from the directional signals, the corresponding direction information,and the original-order ambient HOA component.
摘要翻译：高阶Ambisonics（HOA）代表一个完美的声场，位于甜蜜点附近，独立于扬声器设置。高空间分辨率需要大量的HOA系数。在本发明中，主要声音方向被估计，并且HOA信号表示被分解成时域中的主要方向信号和相关方向信息，以及HOA域中的环境分量，随后通过降低其顺序来压缩环境分量。将低阶环境分量变换为空间域，并与定向信号一起被感知地编码。在接收机侧，编码的定向信号和降序编码的环境分量被感知地解压缩，感知解压缩的环境信号被转换为降序的HOA域表示，随后是顺序扩展。总的HOA表示由方向信号，相应的方向信息和原始阶环境HOA分量重组。

5. 发明申请

WO2013068284A1 METHOD AND APPARATUS FOR PROCESSING SIGNALS OF A SPHERICAL MICROPHONE ARRAY ON A RIGID SPHERE USED FOR GENERATING AN AMBISONICS REPRESENTATION OF THE SOUND FIELD 审中-公开
标题翻译：用于处理用于产生声场的代表性的刚性球囊上的球形麦克风阵列的信号的方法和装置
公开(公告)号：WO2013068284A1
公开(公告)日：2013-05-16
申请号：PCT/EP2012/071537
申请日：2012-10-31
申请人： THOMSON LICENSING
发明人： KORDON, Sven , BATKE, Johann-Markus , KRÜGER, Alexander
IPC分类号： H04R3/00 , H04R5/027
CPC分类号： H04R3/005 , H04R1/326 , H04R1/406 , H04R5/027 , H04R29/005 , H04R2201/401 , H04S2400/15
摘要： Spherical microphone arrays capture a three-dimensional sound field {P(Jlc,t)) for generating an Ambisonics representation {A™(t)), where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalisation of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise. The invention estimates (73) the signal-to-noise ratio between the average sound field power and the noise power from the microphone array capsules, computes (74) the average spatial signal power at the point of origin for a diffuse sound field, and designs in the frequency domain the frequency response of the equalisation filter from the square root of the fraction of a given reference power and the simulated power at the point of origin.
摘要翻译：球形麦克风阵列捕获用于产生Ambisonics表示{A（TM）（t））的三维声场{P（Jlc，t）），其中球体表面上的压力分布由阵列。使用反向麦克风传递功能可以消除麦克风对拍摄声场的影响。麦克风阵列的传递函数的均衡是一个大问题，因为传递函数的倒数对传递函数中的小值造成高增益，这些小值受传感器噪声的影响。本发明估计（73）来自麦克风阵列胶囊的平均声场功率和噪声功率之间的信噪比计算（74）漫射声场的原点处的平均空间信号功率，以及在频域中设计均衡滤波器从给定参考功率的分数的平方根的频率响应和原点处的模拟功率。

6. 发明申请

WO2013068283A1 METHOD AND APPARATUS FOR PROCESSING SIGNALS OF A SPHERICAL MICROPHONE ARRAY ON A RIGID SPHERE USED FOR GENERATING AN AMBISONICS REPRESENTATION OF THE SOUND FIELD 审中-公开
标题翻译：用于处理用于产生声场的代表性的刚性球囊上的球形麦克风阵列的信号的方法和装置
公开(公告)号：WO2013068283A1
公开(公告)日：2013-05-16
申请号：PCT/EP2012/071535
申请日：2012-10-31
申请人： THOMSON LICENSING
发明人： KORDON, Sven , BATKE, Johann-Markus , KRÜGER, Alexander
IPC分类号： H04R3/00 , H04R5/027
CPC分类号： H04R5/027 , H04R1/326 , H04R1/406 , H04R3/005 , H04R29/005 , H04R2201/401 , H04S2400/15
摘要： Spherical microphone arrays capture a three-dimensional sound field {P(Ω c ,t)) for generating an Ambisonics representation {A m n(t)), where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalisation of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise. The invention minimises that noise by using a Wiener filter processing (34) in the frequency domain, which processing is automatically controlled (33) per wave number by the signal-to-noise ratio of the microphone array.
摘要翻译：球形麦克风阵列捕获用于产生Ambisonics表示{Amn（t））的三维声场{P（Omegac，t）），其中球体表面上的压力分布由阵列的胶囊取样。使用反向麦克风传递功能可以消除麦克风对拍摄声场的影响。麦克风阵列的传递函数的均衡是一个大问题，因为传递函数的倒数对传递函数中的小值造成高增益，这些小值受传感器噪声的影响。本发明通过使用频域中的维纳滤波器处理（34）来最小化噪声，该处理通过麦克风阵列的信噪比自动控制（33）每波数。

7. 发明公开

EP2850753A1 METHOD AND APPARATUS FOR COMPRESSING AND DECOMPRESSING A HIGHER ORDER AMBISONICS SIGNAL REPRESENTATION 有权转让
标题翻译：用于压缩和立体混响的解压缩表示方法和设备的信号高阶
公开(公告)号：EP2850753A1
公开(公告)日：2015-03-25
申请号：EP13722362.4
申请日：2013-05-06
申请人： Thomson Licensing
发明人： KRÜGER, Alexander , KORDON, Sven , BOEHM, Johannes , BATKE, Johann-Markus
IPC分类号： H04H20/89
CPC分类号： H04S3/008 , G10L19/008 , G10L19/20 , H04H20/89 , H04S3/02 , H04S2420/11
摘要： Higher Order Ambisonics (HOA) represents a complete sound field in the vicinity of a sweet spot, independent of loudspeaker set-up. The high spatial resolution requires a high number of HOA coefficients. In the invention, dominant sound directions are estimated and the HOA signal representation is decomposed into dominant directional signals in time domain and related direction information, and an ambient component in HOA domain, followed by compression of the ambient component by reducing its order. The reduced-order ambient component is transformed to the spatial domain, and is perceptually coded together with the directional signals. At receiver side, the encoded directional signals and the order-reduced encoded ambient component are perceptually decompressed, the perceptually decompressed ambient signals are transformed to an HOA domain representation of reduced order, followed by order extension. The total HOA representation is re-composed from the directional signals, the corresponding direction information, and the original-order ambient HOA component.

8. 发明公开

EP2777297A1 METHOD AND APPARATUS FOR PROCESSING SIGNALS OF A SPHERICAL MICROPHONE ARRAY ON A RIGID SPHERE USED FOR GENERATING AN AMBISONICS REPRESENTATION OF THE SOUND FIELD 有权转让
标题翻译：的方法和装置对于球形麦克风装置的处理信号在刚性球用于产生声音场的立体混响声PLAYBACK
公开(公告)号：EP2777297A1
公开(公告)日：2014-09-17
申请号：EP12783190.7
申请日：2012-10-31
申请人： Thomson Licensing
发明人： KORDON, Sven , BATKE, Johann-Markus , KRÜGER, Alexander
IPC分类号： H04R3/00 , H04R5/027
CPC分类号： H04R5/027 , H04R1/326 , H04R1/406 , H04R3/005 , H04R29/005 , H04R2201/401 , H04S2400/15
摘要： Spherical microphone arrays capture a three-dimensional sound field {P(Ω
c ,t)) for generating an Ambisonics representation {A
m n(t)), where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalisation of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise. The invention minimises that noise by using a Wiener filter processing (34) in the frequency domain, which processing is automatically controlled (33) per wave number by the signal-to-noise ratio of the microphone array.

9. 发明公开

EP2777298A1 METHOD AND APPARATUS FOR PROCESSING SIGNALS OF A SPHERICAL MICROPHONE ARRAY ON A RIGID SPHERE USED FOR GENERATING AN AMBISONICS REPRESENTATION OF THE SOUND FIELD 有权转让
标题翻译：方法和设备对于球形麦克风排列在一个刚性球处理信号用于生产补球功能，播放或重放声场AMBISONICS-的
公开(公告)号：EP2777298A1
公开(公告)日：2014-09-17
申请号：EP12788472.4
申请日：2012-10-31
申请人： Thomson Licensing
发明人： KORDON, Sven , BATKE, Johann-Markus , KRÜGER, Alexander
IPC分类号： H04R3/00 , H04R5/027
CPC分类号： H04R3/005 , H04R1/326 , H04R1/406 , H04R5/027 , H04R29/005 , H04R2201/401 , H04S2400/15
摘要： Spherical microphone arrays capture a three-dimensional sound field {P(Jlc,t)) for generating an Ambisonics representation {A™(t)), where the pressure distribution on the surface of the sphere is sampled by the capsules of the array. The impact of the microphones on the captured sound field is removed using the inverse microphone transfer function. The equalisation of the transfer function of the microphone array is a big problem because the reciprocal of the transfer function causes high gains for small values in the transfer function and these small values are affected by transducer noise. The invention estimates (73) the signal-to-noise ratio between the average sound field power and the noise power from the microphone array capsules, computes (74) the average spatial signal power at the point of origin for a diffuse sound field, and designs in the frequency domain the frequency response of the equalisation filter from the square root of the fraction of a given reference power and the simulated power at the point of origin.

10. 发明授权

EP2636036B1 DATA STRUCTURE FOR HIGHER ORDER AMBISONICS AUDIO DATA 有权转让
标题翻译：数据结构立体混响音频数据高阶
公开(公告)号：EP2636036B1
公开(公告)日：2014-08-27
申请号：EP11776422.5
申请日：2011-10-26
申请人： Thomson Licensing
发明人： KEILER, Florian , KORDON, Sven , BOEHM, Johannes , KROPP, Holger , BATKE, Johann-Markus
IPC分类号： G10L19/008 , H04R5/02 , H04S3/00
CPC分类号： H04R5/02 , G10L19/008 , G10L19/167 , H04S3/00 , H04S2420/11

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