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81. 发明申请

WO2015124598A1 DEVICE AND METHOD FOR TUNING A FREQUENCY-DEPENDENT ATTENUATION STAGE 审中-公开
标题翻译：用于调谐频率相关衰减阶段的装置和方法
公开(公告)号：WO2015124598A1
公开(公告)日：2015-08-27
申请号：PCT/EP2015/053372
申请日：2015-02-18
申请人： DOLBY INTERNATIONAL AB , DOLBY LABORATORIES LICENSING CORPORATION
发明人： PAKARINEN, Jyri Tapani , SMITHERS, Michael , TORRES, Juan Felix , PURNHAGEN, Heiko
IPC分类号： H04R3/04
CPC分类号： G10L21/0232 , H03G5/005 , H03G5/165 , H04R3/04 , H04S2400/09
摘要： A device (160) and a method are proposed for tuning a frequency-dependent attenuation stage (122),with the purpose of suppressing non-linear distortion occurring in an audio reproduction system (120) associated with the frequency- dependent attenuation stage. The device comprises a receiving section (162) adapted to receive data (161) representing an output acoustic signal (140) from the audio reproduction system,recorded upon excitation of the audio reproduction system by a predetermined input data signal(110)a first distortion detection section (163) adapted to detect presence of non-linear distortion based on the received data and to apply psycho-acoustic compensation to the detected non-linear distortion and a control section (164) adapted to determine, based on the psycho-acoustically compensated non-linear distortion, control information (170) suitable for controlling the frequency-dependent attenuation stage.
摘要翻译：提出了一种用于调谐频率相关衰减级（122）的装置（160）和方法，其目的是抑制与频率相关的衰减级相关联的音频再现系统（120）中发生的非线性失真。该设备包括接收部分（162），适于从音频再现系统接收表示来自音频再现系统的输出声信号（140）的数据（161），该音频再现系统通过预定的输入数据信号（110）激励第一失真检测部分（163），其适于基于所接收的数据来检测非线性失真的存在并且对检测到的非线性失真应用心理 - 声学补偿;以及控制部分（164），适于基于心理声学补偿的非线性失真，适于控制频率依赖衰减级的控制信息（170）。

82. 发明申请

WO2015059154A1 AUDIO ENCODER AND DECODER 审中-公开
标题翻译：音频编码器和解码器
公开(公告)号：WO2015059154A1
公开(公告)日：2015-04-30
申请号：PCT/EP2014/072571
申请日：2014-10-21
申请人： DOLBY INTERNATIONAL AB
发明人： PURNHAGEN, Heiko , KLEJSA, Janusz , VILLEMOES, Lars , HIRVONEN, Toni
IPC分类号： G10L19/008
CPC分类号： G10L19/20 , G10L19/008 , G10L19/06
摘要： This disclosure falls into the field of audio coding, in particular it is related to the field of spatial audio coding, where the audio information is represented by multiple signals, where the signals may comprise audio channels or/and audio objects. In particular the disclosure provides a method and apparatus for reconstructing audio objects in an audio decoding system. Furthermore, this disclosure provides a method and apparatus for encoding such audio objects.
摘要翻译：本公开属于音频编码领域，特别是涉及空间音频编码领域，其中音频信息由多个信号表示，其中信号可以包括音频信道或/和音频对象。具体地，本公开提供了一种用于在音频解码系统中重建音频对象的方法和装置。此外，本公开提供了一种用于对这种音频对象进行编码的方法和装置。

83. 发明申请

WO2015036351A1 METHODS AND DEVICES FOR JOINT MULTICHANNEL CODING 审中-公开
标题翻译：用于联合多通道编码的方法和设备
公开(公告)号：WO2015036351A1
公开(公告)日：2015-03-19
申请号：PCT/EP2014/069043
申请日：2014-09-08
申请人： DOLBY INTERNATIONAL AB
发明人： KJOERLING, Kristofer , MUNDT, Harald , PURNHAGEN, Heiko
IPC分类号： G10L19/008
CPC分类号： G10L19/008
摘要： Encoding and decoding devices for encoding the channels of an audio system having at least four channels are disclosed. The decoding device has a first stereo decoding component which subjects a first pair of input channels to a first stereo decoding, and a second stereo decoding component which subjects a second pair of input channels to a second stereo decoding. The results of the first and second stereo decoding components are crosswise coupled to a third and a fourth stereo decoding component which each performs stereo decoding on one channel resulting from the first stereo decoding component, and one channel resulting from the second stereo decoding component.
摘要翻译：公开了用于编码具有至少四个信道的音频系统的信道的编码和解码装置。解码装置具有使第一对输入通道进行第一立体声解码的第一立体声解码部件和使第二对输入通道进行第二立体声解码的第二立体声解码部件。第一和第二立体声解码部件的结果被交叉耦合到第三和第四立体声解码部件，每个立体声解码部件在由第一立体声解码部件产生的一个通道上执行立体声解码，以及由第二立体声解码部件产生的一个通道。

84. 发明申请

WO2014187988A2 AUDIO ENCODER AND DECODER 审中-公开
标题翻译：音频编码器和解码器
公开(公告)号：WO2014187988A2
公开(公告)日：2014-11-27
申请号：PCT/EP2014/060731
申请日：2014-05-23
申请人： DOLBY INTERNATIONAL AB
发明人： SAMUELSSON, Leif Jonas , PURNHAGEN, Heiko
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/032 , G10L19/038 , H04S3/02 , H04S2400/01 , H04S2420/03
摘要： The present disclosure provides methods, devices and computer program products for encoding and decoding of a vector of parameters in an audio coding system. The disclosure further relates to a method and apparatus for reconstructing an audio object in an audio decoding system. According to the disclosure, a modulo differential approach for coding and encoding a vector of a non-periodic quantity may improve the coding efficiency and provide encoders and decoders with less memory requirements. Moreover, an efficient method for encoding and decoding a sparse matrix is provided.
摘要翻译：本公开提供了用于对音频编码系统中的参数矢量进行编码和解码的方法，设备和计算机程序产品。本发明还涉及用于在音频解码系统中重建音频对象的方法和装置。根据本公开，用于对非周期性量的向量进行编码和编码的模差分方法可以提高编码效率，并提供具有较少存储器要求的编码器和解码器。此外，提供了一种用于编码和解码稀疏矩阵的有效方法。

85. 发明申请

WO2014161992A1 AUDIO ENCODER AND DECODER 审中-公开
标题翻译：音频编码器和解码器
公开(公告)号：WO2014161992A1
公开(公告)日：2014-10-09
申请号：PCT/EP2014/056852
申请日：2014-04-04
申请人： DOLBY INTERNATIONAL AB
发明人： KJOERLING, Kristofer , PURNHAGEN, Heiko , MUNDT, Harald , ROEDEN, Karl Jonas , SEHLSTROM, Leif
IPC分类号： G10L19/008
CPC分类号： G10L19/20 , G10L19/008 , G10L19/0212 , G10L19/167 , G10L25/18 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： The present disclosure provides methods, devices and computer program products for encoding and decoding a multi-channel audio signal based on an input signal. According to the disclosure, a hybrid approach of using both parametric stereo coding and discrete representation of the processed multi-channel audio signal is used which may improve the quality of the encoded and decoded audio for certain bitrates.
摘要翻译：本公开提供了用于基于输入信号对多声道音频信号进行编码和解码的方法，设备和计算机程序产品。根据本公开，使用使用参数立体声编码和处理的多声道音频信号的离散表示的混合方法，其可以提高针对某些比特率的编码和解码的音频的质量。

86. 发明申请

WO2013124446A1 AUDIO PROCESSING 审中-公开
标题翻译：音频处理
公开(公告)号：WO2013124446A1
公开(公告)日：2013-08-29
申请号：PCT/EP2013/053610
申请日：2013-02-22
申请人： DOLBY INTERNATIONAL AB
发明人： KJOERLING, Kristofer , PURNHAGEN, Heiko , ROEDEN, Karl Jonas , SEHLSTROM, Leif , VILLEMOES, Lars
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , H04S2420/03
摘要： An audio processing system (100) for spatial synthesis comprises an upmix stage (110) receiving a decoded m-channel downmix signal (X) and outputting, based thereon, an n-channel upmix signal (Y), wherein 2 ≤ m 1 , d 2 ) obtained by cross mixing and non-linear processing of the downmix signal, and further comprises a first mixing matrix (130) receiving the downmix signal and the modified downmix signal, forming an n-channel linear combination of the downmix signal channels and modified downmix signal channels only and outputting this as the n-channel upmix signal. In an embodiment, the first mixing matrix accepts one or more mixing parameters (g, α 1 ,...) controlling at least one gain in the linear combination performed by the first mixing matrix. The gains are polynomials of degree ≤2.
摘要翻译：用于空间合成的音频处理系统（100）包括接收解码的m信道下混合信号（X）的上混级（110）并基于此输出n沟道上混合信号（Y），其中2 <= m < ñ。上混级包括下混修改处理器（120），其接收m声道下混信号并输出通过下混信号的交叉混合和非线性处理获得的修改的下混合信号（d1，d2），并且还包括第一接收下混合信号和修正的下混合信号的混合矩阵（130），仅形成降混信号通道和修正的下混信号通道的n通道线性组合，并将其输出为n通道上混信号。在一个实施例中，第一混合矩阵接受控制由第一混合矩阵执行的线性组合中的至少一个增益的一个或多个混合参数（g，α1，...）。增益是度<= 2的多项式。

87. 发明申请

WO2013045693A2 HIGH QUALITY DETECTION IN FM STEREO RADIO SIGNALS 审中-公开
标题翻译： FM立体声无线电信号的高质量检测
公开(公告)号：WO2013045693A2
公开(公告)日：2013-04-04
申请号：PCT/EP2012/069330
申请日：2012-10-01
申请人： DOLBY INTERNATIONAL AB
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , SEHLSTROM, Leif
IPC分类号： G10L25/69
CPC分类号： H04H40/45 , G10L19/008 , G10L25/69 , H04B1/1676
摘要： The present document relates to audio signal processing, in particular to an apparatus and a corresponding method for improving an audio signal of an FM stereo radio receiver. In particular, the present document relates to a method and system for reliably detecting the quality of a received FM stereo radio signal and for selecting an appropriate processing based on the detected quality. An apparatus (20) configured to estimate the quality of a received multi-channel FM radio signal is described. The received multi¬ channel FM radio signal is representable as a mid signal and a side signal, and the side signal is indicative of a difference between a left signal and a right signal. The apparatus (20) comprises a power determination unit configured to determine (101) a power of the mid signal, referred to as mid power, and a power of the side signal, referred to as side power; a ratio determination unit configured to determine (102) a ratio of the mid power and the side power, thereby yielding a mid-to-side ratio; and a quality determination unit configured to determine (105) a quality indicator of the received FM radio signal based at least on the mid-to-side ratio.
摘要翻译：本文件涉及音频信号处理，尤其涉及用于改进FM立体声无线电接收器的音频信号的装置和相应方法。特别地，本文件涉及用于可靠地检测所接收的FM立体声无线电信号的质量并且用于基于检测到的质量选择适当的处理的方法和系统。描述了被配置为估计所接收的多频道FM无线电信号的质量的装置（20）。收到的multi＆not; 信道FM无线电信号可表示为中间信号和侧信号，侧信号表示左信号和右信号之间的差异。所述装置（20）包括功率确定单元，所述功率确定单元被配置为确定（101）被称为中功率的中间信号的功率和被称为侧功率的侧信号的功率; 比率确定单元，被配置为确定（102）中等功率和副功率的比率，从而产生中等比率; 以及质量确定单元，被配置为至少基于所述中侧比确定（105）所接收的FM无线电信号的质量指标。

88. 发明申请

WO2022179848A2 AUDIO OBJECT PROCESSING 审中-公开
公开(公告)号：WO2022179848A2
公开(公告)日：2022-09-01
申请号：PCT/EP2022/053082
申请日：2022-02-09
申请人： DOLBY INTERNATIONAL AB
发明人： SAMUELSSON, Leif Jonas , PURNHAGEN, Heiko , VILLEMOES, Lars
IPC分类号： G10L19/008 , H04S3/00 , H04S2400/03 , H04S2400/11 , H04S2400/13 , H04S2420/03 , H04S3/008
摘要： A method for modifying object reconstruction information, comprising obtaining a set of N spatial audio objects, each spatial audio object including an audio signal and spatial metadata, obtaining an audio presentation representing the N spatial audio objects, obtaining object reconstruction information configured to reconstruct the N spatial audio objects from the audio presentation, applying the reconstruction information to the audio presentation to form a set of N reconstructed spatial audio objects, using a first rendering configuration, rendering the N spatial audio objects to obtain a first rendered presentation, and rendering the N reconstructed spatial audio objects to obtain a second rendered presentation, and modifying the reconstruction information based on a difference between the first rendered presentation and the second rendered presentation, thereby forming modified reconstruction information.

89. 发明申请

WO2022055883A1 PROCESSING PARAMETRICALLY CODED AUDIO 审中-公开
公开(公告)号：WO2022055883A1
公开(公告)日：2022-03-17
申请号：PCT/US2021/049285
申请日：2021-09-07
申请人： DOLBY LABORATORIES LICENSING CORPORATION , DOLBY INTERNATIONAL AB
发明人： BREEBAART, Dirk Jeroen , ECKERT, Michael , PURNHAGEN, Heiko
IPC分类号： G10L19/008 , G10L19/16
摘要： A method comprising receiving a first input bit stream for a first parametrically coded input audio signal, the first input bit stream including data representing a first input core audio signal and a first set including at least one spatial parameter relating to the first parametrically coded input audio signal. A first covariance matrix of the first parametrically coded audio signal is determined based on the spatial parameter(s) of the first set. A modified set including at least one spatial parameter is determined based on the determined first covariance matrix, wherein the modified set is different from the first set. An output core audio signal is determined, which is based on, or constituted by, the first input core audio signal. An output bit stream for a parametrically coded output audio signal is generated, the output bit stream including data representing the output core audio signal and the modified set.

90. 发明申请

WO2019211237A1 METHODS AND SYSTEMS FOR STREAMING MEDIA DATA OVER A CONTENT DELIVERY NETWORK 审中-公开
公开(公告)号：WO2019211237A1
公开(公告)日：2019-11-07
申请号：PCT/EP2019/060919
申请日：2019-04-29
申请人： DOLBY INTERNATIONAL AB
发明人： KLEJSA, Janusz , PURNHAGEN, Heiko
IPC分类号： H04L29/08 , H04L29/06 , H04N21/6332 , H04N21/6373
摘要： The present document describes a method (900) for establishing control information for a control policy of a client (102) for streaming data (103) from at least one server (101, 701). The method (900) comprises performing (901) a message passing process between a server agent of the server (101, 701) and a client agent of the client (102), in order to iteratively establish control information. Furthermore, the method (900) comprises generating (902) a convergence event for the message passing process to indicate that the control information has been established.

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