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91. 发明申请

WO2008046530A2 APPARATUS AND METHOD FOR MULTI -CHANNEL PARAMETER TRANSFORMATION 审中-公开
标题翻译：用于多通道参数变换的装置和方法
公开(公告)号：WO2008046530A2
公开(公告)日：2008-04-24
申请号：PCT/EP2007008682
申请日：2007-10-05
申请人： FRAUNHOFER GES FORSCHUNG , CODING TECH AB , KONINKL PHILIPS ELECTRONICS NV , HILPERT JOHANNES , LINZMEIER KARSTEN , HERRE JUERGEN , SPERSCHNEIDER RALPH , HOELZER ANDREAS , VILLEMOES LARS , ENGDEGARD JONAS , PURNHAGEN HEIKO , KJOERLING KRISTOFER , BREEBAART JEROEN , OOMEN WERNER
发明人： HILPERT JOHANNES , LINZMEIER KARSTEN , HERRE JUERGEN , SPERSCHNEIDER RALPH , HOELZER ANDREAS , VILLEMOES LARS , ENGDEGARD JONAS , PURNHAGEN HEIKO , KJOERLING KRISTOFER , BREEBAART JEROEN , OOMEN WERNER
CPC分类号： G10L19/173 , G10L19/008 , H04S2420/03
摘要： A parameter transformer generates level parameters, indicating an energy relation between a first and a second audio channel of a multi-channel audio signal associated to a multi-channel loudspeake configuration. The level parameter are generated based on object parameters for a plurality of audio objects associated to a down-mix channel, which is generated using object audio signals associated to the audio objects. The object parameters comprise an energy parameter indicating an energy of the object audio signal. To derive the coherence and the level parameters, a parameter generator is used, which combines the energy parameter and object rendering parameters, which depend on a desired rendering configuration.
摘要翻译：参数变换器生成水平参数，指示与多声道扬声器配置相关联的多声道音频信号的第一和第二音频声道之间的能量关系。基于与使用与音频对象相关联的对象音频信号生成的缩减混音通道相关联的多个音频对象的对象参数来生成级别参数。对象参数包括指示对象音频信号的能量的能量参数。为了导出相干性和水平参数，使用参数生成器，其将能量参数和对象渲染参数组合，这取决于期望的渲染配置。

92. 发明专利

PL1683133T3 Kodowanie lub dekodowanie sygnału audio 未知
公开(公告)号：PL1683133T3
公开(公告)日：2007-07-31
申请号：PL04770333
申请日：2004-10-28
申请人： KONINL PHILIPS ELECTRONICS NV , DOLBY INT AG
发明人： VILLEMOES LARS F , EKSTRAND PER , PURNHAGEN HEIKO , SCHUIJERS ERIK G P , DE BONT FRANSISCUS M J
IPC分类号： G10L19/008 , G10L19/00 , G10L21/02 , G10L21/038

93. 发明专利

PL1769655T3 SPOSÓB, URZĄDZENIE, URZĄDZENIE KODUJĄCE, URZĄDZENIE DEKODUJĄCE I SYSTEM AUDIO 未知
公开(公告)号：PL1769655T3
公开(公告)日：2012-05-31
申请号：PL05761091
申请日：2005-07-07
申请人： KONINL PHILIPS ELECTRONICS NV , DOLBY INT AG
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 , G10L19/008

94. 发明申请

WO2017035281A3 AUDIO ENCODING AND DECODING USING PRESENTATION TRANSFORM PARAMETERS 审中-公开
标题翻译：音频编码和解码使用表示变换参数
公开(公告)号：WO2017035281A3
公开(公告)日：2017-05-11
申请号：PCT/US2016048497
申请日：2016-08-24
申请人： DOLBY INT AB , DOLBY LABORATORIES LICENSING CORP
发明人： BREEBAART DIRK J , COOPER DAVID M , SAMUELSSON LEIF J , KOPPENS JEROEN , WILSON RHONDA J , PURNHAGEN HEIKO , GROESCHEL ALEXANDER
IPC分类号： H04S1/00 , H04S3/00 , H04S7/00
CPC分类号： H04S3/008 , G10L19/008 , H04S1/002 , H04S1/007 , H04S3/004 , H04S7/306 , H04S2400/01 , H04S2400/03 , H04S2400/11 , H04S2420/01 , H04S2420/03
摘要： A method for encoding an input audio stream including the steps of obtaining a first playback stream presentation of the input audio stream intended for reproduction on a first audio reproduction system, obtaining a second playback stream presentation of the input audio stream intended for reproduction on a second audio reproduction system, determining a set of transform parameters suitable for transforming an intermediate playback stream presentation to an approximation of the second playback stream presentation, wherein the transform parameters are determined by minimization of a measure of a difference between the approximation of the second playback stream presentation and the second playback stream presentation, and encoding the first playback stream presentation and the set of transform parameters for transmission to a decoder.
摘要翻译：一种用于对输入音频流进行编码的方法，包括以下步骤：获得用于在第一音频再现系统上再现的输入音频流的第一回放流呈现;获得用于在第二音频再现系统上再现的输入音频流的第二回放流呈现; 音频再现系统中，确定适合于将中间回放流呈现转换为第二回放流呈现的近似值的一组变换参数，其中通过最小化第二回放流的近似值呈现和第二回放流呈现，以及对第一回放流呈现和变换参数集进行编码以传输到解码器。

95. 发明申请

WO2010105926A2 ADVANCED STEREO CODING BASED ON A COMBINATION OF ADAPTIVELY SELECTABLE LEFT/RIGHT OR MID/SIDE STEREO CODING AND OF PARAMETRIC STEREO CODING 审中-公开
标题翻译：基于自适应可选左/右或中/侧立体声编码和参数立体声编码组合的高级立体声编码
公开(公告)号：WO2010105926A2
公开(公告)日：2010-09-23
申请号：PCT/EP2010052866
申请日：2010-03-05
申请人： DOLBY INT AB , PURNHAGEN HEIKO , CARLSSON PONTUS , KJOERLING KRISTOFER
发明人： PURNHAGEN HEIKO , CARLSSON PONTUS , KJOERLING KRISTOFER
IPC分类号： G10L19/00
CPC分类号： G10L19/002 , G10L19/008 , G10L19/18 , H04S3/02 , H04S5/00 , H04S5/005 , H04S5/02 , H04S2400/01 , H04S2400/03 , H04S2420/03
摘要： The application relates to audio encoder and decoder systems. An embodiment of the encoder system comprises a downmix stage for generating a downmix signal and a residual signal based on a stereo signal. In addition, the encoder system comprises a parameter determining stage for determining parametric stereo parameters such as an inter-channel intensity difference and an inter-channel cross-correlation. Preferably, the parametric stereo parameters are time- and frequency-variant. Moreover, the encoder system comprises a transform stage. The transform stage generates a pseudo left/right stereo signal by performing a transform based on the downmix signal and the residual signal. The pseudo stereo signal is processed by a perceptual stereo encoder. For stereo encoding, left/right encoding or mid/side encoding is selectable. Preferably, the selection between left/right stereo encoding and mid/side stereo encoding is time- and frequency-variant.
摘要翻译：该应用涉及音频编码器和解码器系统。编码器系统的实施例包括用于基于立体声信号来生成下混合信号和残余信号的下混合级。另外，编码器系统包括用于确定参数立体声参数（诸如声道间强度差和声道间互相关）的参数确定级。优选地，参数化立体声参数是时间和频率变化的。此外，编码器系统包括变换阶段。变换级通过基于缩混信号和残差信号执行变换来生成伪左/右立体声信号。伪立体声信号由感知立体声编码器处理。对于立体声编码，可以选择左/右编码或中/侧编码。优选地，左/右立体声编码和中/立体声编码之间的选择是时间和频率变化的。

96. 发明申请

WO2014187989A3 RECONSTRUCTION OF AUDIO SCENES FROM A DOWNMIX 审中-公开
标题翻译：从下载重建音频场景
公开(公告)号：WO2014187989A3
公开(公告)日：2015-02-19
申请号：PCT/EP2014060732
申请日：2014-05-23
申请人： DOLBY INT AB
发明人： HIRVONEN TONI , PURNHAGEN HEIKO , SAMUELSSON LEIF JONAS , VILLEMOES LARS
IPC分类号： G10L19/008 , H04S7/00
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/20 , G10L25/06 , H04S3/008 , H04S3/02 , H04S5/00 , H04S7/30 , H04S2400/03 , H04S2400/11 , H04S2420/03
摘要： Audio objects are associated with positional metadata. A received downmix signal comprises downmix channels that are linear combinations of one or more audio objects and are associated with respective positional locators. In a first aspect, the downmix signal, the positional metadata and frequency- dependent object gains are received. An audio object is reconstructed by applying the object gain to an upmix of the downmix signal in accordance with coefficients based on the positional metadata and the positional locators. In a second aspect, audio objects have been encoded together with at least one bed channel positioned at a positional locator of a corresponding downmix channel. The decoding system receives the downmix signal and the positional metadata of the audio objects. A bed channel is reconstructed by suppressing the content representing audio objects from the corresponding downmix channel on the basis of the positional locator of the corresponding downmix channel.
摘要翻译：音频对象与位置元数据相关联。接收的下混合信号包括作为一个或多个音频对象的线性组合的下混通道，并且与相应的位置定位器相关联。在第一方面，接收降混信号，位置元数据和与频率相关的对象增益。根据基于位置元数据和位置定位器的系数，将对象增益应用于缩混信号的上混合来重构音频对象。在第二方面，音频对象已经与位于对应的下混通道的位置定位器处的至少一个床通道一起被编码。解码系统接收下混合信号和音频对象的位置元数据。基于对应的下混通道的位置定位器，通过从对应的下混通道中抑制表示音频对象的内容来重构床通道。

97. 发明申请

WO2014187988A3 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：WO2014187988A3
公开(公告)日：2015-02-05
申请号：PCT/EP2014060731
申请日：2014-05-23
申请人： DOLBY INT AB
发明人： SAMUELSSON LEIF JONAS , PURNHAGEN HEIKO
IPC分类号： G10L19/00 , G10L19/008 , G10L19/032 , H03M7/30
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。

98. 发明申请

WO2013186343A3 SMOOTH CONFIGURATION SWITCHING FOR MULTICHANNEL AUDIO 审中-公开
标题翻译：多通道音频的最佳配置切换
公开(公告)号：WO2013186343A3
公开(公告)日：2014-02-06
申请号：PCT/EP2013062339
申请日：2013-06-14
申请人： DOLBY INT AB
发明人： PURNHAGEN HEIKO , SEHLSTROM LEIF , ROEDEN KARL JONAS , KJOERLING KRISTOFER , VILLEMOES LARS
IPC分类号： G10L19/18
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/18 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： A decoding system (100) reconstructs an n-channel audio signal on the basis of an input signal (A) representing the audio signal either by parametric coding or as n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters (a) controlling a spatial synthesis stage (150), which is supplied with a downmix signal from a downmix stage (140). A selector (170) controls the components of the decoding system, in steady-state parametric and discrete decoding mode and transitions between these. The downmix stage realizes a projection on the downmix signal based on an n-channel signal, either an n-channel input signal or a core signal padded with neutral values. The downmix stage is active in each time frame in which the input signal represents the audio signal by parametric coding and in at least the first time frame after the last time frame in each episode of parametrically coded time frames.
摘要翻译：解码系统（100）根据表示音频信号的输入信号（A），通过参数编码或作为n个离散编码的声道来重建n声道音频信号。基于核心信号和混合参数（a）进行参数解码，（a）控制空间合成级（150），其被提供有来自下混级（140）的降混信号。选择器（170）以稳态参数和离散解码模式控制解码系统的组件，并在这些模式之间转换。下混合阶段基于n沟道信号（n沟道输入信号或填充有中性值的核心信号）实现对下混合信号的投影。下混合阶段在每个时间帧中是活动的，其中输入信号通过参数编码表示音频信号，并且至少在每个参数编码的时间帧的最后一个时间帧之后的第一时间帧中。

99. 发明申请

WO2014161996A3 AUDIO PROCESSING SYSTEM 审中-公开
标题翻译：音频处理系统
公开(公告)号：WO2014161996A3
公开(公告)日：2014-12-04
申请号：PCT/EP2014056857
申请日：2014-04-04
申请人： DOLBY INT AB
发明人： KJOERLING KRISTOFER , PURNHAGEN HEIKO , VILLEMOES LARS
IPC分类号： G10L19/008 , G10L19/04 , G10L19/20
CPC分类号： G10L19/008 , G10L19/032 , G10L19/04 , G10L19/20
摘要： An audio processing system (100) comprises a front-end component (102, 103), which receives quantized spectral components and performs an inverse quantization, yielding a time-domain representation of an intermediate signal. The audio processing system further comprises a frequency-domain processing stage (104, 105, 106, 107, 108), configured to provide a time-domain representation of a processed audio signal, and a sample rate converter (109), providing a reconstructed audio signal sampled at a target sampling frequency. The respective internal sampling rates of the time-domain representation of the intermediate audio signal and of the time-domain representation of the processed audio signal are equal. In particular embodiments, the processing stage comprises a parametric upmix stage which is operable in at least two different modes and is associated with a delay stage that ensures constant total delay.
摘要翻译：音频处理系统（100）包括前端组件（102,103），其接收量化的频谱分量并执行逆量化，产生中间信号的时域表示。音频处理系统还包括频域处理级（104,105,106,107,108），被配置为提供经处理的音频信号的时域表示，以及采样率转换器（109），提供重建的以目标采样频率采样的音频信号。中间音频信号的时域表示和经处理的音频信号的时域表示的各自的内部采样率相等。在特定实施例中，处理阶段包括可在至少两个不同模式下操作的参数上混级，并且与确保恒定总延迟的延迟级相关联。

100. 发明申请

WO2013186344A3 SMOOTH CONFIGURATION SWITCHING FOR MULTICHANNEL AUDIO RENDERING BASED ON A VARIABLE NUMBER OF RECEIVED CHANNELS 审中-公开
标题翻译：基于可变数量的接收频道进行多通道音频渲染的最佳配置切换
公开(公告)号：WO2013186344A3
公开(公告)日：2014-02-06
申请号：PCT/EP2013062340
申请日：2013-06-14
申请人： DOLBY INT AB
发明人： PURNHAGEN HEIKO , SEHLSTROM LEIF , ROEDEN KARL JONAS , KJOERLING KRISTOFER , VILLEMOES LARS
IPC分类号： G10L19/008 , G10L19/005
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/18 , H04S3/008 , H04S2400/03 , H04S2420/03
摘要： A decoding system reconstructs an n-channel audio signal on the basis of an input signal representing the audio signal, in different time frames, either by parametric coding or as n discretely coded channels. Parametric decoding uses a core signal and mixing parameters controlling a spatial synthesis stage, to which a downmix signal is supplied from a downmix stage. The downmix stage realizes a projection on the downmix signal based on an n- channel input signal, either a discretely coded signal or a core signal padded with neutral-valued channels. The padding may take place either on the decoding side (reduced parametric coding) or the encoding side. In an embodiment, an audio decoder (110) in the decoding system pads the core signal during an initial portion of each reduced parametrically coded time frame directly succeeding a discretely coded time frame and during a final portion of each reduced parametrically coded time frame directly preceding a discretely coded time frame.
摘要翻译：解码系统通过参数编码或作为n个离散编码的信道，在不同的时间帧中，基于表示音频信号的输入信号来重构n信道音频信号。参数解码使用核心信号和控制空间合成阶段的混合参数，下混合信号从下混合级提供给它。下混合阶段基于n-沟道输入信号，即离散编码信号或填充有中性信道的核心信号实现对下混信号的投影。填充可以在解码侧（缩减参数编码）或编码侧进行。在一个实施例中，解码系统中的音频解码器（110）在直接在离散编码的时间帧之后的每个缩减的参数编码的时间帧的初始部分和在直接前进的每个缩减的参数编码的时间帧的最后部分期间，离散编码的时间帧。

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