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91. 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。

92. 发明申请

WO2013045693A3 HIGH QUALITY DETECTION IN FM STEREO RADIO SIGNALS 审中-公开
标题翻译： FM立体声无线电信号中的高质量检测
公开(公告)号：WO2013045693A3
公开(公告)日：2013-06-20
申请号：PCT/EP2012069330
申请日：2012-10-01
申请人： DOLBY INT AB
发明人： ENGDEGARD JONAS , PURNHAGEN HEIKO , SEHLSTROM LEIF
IPC分类号： G10L25/69 , H04B1/16 , H04H20/12 , H04H40/45
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，特别涉及用于改进FM立体声无线电接收机的音频信号的装置和相应的方法。特别地，本文件涉及一种用于可靠地检测接收的FM立体声无线电信号的质量并且基于检测到的质量来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）。所接收的多频道FM无线电信号可表示为中间信号和侧信号，并且侧信号表示左信号和右信号之间的差。设备（20）包括功率确定单元，被配置为确定（101）被称为中间功率的中间信号的功率和被称为侧向功率的侧信号的功率; 比率确定单元，被配置为确定（102）中间功率和侧面功率的比率，从而产生中间到侧面的比率; 以及质量确定单元，被配置为至少基于中间到侧边比率来确定（105）所接收的FM无线电信号的质量指示符。

93. 发明申请

WO2012025431A3 CONCEALMENT OF INTERMITTENT MONO RECEPTION OF FM STEREO RADIO RECEIVERS 审中-公开
标题翻译：调频立体声无线电接收机间歇单声道接收的隐蔽性
公开(公告)号：WO2012025431A3
公开(公告)日：2012-04-19
申请号：PCT/EP2011064084
申请日：2011-08-16
申请人： DOLBY INT AB , SEHLSTROM LEIF , PURNHAGEN HEIKO , ENGDEGARD JONAS
发明人： SEHLSTROM LEIF , PURNHAGEN HEIKO , ENGDEGARD JONAS
IPC分类号： G10L19/00 , G10L19/005 , G10L19/008 , G10L21/02 , H04B1/16 , H04H40/81 , H04S3/02
CPC分类号： H04R5/00 , G10L19/005 , G10L19/008 , G10L21/0364 , H04B1/1676 , H04H40/81
摘要： The present invention relates to audio signal processing. In particular, it relates to a method and system for reliably concealing intermittent mono reception of FM stereo radio receivers. The system comprises a parametric stereo parameter estimation stage configured to determine a first parametric stereo parameter based on a first frame of the received two-channel audio signal. The system further comprises a concealment detection stage configured to determine an energy of a side signal within the first signal frame; determine a number of following successive signal frames during which the energy of the side signal drops from a value above the high threshold to a value below a low threshold; determine that the two-channel audio signal following the first signal frame is a forced mono signal if the number of successive signal frames is below a frame threshold; and determine the parametric stereo parameter based on the first parametric stereo parameter.
摘要翻译：本发明涉及音频信号处理。特别涉及可靠地隐藏FM立体声无线电接收机的间歇单声道接收的方法和系统。该系统包括参数立体声参数估计级，其被配置为基于所接收的双声道音频信号的第一帧来确定第一参数立体声参数。该系统还包括隐藏检测级，其被配置为确定第一信号帧内的旁侧信号的能量; 确定侧信号的能量从高于高阈值的值下降到低于低阈值的值的后续连续信号帧的数量; 如果连续信号帧的数量低于帧阈值，则确定在第一信号帧之后的双声道音频信号是强制单声道信号; 并基于第一参数立体声参数确定参数立体声参数。

94. 发明申请

WO2011029570A1 IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 审中-公开
标题翻译： FM立方体无线电接收机的音频信号改进使用参数立体声
公开(公告)号：WO2011029570A1
公开(公告)日：2011-03-17
申请号：PCT/EP2010005481
申请日：2010-09-07
申请人： DOLBY INT AB , ENGDEGARD JONAS , PURNHAGEN HEIKO , ROEDEN KARL JONAS
发明人： ENGDEGARD JONAS , PURNHAGEN HEIKO , ROEDEN KARL JONAS
IPC分类号： H04S1/00 , H04B1/16 , H04H40/45 , H04H40/81 , H04S5/00
CPC分类号： H04S3/00 , G10L19/008 , H04H40/45 , H04H40/72 , H04H40/81 , H04S1/00 , H04S1/007 , H04S5/00 , H04S2420/03
摘要： The invention relates to an apparatus for improving a stereo audio signal of an FM stereo radio receiver. The apparatus comprises a parametric stereo (PS) parameter estimation stage. The parameter estimation stage is configured to determine one or more parametric stereo parameters based on the stereo audio signal in a frequency-variant or frequency-invariant manner. Preferably, these PS parameters are time- and frequency-variant. Moreover, the apparatus comprises an upmix stage. The upmix stage is configured to generate the improved stereo signal based on a first audio signal and the one or more parametric stereo parameters. The first audio signal is obtained from the stereo audio signal, e.g. by a downmix operation in a downmix stage. The PS parameter estimation stage may be part of a PS encoder. The upmix stage may be part of a PS decoder.
摘要翻译：本发明涉及一种用于改进FM立体声无线电接收机的立体声音频信号的装置。该装置包括参数立体声（PS）参数估计级。参数估计级被配置为基于立体声音频信号以频率变化或频率不变的方式确定一个或多个参数立体声参数。优选地，这些PS参数是时间和频率变化的。此外，该装置包括上混级。上混级被配置为基于第一音频信号和一个或多个参数立体声参数来生成改进的立体声信号。第一音频信号是从立体声音频信号获得的。通过下混合阶段的下混合操作。 PS参数估计阶段可以是PS编码器的一部分。上混级可以是PS解码器的一部分。

95. 发明公开

EP3286930A1 SPATIAL AUDIO SIGNAL MANIPULATION 有权转让
公开(公告)号：EP3286930A1
公开(公告)日：2018-02-28
申请号：EP16720969
申请日：2016-04-20
申请人： DOLBY LABORATORIES LICENSING CORP , DOLBY INT AB
发明人： BREEBAART DIRK JEROEN , MATEOS SOLE ANTONIO , PURNHAGEN HEIKO , TSINGOS NICOLAS R
IPC分类号： H04S7/00
CPC分类号： H04S7/30 , H04S2400/11 , H04S2420/03
摘要： Described herein is a method (30) of rendering an audio signal (17) for playback in an audio environment (27) defined by a target loudspeaker system (23), the audio signal (17) including audio data relating to an audio object and associated position data indicative of an object position. Method (30) includes the initial step (31) of receiving the audio signal (17). At step (32) loudspeaker layout data for the target loudspeaker system (23) is received. At step (33) control data is received that is indicative of a position modification to be applied to the audio object in the audio environment (27). At step (38) in response to the position data, loudspeaker layout data and control data, rendering modification data is generated. Finally, at step (39) the audio signal (17) is rendered with the rendering modification data to output the audio signal (17) with the audio object at a modified object position that is between loudspeakers within the audio environment (27).

96. 发明授权

EP2973551B1 RECONSTRUCTION OF AUDIO SCENES FROM A DOWNMIX 有权转让
标题翻译： REKONSTRUKTION VON AUDIOSZENEN AUS EINEM DOWNMIX
公开(公告)号：EP2973551B1
公开(公告)日：2017-05-03
申请号：EP14725737
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 , G10L19/20 , 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

98. 发明专利

CA2566992C APPARATUS AND METHOD FOR GENERATING MULTI-CHANNEL SYNTHESIZER CONTROL SIGNAL AND APPARATUS AND METHOD FOR MULTI-CHANNEL SYNTHESIZING 未知
公开(公告)号：CA2566992C
公开(公告)日：2013-12-24
申请号：CA2566992
申请日：2006-01-19
申请人： FRAUNHOFER GES FORSCHUNG , CODING TECH AB , KONINKL PHILIPS ELECTRONICS NV
发明人： NEUSINGER MATTHIAS , HERRE JUERGEN , DISCH SASCHA , PURNHAGEN HEIKO , KJOERLING KRISTOFER , ENGDEGARD JONAS , BREEBAART JEROEN , SCHUIJERS ERIK , OOMEN WERNER
IPC分类号： G10L19/008 , H04S3/00
摘要： On an encoder-side, a multi-channel audio input signal is analyzed for obtaining smoothing control information, which is to be used by a decoder-side multi-channel audio synthesis for smoothing quantized transmitted parameters or values derived from the quantized transmitted parameters for providing an improved subjective audio quality in particular for slowly moving point sources and rapidly moving point sources having tonal material such as fast moving sinusoids.

99. 发明专利

HK1175580A1 APPARATUS FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION ON THE BASIS OF A DOWNMIX SIGNAL REPRESENTATION, APPARATUS FOR PROVIDING A BITSTREAM REPRESENTING A MULTICHANNEL AUDIO SIGNAL, METHODS, COMPUTER PROGRAM AND BITSTREAM USING A DISTORTION CONTROL SIGNALING 未知
公开(公告)号：HK1175580A1
公开(公告)日：2013-07-05
申请号：HK13102304
申请日：2013-02-22
申请人： FRAUNHOFER GES FORSCHUNG
发明人： ENGDEGARD JONAS , PURNHAGEN HEIKO , HERRE JRGEN , TERENTIV LEON , FALCH CORNELIA , HELLMUTH OLIVER
IPC分类号： G10L19/008 , H04S20060101
摘要： An apparatus for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information, which are included in a bitstream representation of an audio content, and in dependence on a rendering information, has a distortion limiter configured to adjust upmix parameters using a distortion control scheme to avoid or limit audible distortions which are caused by an inappropriate choice of rendering parameters. The distortion limiter is configured to obtain a distortion limitation control parameter, which is included in the bitstream representation of the audio content, and to adjust a distortion control scheme in dependence on the distortion limitation control parameter.

100. 发明专利

ES2297825T3 CUANTIFICACION DEPENDIENTE DE ENERGIA PARA LA CODIFICACION EFICAZ DE PARAMETROS DE AUDIO ESPACIALES. 未知
公开(公告)号：ES2297825T3
公开(公告)日：2008-05-01
申请号：ES06724214
申请日：2006-04-10
申请人： CODING TECH AB , FRAUNHOFER GES FORSCHUNG , KONINKL PHILIPS ELECTRONICS NV
发明人： ROEDEN JONAS , ENGDEGARD JONAS , PURNHAGEN HEIKO , BREEBAART JEROEN , SCHUIJERS ERIK , VAN DE PAR STEVEN
IPC分类号： G10L19/00
摘要： Cuantificador de parámetros para cuantificar un parámetro de entrada, el que el parámetro de entrada es una medida para una característica de un único canal o un par de canales con respecto a otro único canal o un par de canales de una señal multicanal, que comprende: un generador de reglas de cuantificación para generar una regla de cuantificación basándose en una relación de una medida de energía del canal o el par de canales y una medida de energía de la señal multicanal; y un cuantificador de valores para obtener un parámetro cuantificado a partir del parámetro de entrada, utilizando la regla de cuantificación generada.

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