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1.发明公开IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 有权改进音频信号的FM立体声收音机接收器的使用参数STEREO
公开(公告)号：EP2476269A1
公开(公告)日：2012-07-18
申请号：EP10751815.1
申请日：2010-09-07
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.
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2.发明授权SMOOTH CONFIGURATION SWITCHING FOR MULTICHANNEL AUDIO RENDERING BASED ON A VARIABLE NUMBER OF RECEIVED CHANNELS 有权一种信道数目可变的多路音频播放软件配置更改接收的
公开(公告)号：EP2862165B1
公开(公告)日：2017-03-08
申请号：EP13728755.3
申请日：2013-06-14
发明人： PURNHAGEN, Heiko , SEHLSTROM, Leif , ROEDEN, Karl, Jonas , KJOERLING, Kristofer , VILLEMOES, Lars
IPC分类号： G10L19/008
CPC分类号： G10L19/008 , G10L19/0017 , G10L19/18 , H04S3/008 , H04S2400/03 , H04S2420/03
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3.发明授权IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 有权改进音频信号的FM立体声收音机接收器的使用参数STEREO
公开(公告)号：EP2476269B1
公开(公告)日：2016-03-16
申请号：EP10751815.1
申请日：2010-09-07
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.
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4.发明公开SMOOTH CONFIGURATION SWITCHING FOR MULTICHANNEL AUDIO RENDERING BASED ON A VARIABLE NUMBER OF RECEIVED CHANNELS 有权一种信道数目可变的多路音频播放软件配置更改接收的
公开(公告)号：EP2862165A2
公开(公告)日：2015-04-22
申请号：EP13728755.3
申请日：2013-06-14
发明人： PURNHAGEN, Heiko , SEHLSTROM, Leif , ROEDEN, Karl, Jonas , KJOERLING, Kristofer , VILLEMOES, Lars
IPC分类号： G10L19/008
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（100）表示音频信号或者通过参数编码或正离散编码信道的输入信号（A）的基础上，正声道音频信号的重构。 一个核心信号的基础上，参数解码前进和混合参数（a）控制供给与来自缩混级（140）的下混合信号的空间合成阶段（150），在所有。 选择器（170）控制所述解码系统的组件，在稳定状态参数和离散解码模式和合成之间的转变。 缩混阶段实现了对基于n沟道信号的降混信号的突起，n沟道输入信号或信号芯的任填充为中性值。 缩混阶段是在每个时间帧活性，其中所述输入信号由darstellt参数编码和在至少在参数化编码的时间框架的每一集的最后时间帧之后的第一时间帧的音频信号。
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