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1. 发明申请

WO2011029570A8 IMPROVEMENT OF AN AUDIO SIGNAL OF AN FM STEREO RADIO RECEIVER BY USING PARAMETRIC STEREO 审中-公开
标题翻译：用参数立体声改进FM立体声无线电接收机的音频信号
公开(公告)号：WO2011029570A8
公开(公告)日：2011-03-17
申请号：PCT/EP2010/005481
申请日：2010-09-07
申请人： DOLBY INTERNATIONAL AB , ENGDEGARD, Jonas , PURNHAGEN, Heiko , ROEDEN, Karl, Jonas
发明人： ENGDEGARD, Jonas , PURNHAGEN, Heiko , ROEDEN, Karl, Jonas
IPC分类号： H04S1/00 , H04S5/00 , H04H40/45 , H04B1/16 , H04H40/81
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善FM立体声无线电接收机的立体声音频信号的设备。该设备包括参数立体声（PS）参数估计阶段。参数估计级被配置为以频率变化或频率不变的方式基于立体声音频信号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，该设备包括上混阶段。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，例如，通过缩混阶段的缩混操作。 PS参数估计阶段可以是PS编码器的一部分。上混阶段可能是PS解码器的一部分。

2. 发明申请

WO2007044463A9 SYSTEM AND METHOD FOR AUTOMATIC PLUG DETECTION 审中-公开
标题翻译：用于自动插塞检测的系统和方法
公开(公告)号：WO2007044463A9
公开(公告)日：2009-06-18
申请号：PCT/US2006038974
申请日：2006-10-05
申请人： AVIOM INC , METCALF THOMAS D , CLEMENS ROBERT P
发明人： METCALF THOMAS D , CLEMENS ROBERT P
IPC分类号： H04H40/81 , H04R29/00
CPC分类号： H04L12/40117 , H04N21/4104 , H04N21/439 , H04N21/4424
摘要： A method and system for performing automatic plug detection are disclosed (Fig. 11 ). When a plug is inserted into an audio jack, the plug may be detected (step 1105). Detection may occur at power up or upon insertion. When a plug is detected, a determination may be made as to whether the plug is a stereo plug or a mono plug (step 1115). If the plug is determined to be a mono plug (step 1120), audio information may be transmitted substantially using a first audio channel, such as a left audio channel. In contrast, if the plug is determined to be a stereo plug (step 1130), audio information may be transmitted using the first audio channel and a second audio channel, such as a right audio channel.
摘要翻译：公开了用于执行自动插塞检测的方法和系统（图11）。当插头插入音频插孔时，可以检测插头（步骤1105）。检测可能会在通电或插入时发生。当检测到插头时，可以确定插头是立体声插头还是单声道插头（步骤1115）。如果插头被确定为单声道插头（步骤1120），则音频信息可以基本上使用诸如左声道的第一音频声道来传输。相反，如果插头被确定为立体声插头（步骤1130），则可以使用第一音频通道和第二音频通道（诸如右音频通道）来传输音频信息。

3. 发明申请

WO2013179100A1 STEREO AUDIO OUTPUT, ASSOCIATED APPARATUS AND METHODS 审中-公开
标题翻译：立体声音频输出，相关设备和方法
公开(公告)号：WO2013179100A1
公开(公告)日：2013-12-05
申请号：PCT/IB2012/052782
申请日：2012-06-01
申请人： NOKIA COPORATION , BRIFFETT, Neil
发明人： BRIFFETT, Neil
IPC分类号： H04S5/00 , G10L19/008 , H04H40/81
CPC分类号： H04H40/81 , G10L21/02 , H04R5/04 , H04S5/00
摘要： An apparatus comprising at least one processor, and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: enable, using a blending generator, the generation of a blended audio output signal for a received modulated stereo audio input signal. The blended audio output signal comprises respective proportions of stereo signal and pseudo-stereo signal components. The blending generator is configured to gradually vary the proportion of respective stereo signal and pseudo-stereo signal components in the blended audio output signal according to a determined quality of the received modulated stereo audio input signal.
摘要翻译：一种包括至少一个处理器和包括计算机程序代码的至少一个存储器的至少一个存储器，所述至少一个存储器和所述计算机程序代码被配置为与所述至少一个处理器一起使得所述设备至少执行以下操作：使用混合发生器，产生用于接收的调制立体声音频输入信号的混合音频输出信号。混合音频输出信号包括立体声信号和伪立体声信号分量的相应比例。混合发生器被配置为根据所接收的调制立体声音频输入信号的确定质量逐渐改变混合音频输出信号中的各个立体声信号和伪立体声信号分量的比例。

4. 发明申请

WO2012059241A1 METHOD FOR REDUCING NOISE INCLUDED IN A STEREO SIGNAL, STEREO SIGNAL PROCESSING DEVICE AND FM RECEIVER USING THE METHOD 审中-公开
标题翻译：用于减少包含在立体信号中的噪声的方法，使用该方法的立体声信号处理装置和FM接收机
公开(公告)号：WO2012059241A1
公开(公告)日：2012-05-10
申请号：PCT/EP2011/005571
申请日：2011-11-04
申请人： VAN RUMPT, Herman Wouter , SEMICONDUCTOR IDEAS TO THE MARKET (ITOM)
发明人： VAN RUMPT, Herman Wouter
IPC分类号： H04B1/16 , H04H40/81
CPC分类号： H04H40/72 , H04B1/1676 , H04B1/1684
摘要： Method for reducing noise included in a stereo reproduction signal derived from a stereo input signal characterized by the steps of: • varying stereo channel separation of said stereo reproduction signal with frequency within the frequency range of the stereo input signal in accordance with the frequency response of a filter selectivity located around a center frequency to obtain a stereo channel separation peak value at said center frequency; • at a continuing increase of said noise, decreasing the bandwidth of said filter selectivity to a predetermined non-zero bandwidth while maintaining the channel separation within the bandwidth of said filter selectivity substantially at said channel separation peak value.
摘要翻译：包括在立体声输入信号中导出的立体声再现信号中的噪声的方法，其特征在于以下步骤：根据立体声输入信号的频率响应，在立体声输入信号的频率范围内改变所述立体声再现信号的立体声声道间隔与频率的变化位于中心频率周围的滤波器选择性，以在所述中心频率处获得立体声声道分离峰值; 在所述噪声的持续增加的情况下，将所述滤波器选择性的带宽减小到预定的非零带宽，同时将所述滤波器选择带宽内的信道间隔保持在基本上在所述信道分离峰值处。

5. 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。

6. 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。

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