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公开(公告)号：US08948410B2
公开(公告)日：2015-02-03
申请号：US13139797
申请日：2009-12-11
IPC分类号： G10K11/16 , G10K11/178
CPC分类号： G10K11/178 , G10K2210/3026 , G10K2210/3056
摘要： A noise canceling system comprises a microphone generating a captured signal and a sound transducer radiating a sound canceling audio signal in the audio environment. A feedback path from the microphone to the sound transducer includes a non-adaptive canceling filter and a variable gain and receives the captured signal and generates a drive signal for the sound transducer. A gain detector determines a secondary path gain for at least part of a secondary path of a feedback loop. The secondary path may include the microphone, the sound transducer, and the acoustic path therebetween but does not include the non-adaptive canceling filter or the variable gain. A gain controller adjusts the in of the variable gain in response to the secondary path gain. The system use simple gain estimation and control to efficiently compensate for variations in the secondary path to provide improved stability and noise canceling performance.
摘要翻译： 噪声消除系统包括产生捕获信号的麦克风和在音频环境中辐射声音消除音频信号的声音传感器。 从麦克风到声换能器的反馈路径包括非自适应消除滤波器和可变增益，并且接收所捕获的信号并产生声换能器的驱动信号。 增益检测器确定反馈回路的次级路径的至少一部分的次级路径增益。 辅助路径可以包括麦克风，声音换能器和它们之间的声学路径，但不包括非自适应抵消滤波器或可变增益。 增益控制器根据辅助路径增益来调节可变增益的输入。 该系统使用简单的增益估计和控制来有效地补偿次级路径的变化，以提供改进的稳定性和降噪性能。
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公开(公告)号：US20130271591A1
公开(公告)日：2013-10-17
申请号：US13990809
申请日：2012-01-04
IPC分类号： H04N7/18
CPC分类号： H04N7/18 , A61B5/0064 , A61B5/02438 , A61B5/7207
摘要： The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream (76, 78, 80, 82) derivable from electromagnetic radiation (14) emitted or reflected by an object (11) is received and a plurality of characteristic index elements (50) varying over time can be extracted therefrom. The index elements (50) comprise physiological information (48) indicative of at least one at least partially periodic vital signal (12), and a disturbing signal component (58). For eliminating the disturbing signal component (58) to a great extent, the characteristic index elements (50) can be projected to a disturbance-reduced index element (64) having a distinct orientation in relation to a presumed orientation of the disturbing signal component (58). The disturbance-reduced index element (64) is chosen so as to reflect a dominant main orientation and length of the disturbing signal component (58) over time. Consequently, the mainly genuine physiological information (48) extracted from the data stream (76, 78, 80, 82) in this way can be utilized for determining the at least one at least partially periodic vital signal (12).
摘要翻译： 本发明涉及一种从检测到的特征信号中提取信息的装置和方法。 接收从物体（11）发射或反射的电磁辐射（14）可导出的数据流（76,78,80,82），并且可以从中提取随时间变化的多个特征索引元件（50）。 索引元件（50）包括指示至少一个至少部分周期性重要信号（12）的生理信息（48）和干扰信号分量（58）。 为了在很大程度上消除干扰信号分量（58），可以将特征索引元件（50）投影到具有相对于干扰信号分量的推测取向的不同取向的干扰减小指数元素（64） 58）。 扰动减小指数元素（64）被选择为反映干扰信号分量（58）随时间的主要主要取向和长度。 因此，以这种方式从数据流（76,78,80,82）提取的主要真实的生理信息（48）可用于确定至少一个至少部分周期性的重要信号（12）。
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公开(公告)号：US07864631B2
公开(公告)日：2011-01-04
申请号：US11916552
申请日：2006-06-07
IPC分类号： G01S3/80
CPC分类号： H04S7/301 , H04R2205/024 , H04R2400/01
摘要： The invention describes a method of determining the distance (d12) between two loudspeakers (L1, L2), wherein the method comprises the steps of providing a test signal (N), combining the test signal (N) with a sound signal (S) to give a combined signal (SN) in which the test signal is imperceptible to a listener (4), and issuing the combined signal (SN) by means of a first loudspeaker (L1). The combined signal (SN) is detected by a detecting means (M2) associated with the second loudspeaker (L2) and processed to obtain an acoustic impulse response (IR), which is used to determine the distance (d1,2) between the first loudspeaker (L1) and the second loudspeaker (L2). The invention further describes a system (1) for determining the distance (d1,2) between two loudspeakers (L1, L2) and an acoustic sound system, comprising a number of loudspeakers (L1, L2, . . . , Lk) for reproduction of multi-channel sound, and a system (1) for determining the distances (d1,2, d2,3, . . . , dk-i,k) between the loudspeakers (L1, L2, . . . , Lk) in order to automatically configure the loudspeakers (L1, L2, . . . , Lk) for that acoustic sound system.
摘要翻译： 本发明描述了一种确定两个扬声器（L1，L2）之间的距离（d12）的方法，其中该方法包括以下步骤：提供测试信号（N），将测试信号（N）与声音信号（S）相结合， 给出其中测试信号对于听众（4）不可察觉的组合信号（SN），以及借助于第一扬声器（L1）发出组合信号（SN）。 组合信号（SN）由与第二扬声器（L2）相关联的检测装置（M2）检测并被处理以获得声学脉冲响应（IR），其用于确定第一和第二扬声器之间的距离（d1,2） 扬声器（L1）和第二扬声器（L2）。 本发明还描述了一种用于确定两个扬声器（L1，L2）和声学声音系统之间的距离（d1,2）的系统（1），包括用于再现的多个扬声器（L1，L2，...，Lk） 和用于确定扬声器（L1，L2，...，Lk）之间的距离（d1,2，d2,3，...，dk-i，k）的系统（1） 为了自动配置声学系统的扬声器（L1，L2，...，Lk）。
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公开(公告)号：US20080215605A1
公开(公告)日：2008-09-04
申请号：US11995341
申请日：2006-07-10
IPC分类号： G06F17/30
CPC分类号： G06T1/0035 , G06T2201/0052 , G06T2201/0053 , H04N19/102 , H04N19/152 , H04N19/174 , H04N19/176 , H04N19/184 , H04N19/467 , H04N19/60 , H04N21/8358
摘要： Watermarking schemes are known that embed the watermark directly in the MPEG domain. A requirement for these algorithms is that the watermarked MPEG stream does not increase in size. Therefore, a bit rate controller allows a modification of a DCT coefficient only if such modification does not increase the stream size. It happens frequently that DCT coefficients are skipped because of this requirement. As a direct consequence, the watermark energy is smaller than desired and therefore the watermark is less robust. This invention exploits the fact that stuffing bits have often already been added to the stream by the MPEG encoder. The embedder is arranged to analyse the stream so as to find out how many stuffing bits there are at the end of the slice. The embedder can then embed the watermark immediately at the beginning of a slice. As a direct result, the watermark energy will increase and therefore the watermark will be more robust.
摘要翻译： 已知水印方案是将水印直接嵌入到MPEG域中。 这些算法的要求是水印的MPEG流的大小不增加。 因此，仅当这种修改不增加流大小时，比特率控制器允许修改DCT系数。 由于这个要求，DCT系数被频繁地跳过。 作为直接结果，水印能量小于期望值，因此水印的鲁棒性较差。 本发明利用了MPEG编码器经常已将填充比特添加到流中的事实。 嵌入器被布置成分析流，以便找出在切片末端有多少填充位。 然后，嵌入器可以立即将水印嵌入切片的开头。 作为直接结果，水印能量将增加，因此水印将更加鲁棒。
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公开(公告)号：US09384727B2
公开(公告)日：2016-07-05
申请号：US13387763
申请日：2010-07-30
IPC分类号： G10K11/16 , G10K11/178
CPC分类号： G10K11/1788 , G10K11/178
摘要： The present invention refers to an active sound reduction system and method for attenuation of sound emitted by a primary sound source, especially for attenuation of snoring sounds emitted by a human being. This system comprises a primary sound source, at least one speaker as a secondary sound source for producing an attenuating sound to be superposed with the sound emitted by said primary sound source, a reference microphone for receiving sound from said primary sound source, and at least one error microphone being allocated to each speaker to form a speaker/microphone pair. The at least one error microphone is provided as a directional microphone pointing at its allocated speaker to receive residual sound resulting from the superposition of the sounds from the primary sound source and the corresponding speaker. The error microphone and speaker of at least one speaker/microphone pair and the primary sound source are arranged substantially collinear. A control unit is provided to receive an output reference signal of the reference microphone representing the sound received by the reference microphone and an output error signal of the at least one error microphone representing the sound received by the at least one error microphone and to calculate a control signal for the speaker from the output reference signal and the output error signal.
摘要翻译： 本发明涉及一种用于衰减由主声源发出的声音的主动减声系统和方法，特别是用于衰减由人发射的打鼾音。 该系统包括主声源，至少一个扬声器作为次声源，用于产生与所述主声源发射的声音叠加的衰减声音，用于从所述主声源接收声音的参考麦克风，并且至少 一个错误麦克风被分配给每个扬声器以形成扬声器/麦克风对。 提供至少一个误差麦克风作为指向其分配的扬声器的定向麦克风，以接收由来自主声源和相应扬声器的声音叠加而产生的残留声音。 至少一个扬声器/麦克风对和主声源的误差麦克风和扬声器基本上共线布置。 提供控制单元以接收表示由参考麦克风接收的声音的参考麦克风的输出参考信号，以及表示由至少一个误差麦克风接收的声音的至少一个误差麦克风的输出误差信号，并计算一个 来自输出参考信号的扬声器的控制信号和输出误差信号。
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公开(公告)号：US09241674B2
公开(公告)日：2016-01-26
申请号：US14239798
申请日：2012-09-12
CPC分类号： A61B5/7235 , A61B5/0075 , A61B5/02416 , A61B5/14551 , G06K9/2018 , G06K9/624 , G06T7/0016 , G06T2207/30076
摘要： The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream (26) derivable from electromagnetic radiation (14) emitted or reflected by an object (12) is received. The data stream (26) comprises a continuous or discrete time-based characteristic signal ( ; 98) comprising at least two main components (92a, 92b, 92c) related to respective complementary channels (90a, 90b, 90c) of a signal space (88). The characteristic signal ( ; 98) is mapped to a defined component representation ( , , , ; , ) under consideration of a substantially linear algebraic signal composition model so as to specify a linear algebraic equation. The linear algebraic equation is at least partially solved under consideration of an at least approximate estimation of specified signal portions ( , , ). Consequently, an expression highly indicative of the at least one at least partially periodic vital signal (20) can be derived from the linear algebraic equation.
摘要翻译： 本发明涉及一种从检测到的特征信号中提取信息的装置和方法。 接收由物体（12）发射或反射的电磁辐射（14）可导出的数据流（26）。 数据流（26）包括连续或离散的基于时间的特征信号（; 98），其包括与信号空间的相应互补通道（90a，90b，90c）相关的至少两个主要部件（92a，92b，92c） 88）。 考虑到基本线性代数信号组合模型，特征信号（; 98）被映射到定义的分量表示（，，，，），以便指定线性代数方程。 在考虑指定信号部分（，，）的至少近似估计的情况下，至少部分地求解线性代数方程。 因此，可以从线性代数方程导出高度指示至少一个至少部分周期性生命信号（20）的表达。
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公开(公告)号：US20120186271A1
公开(公告)日：2012-07-26
申请号：US13497256
申请日：2010-09-20
申请人： Robertus Leonardus Tousain , Ronaldus Maria Aarts , Adriaan Johan Van Leest , Daniel Anton Benoy
发明人： Robertus Leonardus Tousain , Ronaldus Maria Aarts , Adriaan Johan Van Leest , Daniel Anton Benoy
IPC分类号： F25B21/00
CPC分类号： F04F7/00 , G10K11/178
摘要： The present invention relates to an acoustic cooling system (1) arranged for cooling by generating sound waves, said system (1) comprising a transducer (2) and a control unit (6) configured to generate a drive signal (S1) for exciting said transducer (2), wherein said drive signal is a multi-harmonic drive signal comprising at least one higher harmonic (A2-A5) selected to reduce the presence of at least one corresponding higher harmonic (B2-B5) comprised in the sound waves. The system is advantageous in that noise-reduction can be achieved without the need of incorporating a second transducer, thereby enabling a compact acoustic cooling system at a low cost.
摘要翻译： 本发明涉及一种用于通过产生声波进行冷却的声学冷却系统（1），所述系统（1）包括换能器（2）和控制单元（6），该控制单元（6）被配置为产生驱动信号（S1） 换能器（2），其中所述驱动信号是包括被选择以减少包含在声波中的至少一个对应的高次谐波（B2-B5）的存在的至少一个高次谐波（A2-A5）的多谐波驱动信号。 该系统的优点在于可以实现降噪，而不需要并入第二换能器，从而以低成本实现紧凑的声学冷却系统。
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公开(公告)号：US20080152189A1
公开(公告)日：2008-06-26
申请号：US11911022
申请日：2006-04-12
IPC分类号： G06K9/00
CPC分类号： G06T1/0028 , G06T2201/0202
摘要： A method of embedding data such as a watermark in a two dimensional information signal such as an image. The method comprises filtering a portion of the information signal using a two dimensional filter. In order to reduce the visibility of the watermark in sharp and elongated edges, the filter is configured to apply a net weighting of approximately zero to the portion of the information signal in at least two non parallel directions. Preferably, the two directions are mutually orthogonal, e.g. horizontal and vertical. The thus filtered signal is used to locally control the watermark embedding depth (energy).
摘要翻译： 将诸如水印之类的数据嵌入诸如图像的二维信息信号中的方法。 该方法包括使用二维滤波器对信息信号的一部分进行滤波。 为了在锐利和细长的边缘中降低水印的可视性，滤波器被配置为在至少两个非平行方向上对信息信号的部分施加大约零的净加权。 优选地，两个方向是相互正交的，例如 水平和垂直。 这样滤波的信号用于本地控制水印嵌入深度（能量）。
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9.发明授权公开(公告)号：US09124777B2
公开(公告)日：2015-09-01
申请号：US13990809
申请日：2012-01-04
CPC分类号： H04N7/18 , A61B5/0064 , A61B5/02438 , A61B5/7207
摘要： The present invention relates to a device and a method for extracting information from detected characteristic signals. A data stream (76, 78, 80, 82) derivable from electromagnetic radiation (14) emitted or reflected by an object (11) is received and a plurality of characteristic index elements (50) varying over time can be extracted therefrom. The index elements (50) comprise physiological information (48) indicative of at least one at least partially periodic vital signal (12), and a disturbing signal component (58). For eliminating the disturbing signal component (58) to a great extent, the characteristic index elements (50) can be projected to a disturbance-reduced index element (64) having a distinct orientation in relation to a presumed orientation of the disturbing signal component (58). The disturbance-reduced index element (64) is chosen so as to reflect a dominant main orientation and length of the disturbing signal component (58) over time. Consequently, the mainly genuine physiological information (48) extracted from the data stream (76, 78, 80, 82) in this way can be utilized for determining the at least one at least partially periodic vital signal (12).
摘要翻译： 本发明涉及一种从检测到的特征信号中提取信息的装置和方法。 接收从物体（11）发射或反射的电磁辐射（14）可导出的数据流（76,78,80,82），并且可以从中提取随时间变化的多个特征索引元件（50）。 索引元件（50）包括指示至少一个至少部分周期性重要信号（12）的生理信息（48）和干扰信号分量（58）。 为了在很大程度上消除干扰信号分量（58），可以将特征指标元素（50）投影到相对于干扰信号分量的推测取向具有不同取向的干扰减小指数元素（64） 58）。 扰动减小指数元素（64）被选择为反映干扰信号分量（58）随时间的主要主要取向和长度。 因此，以这种方式从数据流（76,78,80,82）提取的主要真实的生理信息（48）可用于确定至少一个至少部分周期性的重要信号（12）。
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10.发明申请VIDEO CODING AND DECODING DEVICES AND METHODS PRESERVING PPG RELEVANT INFORMATION 审中-公开视频编码和解码设备和保存PPG相关信息的方法公开(公告)号：US20130272393A1
公开(公告)日：2013-10-17
申请号：US13993699
申请日：2011-12-21
IPC分类号： H04N7/26
摘要： The present invention relates to a video encoding device (10) for encoding video data and a corresponding video decoding device, wherein during decoding PPG relevant information shall be preserved. For this purpose the video coding device (10) comprises a first encoder (20) for encoding input video data (100) according to a first encoding scheme and outputting first coded video data (120) having a lower quality than the input video data, and a second encoder (30) for encoding input video data (100) according to a second encoding scheme preserving PPG-relevant information and outputting second coded video data (130).
摘要翻译： 本发明涉及用于对视频数据进行编码的视频编码装置（10）和对应的视频解码装置，其中在解码期间应保留相关信息。 为此，视频编码装置（10）包括：第一编码器（20），用于根据第一编码方案对输入视频数据（100）进行编码，并输出质量低于输入视频数据的第一编码视频数据（120） 以及第二编码器（30），用于根据保存PPG相关信息的第二编码方案对输入视频数据（100）进行编码并输出第二编码视频数据（130）。
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