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公开(公告)号：US20130121500A1
公开(公告)日：2013-05-16
申请号：US13811335
申请日：2011-07-18
IPC分类号： H04R3/04
CPC分类号： H04R3/04 , H04R2217/03 , H04R2400/00
摘要： A parametric loudspeaker system comprises a pre-compensator (305) for generating a pre-compensated envelope signal by applying a pre-compensation to the input audio signal where the pre-compensation compensates for distortion of in-air demodulation of the modulated ultrasound signal. A pre-modulator (307) generates a complex base band signal generating a phase signal from the pre-compensated envelope signal using a predetermined function for determining a phase signal from an amplitude signal such that the corresponding complex signal has either suppressed negative or positive frequencies. The complex base band signal is then generated to have an amplitude corresponding to the pre-compensated envelope signal and a phase corresponding to the phase signal. A modulator (309) quadrature modulates the complex base band signal on an ultrasonic quadrature carrier and an output circuit (311) drives the ultrasound transducer (301) from the modulated signal. The invention may allow effective yet low resource pre-compensation for a suppressed or single sideband modulated modulated ultrasound signal.
摘要翻译： 参数化扬声器系统包括预补偿器（305），用于通过对输入音频信号施加预补偿来产生预补偿包络信号，其中预补偿补偿调制超声信号的空中解调失真。 预调制器（307）使用用于从振幅信号确定相位信号的预定函数产生从预补偿包络信号产生相位信号的复基带信号，使得相应的复信号具有抑制的负频率或正频率 。 然后，生成复基带信号以具有对应于预补偿包络信号的幅度和对应于相位信号的相位。 调制器（309）正交调制超声波正交载波上的复基带信号，并且输出电路（311）从调制信号驱动超声换能器（301）。 本发明可以允许抑制或单边带调制调制的超声信号的有效但低资源预补偿。
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公开(公告)号：US08811119B2
公开(公告)日：2014-08-19
申请号：US13698401
申请日：2011-05-13
IPC分类号： G01S15/08
CPC分类号： G01S15/32 , G01S7/524 , G01S7/534 , G01S15/89 , H04R3/12 , H04R2203/12 , H04R2217/03 , H04S7/301
摘要： An apparatus comprises a test signal generator (401) which generates an ultrasonic test signal by modulating an audio band test signal on an ultrasonic signal. The ultrasonic test signal is radiated from a parametric loudspeaker (403) and is demodulated by non-linearities in the air. A reflected audio signal may arise from reflections of an object, such as a wall. An audio band sensor (405) generates an audio band captured signal which comprises the demodulated reflected audio band signal. A distance circuit (407) then generates a distance estimate for the distance from the parametric loudspeaker (403) to the object in response to a comparison of the audio band captured signal and the audio band test signal. Specifically two signals may be correlated to determine a delay corresponding to the full path length. Based on the distance estimates an audio environment may be estimated and a sound system may be adapted accordingly.
摘要翻译： 一种装置包括测试信号发生器（401），其通过调制超声波信号上的音频带测试信号来产生超声测试信号。 超声波测试信号从参数化扬声器（403）辐射，并被空气中的非线性解调。 反射的音频信号可能来自诸如墙壁的物体的反射。 音频带传感器（405）产生包括解调的反射音频信号的音频带捕获信号。 然后，距离电路（407）响应于音频带捕获信号和音频带测试信号的比较，产生距离参数扬声器（403）到对象的距离的距离估计。 具体地说，两个信号可以相关联以确定对应于全路径长度的延迟。 基于距离估计，可以估计音频环境并且可以相应地调整声音系统。
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公开(公告)号：US20120076306A1
公开(公告)日：2012-03-29
申请号：US13375010
申请日：2010-05-31
IPC分类号： H04R5/00
CPC分类号： H04S3/002 , H04R3/14 , H04R2217/03 , H04S7/301 , H04S2420/05
摘要： A surround sound system comprises a receiver (301) for receiving a multichannel spatial signal that comprises at least one surround channel. A directional ultrasound transducer (305) is used for emitting ultrasound towards a surface to reach a listening position (111) via a reflection of the surface. The ultrasound signal may specifically reach the listening position from the side, above or behind of a nominal listener. A first drive unit (303) generates a drive signal for the directional ultrasound transducer (301) from the surround channel. The use of an ultrasound transducer for providing the surround sound signal provides an improved spatial experience while allowing the speaker to be located e.g. to the front of the user. In particular, an ultrasound beam is much narrower and well defined than conventional audio beams and can accordingly better be directed to provide the desired reflections. In some scenarios, the ultrasound transducer (305) may be supplemented by an audio range loudspeaker (309).
摘要翻译： 环绕声系统包括用于接收包括至少一个环绕声道的多声道空间信号的接收器（301）。 定向超声换能器（305）用于经由表面的反射朝向表面发射超声波以达到收听位置（111）。 超声信号可以从名义收听者的一侧，上方或后面特定地到达聆听位置。 第一驱动单元（303）从环绕声道产生用于定向超声波换能器（301）的驱动信号。 使用超声波换能器来提供环绕声信号提供了改进的空间体验，同时允许扬声器被定位。 到用户的前面。 特别地，超声波波束比常规音频波束窄得多和明确，因此可以更好地被引导以提供期望的反射。 在一些情况下，超音波换能器（305）可以由音频范围扬声器（309）补充。
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公开(公告)号：US09078062B2
公开(公告)日：2015-07-07
申请号：US13811335
申请日：2011-07-18
CPC分类号： H04R3/04 , H04R2217/03 , H04R2400/00
摘要： A parametric loudspeaker system comprises a pre-compensator (305) for generating a pre-compensated envelope signal by applying a pre-compensation to the input audio signal where the pre-compensation compensates for distortion of in-air demodulation of the modulated ultrasound signal. A pre-modulator (307) generates a complex base band signal generating a phase signal from the pre-compensated envelope signal using a predetermined function for determining a phase signal from an amplitude signal such that the corresponding complex signal has either suppressed negative or positive frequencies. The complex base band signal is then generated to have an amplitude corresponding to the pre-compensated envelope signal and a phase corresponding to the phase signal. A modulator (309) quadrature modulates the complex base band signal on an ultrasonic quadrature carrier and an output circuit (311) drives the ultrasound transducer (301) from the modulated signal. The invention may allow effective yet low resource pre-compensation for a suppressed or single sideband modulated modulated ultrasound signal.
摘要翻译： 参数化扬声器系统包括预补偿器（305），用于通过对输入音频信号施加预补偿来产生预补偿包络信号，其中预补偿补偿调制超声信号的空中解调失真。 预调制器（307）使用用于从振幅信号确定相位信号的预定函数产生从预补偿包络信号产生相位信号的复基带信号，使得相应的复信号具有抑制的负频率或正频率 。 然后，生成复基带信号以具有对应于预补偿包络信号的幅度和对应于相位信号的相位。 调制器（309）正交调制超声波正交载波上的复基带信号，并且输出电路（311）从调制信号驱动超声换能器（301）。 本发明可以允许抑制或单边带调制调制的超声信号的有效但低资源预补偿。
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公开(公告)号：US08837743B2
公开(公告)日：2014-09-16
申请号：US13375010
申请日：2010-05-31
CPC分类号： H04S3/002 , H04R3/14 , H04R2217/03 , H04S7/301 , H04S2420/05
摘要： A surround sound system comprises a receiver (301) for receiving a multichannel spatial signal that comprises at least one surround channel. A directional ultrasound transducer (305) is used for emitting ultrasound towards a surface to reach a listening position (111) via a reflection of the surface. The ultrasound signal may specifically reach the listening position from the side, above or behind of a nominal listener. A first drive unit (303) generates a drive signal for the directional ultrasound transducer (301) from the surround channel. The use of an ultrasound transducer for providing the surround sound signal provides an improved spatial experience while allowing the speaker to be located e.g. to the front of the user. In particular, an ultrasound beam is much narrower and well defined than conventional audio beams and can accordingly better be directed to provide the desired reflections. In some scenarios, the ultrasound transducer (305) may be supplemented by an audio range loudspeaker (309).
摘要翻译： 环绕声系统包括用于接收包括至少一个环绕声道的多声道空间信号的接收器（301）。 定向超声换能器（305）用于经由表面的反射朝向表面发射超声波以达到收听位置（111）。 超声信号可以从名义收听者的一侧，上方或后面特定地到达聆听位置。 第一驱动单元（303）从环绕通道产生用于定向超声波换能器（301）的驱动信号。 使用超声波换能器来提供环绕声信号提供了改进的空间体验，同时允许扬声器被定位。 到用户的前面。 特别地，超声波波束比常规音频波束窄得多和明确，因此可以更好地被引导以提供期望的反射。 在一些情况下，超音波换能器（305）可以由音频范围扬声器（309）补充。
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公开(公告)号：US20130064042A1
公开(公告)日：2013-03-14
申请号：US13698401
申请日：2011-05-13
IPC分类号： G01S15/08
CPC分类号： G01S15/32 , G01S7/524 , G01S7/534 , G01S15/89 , H04R3/12 , H04R2203/12 , H04R2217/03 , H04S7/301
摘要： An apparatus comprises a test signal generator (401) which generates an ultrasonic test signal by modulating an audio band test signal on an ultrasonic signal. The ultrasonic test signal is radiated from a parametric loudspeaker (403) and is demodulated by non-linearities in the air. A reflected audio signal may arise from reflections of an object, such as a wall. An audio band sensor (405) generates an audio band captured signal which comprises the demodulated reflected audio band signal. A distance circuit (407) then generates a distance estimate for the distance from the parametric loudspeaker (403) to the object in response to a comparison of the audio band captured signal and the audio band test signal. Specifically two signals may be correlated to determine a delay corresponding to the full path length. Based on the distance estimates an audio environment may be estimated and a sound system may be adapted accordingly.
摘要翻译： 一种装置包括测试信号发生器（401），其通过调制超声波信号上的音频带测试信号来产生超声测试信号。 超声波测试信号从参数化扬声器（403）辐射，并被空气中的非线性解调。 反射的音频信号可能来自诸如墙壁的物体的反射。 音频带传感器（405）产生包括解调的反射音频信号的音频带捕获信号。 然后，距离电路（407）响应于音频带捕获信号和音频带测试信号的比较，产生距离参数扬声器（403）到对象的距离的距离估计。 具体地说，两个信号可以相关联以确定对应于全路径长度的延迟。 基于距离估计，可以估计音频环境并且可以相应地调整声音系统。
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公开(公告)号：US09752568B2
公开(公告)日：2017-09-05
申请号：US13139822
申请日：2009-12-08
IPC分类号： F04B45/04 , F04B45/047 , F04B49/00 , F04B35/04 , G06F3/01
CPC分类号： F04B45/04 , A63F2300/302 , F04B35/04 , F04B45/043 , F04B45/047 , F04B49/005 , G06F3/016
摘要： An apparatus for use as an output device of a user interface to an information processing system includes at least one device for generating a synthetic jet. The device is capable of producing outputs with different modalities. Examples of different modalities that are possible include airflows, vibration and sound.
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公开(公告)号：US09649470B2
公开(公告)日：2017-05-16
申请号：US13825022
申请日：2011-09-14
CPC分类号： A61M21/02 , A61M21/00 , A61M2021/0022 , A61M2021/0088 , A61M2205/10 , A61M2205/50 , A63B23/185
摘要： A breath pacing apparatus and a method for pacing a respiration of a person include a haptic output unit with a variable haptically perceivable feature. The haptic output unit is configured to change the haptically perceivable feature periodically according to a sequence of desired respiration cycles, where a characteristic of the change of the haptically perceivable feature is related to a length of the respiration cycles in the sequence of desired respiration cycles.
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公开(公告)号：US09132333B2
公开(公告)日：2015-09-15
申请号：US12993861
申请日：2009-05-29
CPC分类号： A63B71/0686 , A61B5/02405 , A61B5/486 , A61N1/36078 , A61N1/3611 , A63B23/185 , A63B24/0075 , A63B2071/0625 , A63B2220/807 , A63B2230/06 , A63B2230/062 , A63B2230/50
摘要： A method of maintaining a state in a subject (12) comprises generating a pacing signal (20) at a first frequency, presenting to the subject an output based upon the generated pacing signal, measuring one or more physiological parameters of the subject, detecting that the measured parameter(s) conform to a desired state in the subject, and either removing the presentation to the subject of the output based upon the generated pacing signal, or generating a new pacing signal at a second frequency, and presenting to the subject an output based upon the generated new pacing signal. The method can further comprise, prior to the detecting that the measured parameter(s) conform to a desired state in the subject, adjusting the pacing signal according to feedback from the measured parameter(s). In a preferred embodiment, the method also further comprises detecting that the measured parameter(s) no longer conform to a desired state in the subject, and presenting to the subject an output based upon the original generated pacing signal.
摘要翻译： 维持对象（12）中的状态的方法包括以第一频率生成起搏信号（20），基于产生的起搏信号向对象呈现输出，测量对象的一个或多个生理参数，检测该 所测量的参数符合所述对象中的期望状态，并且基于产生的起搏信号去除所述输出的对象的呈现，或者以第二频率生成新的起搏信号，并向所述对象呈现 基于生成的新起搏信号的输出。 该方法还可以包括在检测到所测量的参数符合受试者期望的状态之前，根据来自所测量的参数的反馈来调整起搏信号。 在优选实施例中，该方法还包括检测所测量的参数不再符合受检者的期望状态，并且基于原始产生的起搏信号向受检者呈现输出。
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公开(公告)号：US08588449B2
公开(公告)日：2013-11-19
申请号：US13262927
申请日：2010-04-06
IPC分类号： H04R25/00
CPC分类号： H04R9/022
摘要： An audio driver including a diaphragm with a first side and a second side. The diaphragm is coupled to a transducer element on the second side and is arranged to radiate sound. The transducer element converts an electrical input signal into movement of the diaphragm. The diaphragm is arranged such that a part of the diaphragm at least partly forms a cavity at the second side of an air conduit is coupled to the cavity. The air conduit has a first opening into the cavity and a second opening outside of the cavity. The air conduit and cavity form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.
摘要翻译： 一种音频驱动器，包括具有第一侧和第二侧的隔膜。 隔膜耦合到第二侧上的换能器元件并被布置成辐射声音。 换能器元件将电输入信号转换成膜片的运动。 隔膜被布置成使得至少部分地在空气管道的第二侧形成空腔的隔膜的一部分联接到空腔。 空气管道具有进入空腔的第一开口和空腔外部的第二开口。 空气导管和空腔形成谐振器，其谐振频率小于音频驱动器的自由空气声共振频率的一半。
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