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公开(公告)号：US07088830B2
公开(公告)日：2006-08-08
申请号：US10101426
申请日：2002-03-18
IPC分类号： H04B3/00
CPC分类号： F41H13/0081 , G10K15/02 , H04B3/56 , H04R27/00 , H04R27/04 , H04R2217/03
摘要： A sound emitting device for providing at least one new sonic or subsonic frequency as a by-product of emitting a waveform of at least two ultrasonic frequencies whose difference in value corresponds to the desired new sonic or subsonic frequency. The device includes a parametric emitting perimeter or plurality of emitter segments positioned around a central open section. This open section is structured with a diagonal width greater than a cross-sectional diagonal of the parametric emitting perimeter. An ultrasonic frequency signal source and sonic/subsonic frequency generator are coupled together to a modulating circuit for mixing an ultrasonic frequency signal with an electrical signal corresponding to the at least one new sonic or subsonic frequency. The modulator output is coupled to the emitting perimeter which comprises ultrasonic frequency emitting material for propagating the mixed waveform into air for demodulating the waveform to generate the at least one new sonic or subsonic frequency.
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公开(公告)号：US20090116660A1
公开(公告)日：2009-05-07
申请号：US11921822
申请日：2006-02-09
CPC分类号： H04R27/00 , H04R2217/03
摘要： Parametric sound reproduction in high-intensity audio signaling, for example in hailing and warning at relatively large distances, is disclosed in one example by producing a primary audio signal in the audio frequency range, and producing a secondary audio signal in the audio frequency range by modulation of the primary audio signal, wherein the primary signal is chosen to enable an improved effect, for example one of directional reproduction, exploiting greater sensitivity of human hearing, exploiting an efficient or maximum intensity frequency range of a transducer used to reproduce the audio signals, and another parameter effecting distance, intelligibility, or intensity of an audio signal.
摘要翻译： 在一个示例中，通过在音频范围中产生主音频信号，并且通过在音频频率范围内产生辅助音频信号，从而在音频频率范围内产生辅助音频信号，例如在高强度音频信号中的参数声音再现，例如在相对较大距离的呼叫和警告中 主要音频信号的调制，其中选择主信号以实现改进的效果，例如定向再现之一，利用人类听觉更大的灵敏度，利用用于再现音频信号的换能器的有效或最大强度频率范围 ，以及影响音频信号的距离，清晰度或强度的另一参数。
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公开(公告)号：US06393129B1
公开(公告)日：2002-05-21
申请号：US09374813
申请日：1999-08-16
IPC分类号： H04R2500
CPC分类号： H04R19/00 , H04R19/02 , H04R23/02 , H04R2217/03
摘要： An electroacoustic transducer which includes at least one stator member with an operating surface positioned adjacent to an emitter diaphragm. The stator member is comprised of at least one stiff sheet of paper having perforations for acoustic transparency. The stator also includes a means to develop electrical conductivity and to receive an applied voltage. An emitter diaphragm is suspended adjacent to and spaced a sufficient distance from the operating surface of the stator member to enable diaphragm oscillation in response to an applied signal voltage. This arrangement permits diaphragm movement within at least one emitter section without creating restrictive contact on the operating surface of the stator member. The diaphragm may be composed of paper with electrical conductivity sufficient to receive an acoustic signal voltage from a voltage source and to vibrate as an acoustic emitter with respect to forces applied at the stator member. Alternatively, the stator member may be of conventional construction, and combined with an emitter diaphragm constructed of a paper composition. Electrical contacts are also positioned on the stator member and the emitter diaphragm for coupling to appropriate voltage sources.
摘要翻译： 一种电声换能器，其包括至少一个具有邻近发射器隔膜定位的操作表面的定子构件。 定子构件由至少一张具有用于声学透明度的穿孔的刚性纸片构成。 定子还包括显影电导率和接收施加电压的装置。 发射器隔膜与定子构件的操作表面相邻并且间隔开足够的距离，以响应于施加的信号电压使振动膜振动。 这种布置允许膜片在至少一个发射器部分内移动，而不会在定子构件的操作表面上产生限制性接触。 隔膜可以由具有足以从电压源接收声信号电压并且相对于施加在定子构件上的力作为声发射器振动的导电性的纸构成。 或者，定子构件可以是常规构造，并且与由纸组合物构成的发射器隔膜组合。 电触点也位于定子构件和发射器隔膜上，用于耦合到适当的电压源。
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公开(公告)号：US07298853B2
公开(公告)日：2007-11-20
申请号：US10476933
申请日：2002-05-07
IPC分类号： H04B3/00
CPC分类号： H04S1/002 , G10H1/0091 , G10H2210/301 , G10K15/02 , H04B11/00 , H04R5/02 , H04R2217/03 , H04S3/00 , H04S3/002
摘要： A system for generating at least one remote virtual speaker location in connection with at least a partial reflective environment (12, 12, 14 or 15) in combination with an audio speaker for creating multiple sound effects including a virtual sound source from the reflective environment which is perceived by a listener (53) as an original sound source, by generating a primary direct audio output by emitting audio compression waves toward a listener, and generating a secondary indirect audio output from at least one virtual speaker (24, 25 or 26) remote from the audio speakers, by emitting ultrasonic sound from at least one parametric speaker (20, 21 or 22) associated with the audio speakers and oriented toward at least one reflective environment which is remote from the audio speakers.
摘要翻译： 一种用于与至少一个部分反射环境（12,12,14或15）结合的音频扬声器产生至少一个远程虚拟扬声器位置的系统，用于产生包括来自反射环境的虚拟声源的多个声音效果， 由收听者（53）感知为原始声源，通过向收听者发射音频压缩波并且从至少一个虚拟扬声器（24,25或26）产生次要间接音频输出，产生主要直接音频输出， 远离音频扬声器，通过从与音频扬声器相关联的至少一个参数扬声器（20,21或22）发射超声波，并且朝向远离音频扬声器的至少一个反射环境。
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公开(公告)号：US06925187B2
公开(公告)日：2005-08-02
申请号：US09819301
申请日：2001-03-27
CPC分类号： G10K11/025
摘要： A sonic emitter, horn array with enhanced emitter-to-air acoustic coupling, with particular application to ultrasonic frequencies. The emitter comprises a plate support member having opposing first and second faces separated by an intermediate plate body. The plate body includes a plurality of conduits configured as an array of acoustic horns, with a small throat opening at the first face and an intermediate horn section which diverges to a broad mouth opening at the second face. An emitter membrane is positioned in direct contact with the first face and extends across the small throat openings. The emitter membrane is biased for (i) applying tension to the membrane extending across the throat openings and (ii) displacing the membrane into a non-planar configuration.
摘要翻译： 声发射器，具有增强的发射到空气声耦合的喇叭阵列，特别适用于超声波频率。 发射器包括板支撑构件，其具有由中间板体分隔开的相对的第一和第二面。 板体包括多个导管，其构造为声喇叭阵列，在第一面处具有小的喉部开口，并且中间喇叭部分在第二面处分散到宽口开口。 发射器膜定位成与第一面直接接触并且延伸穿过小喉部开口。 发射体膜被偏压以便（i）向延伸穿过喉部开口的膜施加张力，和（ii）将膜移位成非平面构型。
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公开(公告)号：US06850623B1
公开(公告)日：2005-02-01
申请号：US09430801
申请日：1999-10-29
CPC分类号： H04R17/00 , H04R2217/03
摘要： A parametric loudspeaker which uses multiple piezoelectric bimorph transducers. These multiple piezoelectric bimorphs have a resonant frequency which varies from unit to unit. The phase response at and near the resonant frequency changes at a very high rate with slight changes in frequency. The associated modulator electronics have a primary carrier frequency that is optimized for maximum parametric output. This is achieved by aligning the carrier frequency with the flattest portions of the phase curve for maximum phase coordination among the multiple devices.
摘要翻译： 使用多个压电双压电晶片的参数扬声器。 这些多个压电双晶片具有从单元到单元不同的谐振频率。 谐振频率及其附近的相位响应以非常高的频率变化，频率略有变化。 相关联的调制器电子器件具有针对最大参数输出而优化的主载波频率。 这是通过将载波频率与相位曲线的平坦部分进行对准来实现的，以便在多个装置之间实现最大相位协调。
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公开(公告)号：US06304662B1
公开(公告)日：2001-10-16
申请号：US09004090
申请日：1998-01-07
IPC分类号： H04R2500
CPC分类号： H04R19/00
摘要： A speaker device comprising an electrostatic emitter film which is responsive to an applied variable voltage to emit sonic output based on a desired sonic signal, used in combination with at least a first foam member having a forward face, an intermediate core section and a rear face. The forward face is composed of a composition having sufficient stiffness to support the electrostatic film and includes conductive properties which enable application of a variable voltage to supply the desired sonic signal. The surface of the forward face includes small cavities having surrounding wall structure defining each cavity which terminates at contacting edges approximately coincident with the forward face of the foam member. The film is applied to the forward face of the foam member and biased in direct contact with the contacting edges of the forward face.
摘要翻译： 一种扬声器装置，包括静电发射膜，其响应所施加的可变电压，以基于期望的声音信号发射声波输出，与至少第一泡沫构件组合使用，所述第一泡沫构件具有前表面，中间芯部分和后表面 。 前面由具有足够的刚度来支撑静电膜的组合物组成，并且包括能够施加可变电压以提供期望的声音信号的导电特性。 前表面的表面包括具有围绕壁结构的小空腔，其限定每个空腔，其终止于与泡沫构件的前表面大致重合的接触边缘。 将薄膜施加到泡沫构件的前表面并被偏压成与前表面的接触边缘直接接触。
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公开(公告)号：US06201874B1
公开(公告)日：2001-03-13
申请号：US09207314
申请日：1998-12-07
IPC分类号： H04R2500
摘要： An electrostatic transducer having respective first and second stators, each having an interior surface, which are displaced and juxtaposed, and including a flexible diaphragm leaving a conductive layer and being operable as an electrostatic emitter. The diaphragm includes an emitter portion which is interposed between the respective interior surfaces of the first and second stators and is configured as a nonplanar film characterized by a continuous array of peaks and valleys. The emitter portion of the diaphragm is positioned adjacent, but substantially unattached to the respective interior surfaces of the first and second stators. The peaks of the emitter portion of the diaphragm may contact the interior surfaces, or may be displaced therefrom. Also disclosed is a method for generating audio output from an electrostatic transducer utilizing a nonplanar emitter portion of a flexible, film diaphragm.
摘要翻译： 一种具有相应的第一和第二定子的静电换能器，每个定子具有内表面，其被移位和并置，并且包括离开导电层的柔性隔膜并且可用作静电发射器。 隔膜包括位于第一和第二定子的相应内表面之间的发射器部分，并且被配置为以平面连续阵列的峰和谷为特征的非平面膜。 隔膜的发射器部分定位成与第一和第二定子的相应内表面相邻但基本上未附着。 隔膜的发射器部分的峰可以接触内表面，或者可以从其移位。 还公开了一种用于利用柔性膜片的非平面发射器部分从静电传感器产生音频输出的方法。
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公开(公告)号：US06577738B2
公开(公告)日：2003-06-10
申请号：US09850523
申请日：2001-05-07
IPC分类号： H04B300
CPC分类号： H04S1/002 , G10H1/0091 , G10H2210/301 , G10K15/02 , H04B11/00 , H04R5/02 , H04R2217/03 , H04S3/00 , H04S3/002
摘要： A system for generating at least one remote virtual speaker location in connection with at least a partial reflective environment in combination with an audio speaker for creating multiple sound effects including a virtual sound source from the reflective environment which is perceived by a listener as an original sound source, by generating a primary direct audio output by emitting audio compression waves toward a listener, and generating a secondary indirect audio output from at least one virtual speaker remote from the audio speakers, by emitting ultrasonic sound from at least one parametric speaker associated with the audio speakers and oriented toward at least one reflective environment which is remote from the audio speakers, thereby indirectly generating sound from a reflective environment which is perceived as a virtual speaker, and synchronizing the primary audio output of the audio speakers with a secondary audio output from the at least one virtual speaker such that the listener hears a plurality of sound effects from a plurality of directions.
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公开(公告)号：US08199931B1
公开(公告)日：2012-06-12
申请号：US12106909
申请日：2008-04-21
IPC分类号： H04R1/40
CPC分类号： H04R17/00 , H04R2217/03
摘要： A method is disclosed for increasing a parametric output of a parametric loudspeaker system. The method can include the operation of providing multiple ultrasonic frequency emission zones that output signals in a frequency band. The phase relationships of the ultrasonic frequency emission zones can be correlated and controlled to increase phase coherence between each ultrasonic frequency emission zone to maximize parametric output. Correlating and controlling the phase relationships can include offsetting a frequency of a carrier signal applied to each emission zone from a resonant frequency of each emission zone in view of a rate of change of phase of each emission zone in a vicinity of each resonant frequency. Ultrasonic energy from the ultrasonic frequency emission zones can be generated, using the correlated phase relationship to increase the parametric output.
摘要翻译： 公开了一种用于增加参数化扬声器系统的参数输出的方法。 该方法可以包括提供在频带中输出信号的多个超声频率发射区域的操作。 超声波发射区的相位关系可以进行相关和控制，以增加每个超声频率发射区之间的相位相干性，以最大化参数输出。 考虑到每个发射区在每个共振频率附近的相位变化率，相关和控制相位关系可以包括从每个发射区的谐振频率偏移施加到每个发射区的载波信号的频率。 可以产生超声波发射区的超声波能量，利用相关的相位关系增加参数输出。
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