公开(公告)号：US06581722B2

公开(公告)日：2003-06-24

申请号：US09768420

申请日：2001-01-24

申请人： Peter Faulhaber ,  Reinhard Pongratz

发明人： Peter Faulhaber ,  Reinhard Pongratz

IPC分类号： G10K1116

CPC分类号： G10K11/161 ,  F16L55/033 ,  F16L55/0338

摘要： An acoustic absorber (10) comprises a housing or wall (11), defining an interior absorber chamber (12) connected by openings (13) to a duct (20) to reduce the sound in the duct (20). The natural frequency and impedance of the absorber (12) are variable, so that the absorber (12) can be adapted to a sound field in the duct (20) in a manner corresponding to the respective operating conditions. Such adaptation is achieved mechanically, for example, by an elastic membrane (15) for varying the volume of chamber (12), or thermally, for example, by a heating wire (14) or a wire braid (17).

摘要翻译： 声吸收器（10）包括壳体或壁（11），其限定通过开口（13）连接到管道（20）的内部吸收室（12），以减少管道（20）中的声音。 吸收器（12）的固有频率和阻抗是可变的，使得吸收器（12）可以以对应于各个操作条件的方式适应于管道（20）中的声场。 例如通过用于改变腔室（12）的体积的弹性膜（15）或例如通过加热丝（14）或钢丝编织物（17）进行加热来实现这种适应。

公开(公告)号：US06808045B2

公开(公告)日：2004-10-26

申请号：US10306146

申请日：2002-11-27

申请人： Michael T. Campbell

发明人： Michael T. Campbell

IPC分类号： G10K1116

CPC分类号： B60R13/083 ,  B60R2013/0281 ,  G10K11/16 ,  G10K11/168 ,  Y10S277/916 ,  Y10S454/906

摘要： An acoustic barrier systems that reduces the amount of noise entering the passenger compartment of a vehicle includes a secondary acoustic attenuator that extends from a primary acoustic barrier to a vehicle component case to envelop space around a conduit passing from the engine compartment to the component case. In one embodiment, the secondary acoustic attenuator extends from the primary acoustic barrier to the component case, with the secondary acoustic attenuator enveloping space around the conduit between the vehicle component case and the primary acoustic barrier. In another embodiment, the secondary acoustic attenuator is hingedly connected to the primary acoustic barrier to allow the secondary acoustic attenuator to be pivoted, from an orientation that allows installation of the vehicle component case, to another orientation wherein the secondary acoustic attenuator engages the vehicle component case to envelop space around the conduit between the vehicle component case and the primary acoustic barrier.

摘要翻译： 减少进入车辆乘客室的噪声量的声屏障系统包括辅助声衰减器，其从主声屏障延伸到车辆部件壳体，以围绕从发动机舱传递到部件壳体的导管包围空间。 在一个实施例中，辅助声衰减器从主声屏障延伸到组件壳体，辅助声衰减器围绕车辆部件壳体和主声屏障之间的导管包围空间。 在另一个实施例中，辅助声衰减器铰接地连接到主声屏障，以允许辅助声衰减器从允许车辆部件壳体的安装的方向枢转到另一取向，其中辅声衰减器接合车辆部件 在车辆部件壳体和主声屏障之间的导管周围的包围空间的情况。

公开(公告)号：US06625285B1

公开(公告)日：2003-09-23

申请号：US09047404

申请日：1998-03-25

申请人： Tadashi Ohashi

发明人： Tadashi Ohashi

IPC分类号： G10K1116

CPC分类号： G10K11/178 ,  G10K2210/104

摘要： The invention provides an acoustic cooling system with a noise reduction function of the type wherein a driving condition of a sound source used in the acoustic cooling system is controlled to compress coolant by a sound wave and a cooling object is cooled making use of an endothermic action of the coolant when the compressed coolant is expanded and which can reduce noise produced from the sound source effectively. To this end, the acoustic cooling system forwards cancellation sound having a characteristic capable of offsetting or cancelling the noise originating from the sound source and includes a cancellation signal production element for producing, in accordance with a driving control signal produced by a sound source control element, a cancellation signal having a characteristic capable of cancelling the noise produced as the sound source is driven, a cancellation signal level adjustment element for adjusting the signal level of the cancellation signal in accordance with the driving control signal, and a cancellation sound outputting element for converting the cancellation signal having the adjusted signal level into a sound wave and outputting the sound wave as the cancellation sound for the noise.

摘要翻译： 本发明提供了一种具有降噪功能的声学冷却系统，其中在声音冷却系统中使用的声源的驱动条件被控制以通过声波压缩冷却剂，并且使用吸热作用来冷却冷却对象 当压缩冷却剂膨胀并且可以有效地降低由声源产生的噪音时，冷却剂的流动。 为此，声学冷却系统转发具有能够抵消或消除源自声源的噪声的特征的取消声音，并且包括消除信号产生元件，用于根据由声源控制元件产生的驱动控制信号 具有能够消除作为声源产生的噪声的特性的消除信号，根据驱动控制信号调整抵消信号的信号电平的消除信号电平调整元件，以及用于 将具有调整的信号电平的消除信号转换为声波，并输出声波作为噪声的消除声音。

公开(公告)号：US06674690B2

公开(公告)日：2004-01-06

申请号：US09998803

申请日：2001-11-01

申请人： Vipin Malik ,  Keith V. Groeschel

发明人： Vipin Malik ,  Keith V. Groeschel

IPC分类号： G10K1116

CPC分类号： H04R3/00 ,  Y10S367/903

摘要： An acoustic device that places existing components in a damping pattern after transmitting an acoustic signal. In one embodiment, the device comprises a transistor bridge and an acoustic transducer. The transistor bridge is coupled between two predetermined voltages having a voltage difference, and the acoustic transducer is coupled between the arms of the transistor bridge. The transistor bridge enters a damping configuration after applying an excitation pattern to the acoustic transducer. In the damping configuration, the input terminals of the transistor bridge are preferably grounded. In applying the excitation pattern, the transistor bridge preferably applies the voltage difference to the acoustic transducer in alternate polarities. In a preferred embodiment, the acoustic transducer includes a transformer having a primary winding coupled between the arms of the transistor bridge, and further includes a piezoelectric crystal coupled to a secondary winding of the transformer.

摘要翻译： 一种在发送声信号之后将现有部件放置在阻尼图案中的声学装置。 在一个实施例中，该器件包括晶体管桥和声换能器。 晶体管桥耦合在具有电压差的两个预定电压之间，并且声换能器耦合在晶体管桥的臂之间。 在向声换能器施加激励模式之后，晶体管桥进入阻尼配置。 在阻尼配置中，晶体管桥的输入端优选接地。 在施加激励图案时，晶体管桥优选以相反的极性将电压差施加到声换能器。 在优选实施例中，声换能器包括具有耦合在晶体管桥的臂之间的初级绕组的变压器，并且还包括耦合到变压器的次级绕组的压电晶体。

公开(公告)号：US06597792B1

公开(公告)日：2003-07-22

申请号：US09353425

申请日：1999-07-15

申请人： Roman Sapiejewski ,  Michael J. Monahan

发明人： Roman Sapiejewski ,  Michael J. Monahan

IPC分类号： G10K1116

CPC分类号： H04R1/1083 ,  H04R1/1008 ,  H04R1/1075 ,  H04R5/033

摘要： A headset has an earcup with front opening adjacent to an annular cushion formed with a plurality of openings facing the inside of the earcup that acoustically couples the earcup volume to the cushion volume. A driver is seated inside the earcup with a microphone adjacent to the driver. Active noise reducing circuitry intercouples the driver and microphone. An acoustic load that may comprise a wire mesh resistive cover and/or air mass adjacent the microphone is constructed and arranged to reduce the effect of resonances in the earcup volume.

摘要翻译： 头戴式耳机具有耳罩，其具有邻近环形垫片的前开口，该环形垫片形成有面向耳罩内部的多个开口，其将耳罩体积声学耦合到缓冲体积。 驾驶员坐在耳塞内部，并带有与驾驶员相邻的麦克风。 主动降噪电路将驱动器和麦克风相互耦合。 构成并布置可包括邻近麦克风的金属丝网电阻盖和/或空气质量的声学负载，以减小耳罩体积中共振的影响。

公开(公告)号：US06820720B1

公开(公告)日：2004-11-23

申请号：US10049344

申请日：2002-02-11

申请人： Norbert Nicolai ,  Helmut V. Fuchs ,  Dinh-Quyen Chuong

发明人： Norbert Nicolai ,  Helmut V. Fuchs ,  Dinh-Quyen Chuong

IPC分类号： G10K1116

CPC分类号： G10K11/16 ,  B60R13/02 ,  B60R13/0225 ,  B60R13/0243 ,  B60R13/025 ,  B60R13/0256 ,  B60R13/0262 ,  B60R13/0268 ,  B60R13/08 ,  B60R13/0815 ,  B60R13/083 ,  B60R13/0838 ,  B60R13/0861

摘要： A sound-absorbing article which is one of a lining or a shaped element and which has a sound absorptive effect over a broad frequency range particularly useful in transportation vehicle when positioned proximate a reverberant wall, the article including at least one microperforated sheet absorber which has microperforations defined therein having at least one hole diameter ranging from 0.05 mm to 2 mm, which has at least one interhole distance ranging from 1 mm to 20 mm, and which has a proportion of hole area ranging from 0.2 to 4%, based on surface area of the at least one microperforated sheet absorber; and at least one absorber which is at least one of a foam absorber and a non-woven absorber and which is positioned at a preselected spatial distance from a reverberant wall.

摘要翻译： 一种吸音制品，其是衬里或成形元件之一，并且当在靠近混响壁定位时在特别适用于运输车辆的宽频率范围内具有吸音效果，所述制品包括至少一个微穿孔板吸收器，其具有 其中限定的微孔具有至少一个孔直径范围为0.05mm至2mm的孔，其具有至少一个距离为1mm至20mm的孔间距离，并且其具有基于表面的孔面积的范围为0.2至4％ 所述至少一个微穿孔片吸收体的面积; 以及至少一个吸收器，其是泡沫吸收器和非织造吸收体中的至少一个，并且位于距离混响壁的预选空间距离处。

公开(公告)号：US06216817B1

公开(公告)日：2001-04-17

申请号：US09061914

申请日：1998-04-17

申请人： Tatsumi Kannon ,  Shunichi Hayashi ,  Hidenao Kawai

发明人： Tatsumi Kannon ,  Shunichi Hayashi ,  Hidenao Kawai

IPC分类号： G10K1116

CPC分类号： G10K11/16 ,  G10K11/168 ,  Y10S181/403

摘要： A vibration damped structure, which is excellent in vibration absorption and sound absorption effect, is provided by coating the surface of a structure to be damped with a mixture of molten photopolymerizable resin and a photopolymerization initiator and then subjecting the coated surface to irradiation, whereby a vibration damping coating is formed on said surface.

摘要翻译： 通过用熔化的光聚合性树脂和光聚合引发剂的混合物涂布要被阻尼的结构的表面，然后对涂覆的表面进行照射，提供振动吸收和吸音效果优异的减振结构，由此 在所述表面上形成减振涂层。