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1.发明授权
公开(公告)号：US5073946A
公开(公告)日：1991-12-17
申请号：US441918
申请日：1989-11-28
申请人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Katsuaki Satoh , Kazue Sato , Kousaku Murata , Tsuneo Tanaka , Shuji Saiki , Satoshi Takayama , Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a disphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil driver unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.
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2.发明授权Thin speaker having an enclosure within an open portion and a closed portion 失效薄型扬声器具有开口部分内的外壳和封闭部分
公开(公告)号：US4899390A
公开(公告)日：1990-02-06
申请号：US96528
申请日：1987-09-15
申请人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
发明人： Hiroyuki Takewa , Mitsuhiko Serikawa , Seiichi Ishikawa , Sawako Usuki , Yoichi Kimura , Shuichi Obata
CPC分类号： H04R1/2834 , H04R1/345 , H04R7/04
摘要： A speaker which is thin but which is capable of providing high-fidelity reproduction and ensuring a suitable level of sound pressure even when it is brought close to a wall. A closed chamber is formed behind one part of a diaphragm mounted in an enclosure, and an open chamber is formed behind another part of the diaphragm. At least one voice coil drive unit is connected to the diaphragm. The phase difference between sounds radiated from the front and rear surfaces of the diaphragm is increased as large as possible by using an acoustic duct for the sound radiated through the open chamber, thereby minimizing cancellation of sounds and improving the sound pressure level.
摘要翻译： 扬声器虽然薄但能够提供高保真的再现性，并且即使当靠近墙壁时也能确保合适的声压水平。 在安装在外壳中的隔膜的一部分之后形成封闭的室，并且隔膜的另一部分后面形成开放室。 至少一个音圈驱动单元连接到隔膜。 通过使用用于通过开放室辐射的声音的声管，尽可能地增大从隔膜的前表面和后表面辐射的声音之间的相位差，从而最小化声音的消除和提高声压级。
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公开(公告)号：US4426556A
公开(公告)日：1984-01-17
申请号：US281167
申请日：1981-07-07
申请人： Shuji Saiki , Katuaki Sato , Kazue Sato , Seiichi Ishikawa , Hideaki Inoue , Tsuneo Tanaka
发明人： Shuji Saiki , Katuaki Sato , Kazue Sato , Seiichi Ishikawa , Hideaki Inoue , Tsuneo Tanaka
摘要： An electrodynamic loudspeaker which comprises a generally rectangular flat vibrating plate, and first and second magnetic drives for driving the vibrating plate to produce vibrations. The first magnetic drive is so positioned as to drive the vibrating plate at a first location corresponding to one of two line nodes m.sub.1 and m.sub.2 of vibration of a first predetermined frequency f.sub.1 which would be produced when the vibrating plate is driven at the center thereof, whereas the second magnetic drive is so positioned as to drive the vibrating plate at a second location corresponding to one of four line nodes n.sub.1, n.sub.2, n.sub.3 and n.sub.4 of vibration of a second predetermined frequency f.sub.3 which would be produced when the vibrating plate is driven at the center thereof. Each of all of the line nodes extends in parallel to the shorter sides of the rectangular shape of the vibrating plate.
摘要翻译： 一种电动扬声器，其包括大致矩形的平面振动板，以及用于驱动振动板以产生振动的第一和第二磁性驱动器。 第一磁驱动器被定位成在对应于当振动板在其中心被驱动时产生的第一预定频率f1的两个线节点m1和m2振动之一的第一位置处驱动振动板， 而第二磁驱动器被定位成在与驱动振动板时产生的第二预定频率f3的振动的四个线节点n1，n2，n3和n4中的一个对应的第二位置处驱动振动板 在其中心。 所有线节点中的每一个平行于振动板的矩形形状的较短边延伸。
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公开(公告)号：US5023913A
公开(公告)日：1991-06-11
申请号：US358282
申请日：1989-05-26
申请人： Masaharu Matsumoto , Katsuaki Satoh , Seiichi Ishikawa , Mitsuhiko Serikawa , Akihisa Kawamura , Hikari Hashimoto
发明人： Masaharu Matsumoto , Katsuaki Satoh , Seiichi Ishikawa , Mitsuhiko Serikawa , Akihisa Kawamura , Hikari Hashimoto
摘要： An apparatus for changing a sound field, comprising at least two signal processing means, which can smoothly and continuously switch a sound field into an arbitrary sound field without a break of signals by alternately switching one of the signal processing means into the other.
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公开(公告)号：US4484383A
公开(公告)日：1984-11-27
申请号：US390609
申请日：1982-06-21
CPC分类号： H04R31/003 , H04R7/10 , Y10T156/1003 , Y10T29/49575 , Y10T29/49906 , Y10T428/24149
摘要： A multi-layer block to be developed into a disk having a honeycomb construction is initially developed into a columnar block, and then the bottom of the columnar block is radially developed for obtaining a core of a speaker diaphragm. A suitable circular thin layer is attached to the top and bottom of the core to complete a diaphragm. The columnar block may be developed by means of a cone-shaped tool into a truncated cone, and this truncated cone may be further developed into a flat disk by applying a force to the top thereof. Since the forces on development are applied to the block uniformly, the density of hexagonal sections of the honeycomb construction is uniform throughout the entire circumference of the core providing superior speaker characteristics.
摘要翻译： 开发成具有蜂窝结构的盘的多层块最初被开发成柱状块，然后将柱状块的底部径向展开以获得扬声器隔膜的芯。 将合适的圆形薄层连接到芯的顶部和底部以完成隔膜。 柱状块可以通过锥形工具显影成截头圆锥体，并且该截锥体可以通过向其顶部施加力而进一步显影成平盘。 由于开发力均匀地应用于块体，蜂窝结构的六边形部分的密度在芯的整个圆周上是均匀的，从而提供优异的扬声器特性。
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公开(公告)号：US5051942A
公开(公告)日：1991-09-24
申请号：US285606
申请日：1988-12-15
CPC分类号： H03G5/005
摘要： A transfer function is determined in accordance with an amplitude characteristic and a phase characteristic. The transfer function is subjected to inverse Fourier transform. An imaginary part of a result of the inverse Fourier transform is set to zero and thereby the result of the inverse Fourier transform is converted into a converted result. The converted result is subjected to Fourier transform. The amplitude characteristic and the phase characteristic are updated in accordance with a result of the Fourier transform. Such processes are reiterated. A primary desired amplitude characteristic is corrected in accordance with the finally-obtained amplitude characteristic so that the primary desired amplitude characteristic is converted into a final desired amplitude characteristic. A final desired phase characteristic is determined in accordance with the finally-obtained phase characteristic. A second transfer function is determined in accordance with the final desired amplitude characteristic and the final desired phase characteristic. The second transfer function is subjected to inverse Fourier transform. Filter factors are calculated from a real part of a result of the inverse Fourier transform of the second transfer function. The calculated filter factors are set in a FIR digital filter.
摘要翻译： 根据振幅特性和相位特性确定传递函数。 传递函数进行傅里叶逆变换。 逆傅立叶变换的结果的虚部被设置为零，从而将傅里叶逆变换的结果转换为转换结果。 转换结果进行傅里叶变换。 根据傅立叶变换的结果更新振幅特性和相位特性。 重申这些过程。 根据最终获得的幅度特性来校正主期望幅度特性，使得主期望幅度特性被转换成最终期望的幅度特性。 根据最终获得的相位特性确定最终期望的相位特性。 根据最终期望的振幅特性和最终期望的相位特性来确定第二传递函数。 第二传递函数进行傅里叶逆变换。 根据第二传递函数的逆傅立叶变换的结果的实部计算滤波因数。 计算的滤波器因子在FIR数字滤波器中设置。
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公开(公告)号：US4896285A
公开(公告)日：1990-01-23
申请号：US144477
申请日：1988-01-15
CPC分类号： H03H17/06 , H03H17/0211
摘要： An apparatus for calculating a filter factor for a digital filter which can be simply constructed and in which the time period for calculation can be shortened as compared with conventional techniques. The apparatus has an input circuit for inputting a desirable frequency property, a division circuit for dividing the inputted frequency property into a plurality of frequency bands, and a calculating circuit for obtaining filter factors for realizing a frequency property of each of the divided frequency bands. The input circuit inputs the frequency property with a frequency resolution corresponding to the number of the filter factors. The division circuit performs a correction for a division so that the frequency property becomes zero from a frequency over the high cut-off frequency of a band-pass filter toward the Nyquist frequency of the frequency band corresponding to the transversal filter, the Nyquist frequency being 1/2 of the sampling frequency. The calculating circuit has a transformation unit for performing a Hilbert transformation or a linear phase transformation with respect to the respective frequency properties divided by the division circuit.
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8.发明授权Digital equalizer apparatus enabling separate phase and amplitude characteristic modification 失效数字均衡器装置可实现单独的相位和幅度特性修改
公开(公告)号：US4888808A
公开(公告)日：1989-12-19
申请号：US171713
申请日：1988-03-22
IPC分类号： H03G5/00
摘要： A digital equalizer for audio system applications is based on a FIR (finite impulse response) digital filter whose amplitude and phase/frequency characteristics can be respectively independently established in accordance with input data representing an arbitrary amplitude/frequency characteristic and input phase data from which an arbitrary phase/frequency characteristic for the filter can be derived. In addition to audio frequency response equalization, the apparatus can be provided with a microphone howl suppression function.
摘要翻译： 用于音频系统应用的数字均衡器基于FIR（有限脉冲响应）数字滤波器，其幅度和相位/频率特性可以根据表示任意幅度/频率特性的输入数据和输入相位数据分别独立地建立， 可以推导出滤波器的任意相位/频率特性。 除音频响应均衡外，该装置还可以提供麦克风啸声抑制功能。
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公开(公告)号：US08698002B2
公开(公告)日：2014-04-15
申请号：US12998700
申请日：2009-07-09
CPC分类号： C25D5/505 , C25D5/12 , C25D5/50 , C25D7/00 , H01R13/03 , Y10T29/49124 , Y10T428/12708
摘要： A Cu—Sn layer and an Sn-based surface layer are formed in this order on the surface of a Cu-based substrate through an Ni-based base layer, and the Cu—Sn layer is composed of a Cu3Sn layer arranged on the Ni-based base layer and a Cu6Sn5 layer arranged on the Cu3Sn layer; the Cu—Sn layer obtained by bonding the Cu3Sn layer and the Cu6Sn5 layer is provided with recessed and projected portions on the surface which is in contact with the Sn-based surface layer; thicknesses of the recessed portions are set to 0.05 μm to 1.5 μm, the area coverage of the Cu3Sn layer with respect to the Ni-based base layer is 60% or higher, the ratio of the thicknesses of the projected portions to the thicknesses of the recessed portions in the Cu—Sn layer is 1.2 to 5, and the average thickness of the Cu3Sn layer is 0.01 μm to 0.5 μm.
摘要翻译： 通过Ni基底层在Cu基基板的表面上依次形成Cu-Sn层和Sn系表面层，Cu-Sn层由设置在Ni上的Cu 3 Sn层构成 基底层和布置在Cu3Sn层上的Cu6Sn5层; 通过结合Cu 3 Sn层和Cu 6 Sn 5层获得的Cu-Sn层在与Sn基表面层接触的表面上设置有凹凸部分; 将凹部的厚度设定为0.05μm〜1.5μm，Cu3Sn层相对于Ni基底层的面积覆盖率为60％以上，凸部的厚度与厚度的比例 Cu-Sn层的凹部为1.2〜5，Cu 3 Sn层的平均厚度为0.01μm〜0.5μm。
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公开(公告)号：US20110168521A1
公开(公告)日：2011-07-14
申请号：US13119440
申请日：2009-09-17
申请人： Shigeru Arimoto , Seiichi Ishikawa
发明人： Shigeru Arimoto , Seiichi Ishikawa
CPC分类号： B65H27/00 , B65H2402/70 , B65H2404/1311 , B65H2404/181 , B65H2701/1722
摘要： A conveying roller facilitates conveyance of a sticky material in the form of sheet or web to be conveyed. An outer peripheral layer of the convey roller is formed on its rolling surface with a plurality of pits at a predetermined occupancy ratio defined by an occupancy ratio of a total area occupied by all of the pits to an area of the rolling surface of the outer peripheral layer. The outer peripheral layer is formed on the rolling surface thereof with a plurality of pits at the occupancy ratio set depending on a degree of stickiness expressed by the sheet material to achieve peel properties of the outer peripheral layer which is compatible with the stickiness of the sheet material and thereby to prevent the sticky sheet material from twining around the conveying roller.
摘要翻译： 输送辊有助于输送待输送的片材或纤维网形式的粘性材料。 输送辊的外周层以其由所有凹坑占据的总面积与外周面的滚动面的面积的占有率限定的预定占有率在多个凹坑上形成有多个凹坑 层。 外周层在其滚动面上形成有多个凹坑，其占据率根据由片材表示的粘着度设定，以实现与片材的粘性相容的外周层的剥离性能 从而防止粘性片材缠绕在输送辊周围。
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