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公开(公告)号：US20130230195A1
公开(公告)日：2013-09-05
申请号：US13764150
申请日：2013-02-11
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
IPC: H04R1/20
Abstract: A condenser microphone which prevents a directional axis from varying depending on a sound source frequency is provided. The condenser microphone includes a first reflector member 2 provided below the microphone unit 17 and covering an electronic circuit substrate 19 and a second reflector member 3 formed in the same shape as the first reflector member and provided above the microphone unit, the first reflector member and the second reflector member being disposed symmetrically with respect to the microphone unit.
Abstract translation: 提供防止方向轴根据声源频率而变化的电容式麦克风。 电容麦克风包括设置在麦克风单元17下方并覆盖电子电路基板19的第一反射器部件2和形成为与第一反射器部件相同形状并设置在麦克风单元上方的第二反射器部件3，第一反射器部件 第二反射器部件相对于麦克风单元对称设置。
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公开(公告)号：US20170303047A1
公开(公告)日：2017-10-19
申请号：US15385097
申请日：2016-12-20
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Tatsuya IKEDA , Hiroshi AKINO
Abstract: In a unidirectional dynamic microphone unit, a cylindrical tube is provided to cover the microphone unit, a cylindrical wall of a first cylindrical portion that is included in the cylindrical tube and extends to at least the rearward is provided with a rear sound wave introducing portion weighted such that an acoustic resistance value is gradually made smaller toward the rearward side from positions of sound holes for taking in a sound wave transmitting around from the rearward side, preferably formed of a trumpet-shaped opening, and it is possible to enhance the sensibility to sound pressures without degradation of the frequency response and the directionality.
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公开(公告)号：US20170180857A1
公开(公告)日：2017-06-22
申请号：US15366661
申请日：2016-12-01
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
CPC classification number: H04R3/04 , H03F1/04 , H03F3/181 , H03F3/30 , H03F2200/03 , H04R3/005 , H04R19/04
Abstract: A condenser microphone includes a first grounded-plate electron tube having a plate to which a dc power is supplied, and a cathode provided with an output terminal, a self-biasing circuit that is connected to the cathode of the first electron tube and that generates a grid bias voltage of the first electron tube by voltage drop with a cathode current, and a second grounded-cathode electron tube having a plate to which a series circuit of the first electron tube and the self-biasing circuit is connected as a load circuit. A positive phase output from a first condenser microphone unit is supplied to a grid of the first electron tube, and a reverse phase output from a second condenser microphone unit is supplied to a grid of the second electron tube.
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公开(公告)号：US20170064449A1
公开(公告)日：2017-03-02
申请号：US15243129
申请日：2016-08-22
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroaki FURUYA , Hiroshi AKINO , Satoshi YOSHINO
CPC classification number: H05B33/0842 , H04R1/08 , H04R3/00 , H04R19/04
Abstract: An audio output circuit of a condenser microphone includes a condenser microphone unit, first and second impedance conversion circuits that receive a positive phase output signal and a reverse phase output signal from the condenser microphone unit, first and second output circuits that output an audio signal from the condenser microphone unit in a balanced line to a balanced output terminals upon receipt of outputs of the first and second impedance conversion circuits. First and second impedance conversion circuits respectively use FETs as source follower circuits and supply first and second impedance conversion outputs generated across source resistors to the first and second output circuits. A voltage regulating device that generates a constant voltage is connected in series to the source resistors. With this configuration, an audio output circuit of a condenser microphone is provided, which solves a problem of operation instability caused by variation of Idss's of the FETs.
Abstract translation: 电容麦克风的音频输出电路包括电容麦克风单元，从电容式麦克风单元接收正相输出信号和反相输出信号的第一和第二阻抗转换电路，从电容麦克风单元输出音频信号的第一和第二输出电路， 所述电容麦克风单元在接收到所述第一和第二阻抗转换电路的输出时在平衡线路中连接到平衡输出端子。 第一和第二阻抗转换电路分别使用FET作为源极跟随器电路，并将源极电阻器两端产生的第一和第二阻抗转换输出提供给第一和第二输出电路。 产生恒定电压的电压调节装置与源极电阻串联连接。 利用这种配置，提供了一种电容麦克风的音频输出电路，其解决了由于FET的Idss的变化引起的操作不稳定性的问题。
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公开(公告)号：US20160269821A1
公开(公告)日：2016-09-15
申请号：US15061226
申请日：2016-03-04
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
CPC classification number: H04R1/342 , H04R1/021 , H04R31/006
Abstract: Excellent narrow-angle directivity is obtained by causing a microphone case main body to function as an acoustic tube, reducing a weight of a microphone, and suppressing leakage of sound waves from an inside of the acoustic tube to an outside. An acoustic tube microphone case includes a microphone case main body made of a metal tube having a plurality of openings formed in a peripheral surface, and acoustic resistance materials formed in a rectangular sheet manner, cylindrically rounded such that both right and left ends are mutually in contact, and arranged along an inner peripheral surface of the microphone case main body. A plurality of the acoustic resistance materials is layered, and at least the innermost acoustic resistance material applies a force in a developing direction by an elastic force thereof, and presses the outside acoustic resistance materials against the inner peripheral surface of the microphone case main body.
Abstract translation: 通过使麦克风外壳主体用作声管，减少麦克风的重量，并且抑制声波从声管的内部泄漏到外部，可以获得出色的窄角方向性。 声管传声器壳体包括由金属管制成的麦克风壳体主体，该金属管具有形成在周面上的多个开口，以及以矩形片状形成的声阻材料，圆柱形地圆形，使得左右两端彼此相互 接触，并且沿着麦克风外壳主体的内周面布置。 多个声阻材料层叠，并且至少最内层的声阻材料通过其弹力施加显影方向的力，并将外部的抗电阻材料压靠在麦克风外壳主体的内周面上。
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Patent Agency Ranking
公开(公告)号：US20160156321A1
公开(公告)日：2016-06-02
申请号：US14946269
申请日：2015-11-19
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
CPC classification number: H03F1/56 , H03F5/00 , H03F2200/03 , H04R3/06 , H04R19/04
Abstract: To provide an impedance converter circuit for a condenser microphone which can secure a wide dynamic range using a voltage amplifier circuit. The impedance converter circuit is provided with: a first electron tube of a cathode grounded type in which an output signal of a condenser microphone unit is input into a grid and output from a plate; a second electron tube in which an output signal from the plate of the first electron tube is input into a grid and output from at least a cathode; and a feedback element configured to transmit a feedback signal from the cathode of the second electron tube to the grid of the first electron tube.
Abstract translation: 提供用于电容式麦克风的阻抗转换器电路，其可以使用电压放大器电路确保宽的动态范围。 阻抗转换器电路设置有：阴极接地型的第一电子管，其中电容式麦克风单元的输出信号被输入格栅并从板输出; 第二电子管，其中来自第一电子管的板的输出信号被输入栅极并从至少一个阴极输出; 以及反馈元件，被配置为将来自第二电子管的阴极的反馈信号传输到第一电子管的栅极。
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公开(公告)号：US20160094919A1
公开(公告)日：2016-03-31
申请号：US14851953
申请日：2015-09-11
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
CPC classification number: H04R31/00 , H04R19/04 , H04R2201/003
Abstract: A condenser microphone unit includes a diaphragm vibrated by acoustic waves, a fixed electrode disposed to face the diaphragm, and an insulation base making contact with a rim portion of the fixed electrode to support the fixed electrode, wherein a ring-shaped protrusion is provided on a rim portion of the insulation base, the ring-shaped protrusion protruding toward the fixed electrode with a radially inward taper and having a ring-shaped distal face to oppose the rim portion of the fixed electrode, the distal face of the ring-shaped protrusion supports the rim portion of the fixed electrode, and an adhesive is provided on a tapered surface of the ring-shaped protrusion positioned between the insulation base and the fixed electrode, the adhesive having property to shrink by curing. When the adhesive is cured, contact portions of the insulation base and the fixed electrode are tightly bonded together.
Abstract translation: 电容麦克风单元包括由声波振动的振动膜，设置成面对隔膜的固定电极，以及与固定电极的边缘部分接触以支撑固定电极的绝缘基座，其中环形突起设置在 所述绝缘基座的边缘部分，所述环状突起朝向所述固定电极突出，具有径向向内的锥形并且具有与所述固定电极的边缘部分相对的环形远端面，所述环形突起的远端 支撑固定电极的边缘部分，并且粘合剂设置在位于绝缘基底和固定电极之间的环形突起的锥形表面上，该粘合剂具有通过固化收缩的性质。 当粘合剂固化时，绝缘基底和固定电极的接触部分紧密结合在一起。
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公开(公告)号：US20160044408A1
公开(公告)日：2016-02-11
申请号：US14809864
申请日：2015-07-27
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
IPC: H04R1/32
CPC classification number: H04R1/342
Abstract: A boundary microphone that can reduce the change in its directional property caused by change of a sound collection axis of a microphone unit is provided. The boundary microphone includes a unidirectional microphone unit, a cylindrical unit holding member having a unit accommodating pocket in its peripheral surface to accommodate the unidirectional microphone unit, and a boundary plate to which top face the unit holding member is attached so as to rotate about its axis. When the unidirectional microphone unit is held in the unit holding member, a front acoustic terminal is positioned to face the outside of the peripheral surface of the unit holding member, the sound collection axis intersects the axis of a hollow of the unit holding member, and a rear acoustic terminal communicates with the outside at both side ends of the hollow via the hollow of the unit holding member.
Abstract translation: 提供了可以减少由麦克风单元的声音采集轴的变化引起的方向特性变化的边界麦克风。 所述边界麦克风包括单向麦克风单元，圆筒单元保持构件，其具有在其外围表面中容纳所述单向麦克风单元的单元容纳凹部，以及边界板，所述单元保持构件的顶面附接到所述边界板，以围绕其旋转 轴。 当单向麦克风单元被保持在单元保持构件中时，前声端子被定位成面向单元保持构件的周面的外侧，收音轴与单元保持构件的中空部的轴线相交，并且 后声学终端经由单元保持构件的中空部与中空的两侧端部的外部连通。
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公开(公告)号：US20150382102A1
公开(公告)日：2015-12-31
申请号：US14727120
申请日：2015-06-01
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
CPC classification number: H04R1/2876 , H04R9/08 , H04R31/00
Abstract: A dynamic microphone which prevents a wall forming a back-side air chamber from having a certain resonance frequency and effectively prevents the generation of standing waves in the back-side air chamber is provided. A dynamic microphone includes a dynamic microphone unit including a diaphragm configured with a voice coil and a magnetic circuit having a magnetic gap provided so as to allow the voice coil to vibrate, a bottomed case which is coupled to the dynamic microphone unit and forms a back-side air chamber communicating with back side of the diaphragm, and an acoustic resistance body which is pressingly attached in the case and composed of metal fiber including a pocket, an open cross sectional area of the pocket gradually decreasing toward the direction remote from the dynamic microphone unit.
Abstract translation: 提供一种动态麦克风，其防止形成背侧空气室的壁具有一定的共振频率并且有效地防止在后侧空气室中产生驻波。 动态麦克风包括动态麦克风单元，其包括配置有音圈的隔膜和具有提供以允许音圈振动的磁隙的磁路，耦合到动态麦克风单元并形成背面的底壳 与隔膜的背面连通的侧面空气室，以及紧密地安装在壳体中并由包括袋的金属纤维构成的声阻体，口袋的开口横截面积朝向远离动态的方向逐渐减小 麦克风单元
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公开(公告)号：US20150201265A1
公开(公告)日：2015-07-16
申请号：US14572245
申请日：2014-12-16
Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA
Inventor： Hiroshi AKINO
IPC: H04R1/08
Abstract: A unidirectional condenser microphone includes a diaphragm, a fixed electrode disposed opposite a back face of the diaphragm and an electrode extraction part for the fixed electrode disposed at a backside of the fixed electrode and having a through hole adapted to capture a sound wave from a rear acoustic terminal into a backside of the diaphragm. The through hole has a horn-shaped opening formed in continuation of the through hole at the rear acoustic terminal side thereof such that an inner diameter of the horn-shaped opening is increased toward the rear acoustic terminal side. The electrode extraction part has a plurality of the through holes formed therein at regular intervals along a concentric circle around an axial center of the electrode extraction part, and all the through holes along the concentric circle have the horn-shaped openings formed therein, respectively.
Abstract translation: 单向电容麦克风包括隔膜，与隔膜的背面相对设置的固定电极和设置在固定电极的背面的用于固定电极的电极提取部，并且具有适于从后方捕获声波的通孔 声学终端进入隔膜的背面。 通孔具有喇叭形开口，该喇叭形开口在其后声端子侧的通孔的连续形成，使得喇叭形开口的内径朝着后声端子侧增大。 电极提取部具有沿着电极提取部的轴心的同心圆以规定的间隔形成的多个通孔，并且沿着同心圆的所有贯通孔分别形成有喇叭形开口。
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