公开(公告)号：US20150003645A1

公开(公告)日：2015-01-01

申请号：US14287779

申请日：2014-05-27

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R19/04 ,  H04R1/08

CPC classification number: H04R19/04 ,  H04R1/08

Abstract: A handheld condenser microphone is provided with a condenser microphone unit having two unidirectional condenser elements. A conductive fabric 221 is put between a lock ring 213 and the second condenser element 10b, when an acoustic-electric transducer 220 is fixed inside a unit case 210 by fastening force of the lock ring 213.

Abstract translation: 手持式电容麦克风设置有具有两个单向电容器元件的电容式麦克风单元。 当声电传感器220通过锁定环213的紧固力固定在单元壳体210内时，导电织物221放置在锁定环213和第二电容器元件10b之间。

公开(公告)号：US20140198942A1

公开(公告)日：2014-07-17

申请号：US14146322

申请日：2014-01-02

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroaki FURUYA ,  Hiroshi AKINO

IPC: H04R9/02

CPC classification number: H04R9/025 ,  H04R1/04 ,  H04R1/08 ,  H04R1/2807 ,  H04R1/2892 ,  H04R3/00 ,  H04R9/08

Abstract: A back air room of a microphone unit can be enlarged and a model with a sound signal output switch can easily be diverted to a switchless model. A reed switch 16 is used as the sound signal output switch which turns on or off the sound signal from a microphone unit 1. This reed switch is disposed at an output connector 11 portion at an rear end of a microphone case 6. It is arranged that a magnet 22 is disposed at a connector cover 21 which surrounds an output connector and relative movement of the connector cover with respect to the output connector allows on/off operation. Thus, by removing the connector cover 21, it is possible to provide the microphone as a switchless model which always outputs the sound signal from the microphone unit 1.

Abstract translation: 麦克风单元的后排空间可以放大，并且具有声音信号输出开关的模型可以容易地转移到无切换模型。 簧片开关16用作声音信号输出开关，其从麦克风单元1接通或关闭声音信号。该舌簧开关设置在麦克风壳体6的后端处的输出连接器11部分。布置 磁体22设置在围绕输出连接器的连接器盖21处，连接器盖相对于输出连接器的相对运动允许开/关操作。 因此，通过去除连接器盖21，可以提供麦克风作为总是从麦克风单元1输出声音信号的无开关模型。

公开(公告)号：US20170171680A1

公开(公告)日：2017-06-15

申请号：US15366591

申请日：2016-12-01

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R29/00 ,  H04R3/04 ,  H04R1/04

CPC classification number: H04R29/004 ,  H04R1/04 ,  H04R3/04 ,  H04R2410/07

Abstract: A narrow directional microphone includes a unit case having a front end portion to which a microphone unit is mounted, and a side surface functioning as a grip, an acoustic tube formed of resin material in a tubular shape, covering the microphone unit, and attached to the front end portion of the unit case such that the microphone unit is positioned to an inner bottom portion of the acoustic tube, a piezoelectric film that is arranged in at least one part of the acoustic tube, and that generates a detection output based on a mechanical deformation of the acoustic tube, and an output signal processing unit including an attenuation circuit that attenuates an audio signal from the microphone unit with the detection output from the piezoelectric film and sends the attenuated audio signal to a signal output unit.

公开(公告)号：US20170099544A1

公开(公告)日：2017-04-06

申请号：US15229697

申请日：2016-08-05

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R3/06

CPC classification number: H04R3/06

Abstract: Provided is an impedance conversion circuit of a condenser microphone which includes a first electron tube operated in grounded-cathode mode to whose grid an output signal from a condenser microphone unit is inputted, and from whose plate a signal is outputted, a first emitter-follower circuit configured to receive a signal based on a plate output of the first electron tube and amplify a current, and a first feedback element configured to transmit a feedback signal from an emitter of a transistor configuring the first emitter-follower circuit to the grid of the first electron tube. And the impedance conversion circuit can achieve a wide dynamic range while using a voltage amplifier circuit with an electron tube at an initial stage

公开(公告)号：US20160337753A1

公开(公告)日：2016-11-17

申请号：US15145411

申请日：2016-05-03

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R3/10 ,  H04R29/00 ,  H04R21/02

CPC classification number: H04R31/00 ,  H04R1/028 ,  H04R19/04

Abstract: A condenser microphone utilizes a PLL circuit which includes a phase shift oscillator having an RC network that uses an electrostatic capacitance of the condenser microphone unit varying upon reception of a sound pressure and a resistance value of a variable resistance element; a phase detection unit that compares phases of a fixed frequency signal from a reference signal oscillator and an oscillation output signal from the phase shift oscillator and outputs a phase difference signal corresponding to a phase difference; a loop filter that extracts a control signal when receiving the phase difference signal from the phase detection unit; and a driver circuit that changes a resistance value of the variable resistance element provided in the phase shift oscillator based on the control signal obtained from the loop filter. The control signal obtained from the loop filter of the PLL circuit is used as an audio output signal.

Abstract translation: 电容式麦克风采用PLL电路，该PLL电路包括具有RC网络的相移振荡器，该RC网络使用在接收到声压和可变电阻元件的电阻值时变化的电容式麦克风单元的静电电容; 相位检测单元，其比较来自参考信号振荡器的固定频率信号和来自所述移相振荡器的振荡输出信号的相位，并输出与相位差对应的相位差信号; 环路滤波器，当从相位检测单元接收到相位差信号时，提取控制信号; 以及驱动电路，其基于从环路滤波器获得的控制信号来改变设在相移振荡器中的可变电阻元件的电阻值。 将从PLL电路的环路滤波器获得的控制信号用作音频输出信号。

公开(公告)号：US20160241952A1

公开(公告)日：2016-08-18

申请号：US15041620

申请日：2016-02-11

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R1/34 ,  H04R1/02

CPC classification number: H04R1/342

Abstract: An acoustic tube attaching unit that attaches an acoustic tube to a side of a main body case where a microphone unit is mounted. The acoustic tube attaching unit includes first and second elastic members lying between a fixing member and a washer, and bolts that tight the fixing member and the washer in an axial direction. A peripheral edge surface of the first elastic member is formed in a linear manner, and a peripheral edge surface of the second elastic member is formed in a recessed surface manner, so that the peripheral edge surface of the first elastic member protrudes in an outer peripheral direction by elastic deformation by the tightening of the bolts. The acoustic tube is attached to the main body case side by fixing action to an inner wall of the acoustic tube by the protrusion of the first elastic member in the outer peripheral direction.

Abstract translation: 声管连接单元，其将声管附接到安装有麦克风单元的主体壳体的一侧。 声管安装单元包括位于固定构件和垫圈之间的第一和第二弹性构件以及沿着轴向紧固固定构件和垫圈的螺栓。 第一弹性部件的周缘面呈直线状地形成，第二弹性部件的周缘面以凹面形成，使得第一弹性部件的周缘面突出于外周 通过螺栓的紧固弹性变形的方向。 声管通过第一弹性构件在外周方向上的突出部的固定作用附着到主体壳侧。

公开(公告)号：US20150341720A1

公开(公告)日：2015-11-26

申请号：US14718568

申请日：2015-05-21

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R1/32 ,  H04R19/01

CPC classification number: H04R1/326 ,  H04R1/04 ,  H04R1/40 ,  H04R19/016 ,  H04R19/04

Abstract: Provided is a variable directivity electret condenser microphone that can simplify a circuit configuration, and outputs an audio signal in a balanced manner, which includes electrically independent first and second electret condenser microphone units in which first and second fixed electrodes are arranged back to back and facing each other in a mutually non-conductive state, and first and second diaphragms are arranged facing the first and second fixed electrodes with fixed intervals therefrom respectively, a first impedance converter having an input terminal connected to the first fixed electrode, and a first buffer circuit connected to the first impedance converter, a second impedance converter having an input terminal connected to the second fixed electrode, and a second buffer circuit selectively connected to the second impedance converter, and a directivity variable switch that can alternatively select a mode from at least a first directivity mode to a third directivity mode.

Abstract translation: 提供了一种可变方向驻极体电容麦克风，其可以简化电路配置，并且以平衡的方式输出音频信号，其包括电独立的第一和第二驻极体电容式麦克风单元，其中第一和第二固定电极背靠背布置 彼此处于相互不导通的状态，并且第一和第二隔膜分别以固定的间隔布置成面对第一和第二固定电极，第一阻抗转换器具有连接到第一固定电极的输入端子和第一缓冲电路 连接到所述第一阻抗转换器的第二阻抗转换器，具有连接到所述第二固定电极的输入端子的第二阻抗转换器和选择性地连接到所述第二阻抗转换器的第二缓冲电路，以及可选择地从至少一个 第一指向性模式到第三方向性模式。

公开(公告)号：US20150312682A1

公开(公告)日：2015-10-29

申请号：US14680696

申请日：2015-04-07

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R23/00

CPC classification number: H04R19/04 ,  H01R13/703 ,  H04R1/021 ,  H04R1/04 ,  H04R3/007 ,  H04R19/016 ,  H04R31/006

Abstract: A microphone unit includes a first connection terminal abutting on a terminal on a microphone body side, a second connection terminal connected on a fixed electrode side, and a coil spring provided between the first connection terminal and the second connection terminal, compressed upon coupling of the microphone unit and the microphone body, and urging the first connection terminal toward the microphone body. When the microphone unit and the microphone body are coupled, the first connection terminal and the second connection terminal are connected, and the first connection terminal is connected to the terminal on the microphone body side. When the microphone unit and the microphone body are separated from each other, the first connection terminal and the second connection terminal are separated from each other by an urging force of the coil spring.

Abstract translation: 麦克风单元包括邻接在麦克风主体侧的端子上的第一连接端子，连接在固定电极侧的第二连接端子和设置在第一连接端子和第二连接端子之间的螺旋弹簧， 麦克风单元和麦克风主体，并且朝向麦克风主体推动第一连接终端。 当麦克风单元和麦克风主体耦合时，第一连接端子和第二连接端子被连接，并且第一连接端子连接到麦克风主体侧的端子。 当麦克风单元和麦克风主体彼此分离时，第一连接端子和第二连接端子通过螺旋弹簧的推动力彼此分离。

公开(公告)号：US20150098592A1

公开(公告)日：2015-04-09

申请号：US14312002

申请日：2014-06-23

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R19/01 ,  H04R31/00

CPC classification number: H04R19/01 ,  H04R1/10 ,  H04R7/00 ,  H04R19/013 ,  H04R19/016 ,  H04R31/00 ,  Y10T29/49005

Abstract: In an electrodynamic acoustic transducer which uses a surface potential of an electret dielectric film as a polarization voltage, prevention of partial suctional adhesion of a diaphragm caused by variation in surface potential across the electret dielectric film is ensured in a simple way. In an electrodynamic acoustic transducer including a diaphragm and a fixed pole which are arranged with a predetermined interval so as to face each other, a facing surface of either one of the diaphragm and the fixed pole having an electret dielectric film, a surface of the electret dielectric film is divided into a plurality of segment regions, and a predetermined surface potential is given to each of the segment regions by a polarization processing unit.

Abstract translation: 在使用驻极体电介质膜的表面电位作为极化电压的电动式声学换能器中，以简单的方式确保了由驻极体电介质膜两端的表面电位的变化引起的隔膜的部分吸附粘附的防止。 在包括隔膜和固定极的电动式声学换能器中，其以预定间隔彼此相对地布置，所述隔膜和固定极中的任一个的相对表面具有驻极体介电膜，驻极体的表面 电介质膜被分割为多个区域区域，并且通过偏振处理单元向每个区段区域赋予预定的表面电位。

公开(公告)号：US20130287223A1

公开(公告)日：2013-10-31

申请号：US13775981

申请日：2013-02-25

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R3/00

CPC classification number: H04R3/00 ,  H04R3/005

Abstract: The present invention provides a unidirectional microphone by adding an output from an omnidirectional condenser microphone unit and an output from a bi-directional ribbon microphone unit together. A condenser microphone unit 10 and a ribbon microphone unit 20 are connected in series via a step-up transformer 30, and the respective sound signals from the microphone units 10 and 20 are added together and are output from a source S of an FET 14.

Abstract translation: 本发明通过将来自全向电容麦克风单元的输出和来自双向带状麦克风单元的输出相加在一起来提供单向麦克风。 电容麦克风单元10和带状麦克风单元20通过升压变压器30串联连接，并且来自麦克风单元10和20的相应声音信号相加在一起，并从FET 14的源极S输出。