公开(公告)号：US20150201264A1

公开(公告)日：2015-07-16

申请号：US14476231

申请日：2014-09-03

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R1/08

CPC classification number: H04R19/04 ,  H04R1/342

Abstract: An electrode extraction terminal extracting a generated current by contacting with a fixed electrode is disposed inside a unit case, and can change from a cardioid to a hyper cardioid. The electrode extraction terminal includes an electrode rod portion having a projection portion at a tip side; and a pedestal portion having a flat surface surrounded by a peripheral wall portion having a sitting height thereof same as that of the projection portion of the electrode rod portion, and facing the fixed electrode under a shape with a size showing a cardioid in directivity, wherein the flat surface is located orthogonal to an axis direction of the electrode rod portion. In a peripheral surface area of one or more sound holes of the flat surface, a minute concave-convex surface is provided to reduce an acoustic resistance value to show a hyper cardioid in directivity.

Abstract translation: 通过与固定电极接触来提取生成电流的电极提取端子设置在单位壳体内，并且可以从心形变为高心形。 电极引出端子包括在尖端侧具有突起部的电极棒部， 以及具有被具有与电极棒部的突出部相同的坐标高度的周壁部分包围的平面的基座部分，并且朝向定向尺寸显示心形的形状的固定电极，其中， 平坦表面与电极棒部的轴线方向正交。 在平坦表面的一个或多个声孔的周边表面区域中，设置微小的凹凸表面，以降低声阻值，从而在方向性上显示出超心形。

公开(公告)号：US20150117693A1

公开(公告)日：2015-04-30

申请号：US14336374

申请日：2014-07-21

Applicant: KABUSHIKI KAISHA AUDIO-TECHNICA

Inventor： Hiroshi AKINO

IPC: H04R1/10

CPC classification number: H04R1/1058 ,  H04R1/1008 ,  H04R1/1075 ,  H04R1/28

Abstract: Provided is a dynamic headphone that has a small size but makes a larger-diameter headphone unit mountable thereon, the dynamic headphone including a highly reliable acoustic channel that acoustically connects a front air chamber and a back air chamber to each other. A headphone case 20 houses a headphone unit 50 therein, and includes a back air chamber C2 on a back side of the headphone unit 50. The headphone case 20 includes: a back air chamber forming portion 40 that forms the back air chamber C2; and a mount portion 30 integrally provided to an opening end of the back air chamber forming portion 40, the headphone unit 50 being mounted in the mount portion 30. An acoustic channel 70 is provided between the mount portion 30 and the headphone unit 50.

Abstract translation: 提供了具有小尺寸但是安装在其上的较大直径耳机单元的动态耳机，动态耳机包括将前空气室和后气室彼此声学连接的高度可靠的声通道。 耳机壳体20在其中容纳耳机单元50，并且在耳机单元50的后侧包括后空气室C2。耳机壳体20包括：后空气室形成部分40，其形成后气室C2; 以及一体地设置在背气室形成部分40的开口端的安装部分30，耳机单元50安装在安装部分30中。声道70设置在安装部分30和耳机单元50之间。