20. Pinna with anthropometric concha and ear canal

The external shape of the pinna is identical to that of the standardized KEMAR pinna,  but concha and canal have been modified so that they closely mimic the properties of a real human ear. The ear canal has been extended and is an integral part of the pinna that now seals directly against the ear simulator. Like the human ear, the ear canal now has the 1st and 2nd bend, and the interface with the concha is oval.

耳廓的外部形状与标准化的KEMAR耳廓相同，但GRAS已把外耳和耳道修改过来。所以KB5000可以很好地模仿真人耳朵的特性。经过修改后，耳道已延长，成为了耳廓的一部分，并直接密封在耳模拟器上。KB5000与人耳一样，耳壳的界面是椭圆形的，並且具有第一和第二弯曲的耳道。

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This shape makes it possible to achieve good fit and sealing with anatomically shaped ear-bud headphones, in-ear hearing protectors, and insert hearing aids. Controlling the insertion depth is easy, leading to better insertion consistency and improved repeatability of measurements.

KB5000的形状使得可以通过解剖学形状的耳塞式耳机、入耳式听力保护器和插入式助听器实现良好的贴合和密封效果。使控制耳机插入的深度变得容易，从而提高耳机插入的一致性并提高测量的可重复性。

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The outer pinna has the same shape as the standardized pinna, but the flexibility has been improved to better mimic the way the human ear collapses when supra-aural and circum-aural earphones are mounted. When measuring the frequency response of these types of headphones, more reliable and repeatable measurements can be achieved because of the improved collapsability of the pinna. 

外耳廓具有与标准化耳廓相同的形状，但灵活性已得到改善，以更好地模拟人耳并改善了在安装耳罩式耳机和耳罩式耳机时的塌陷方式。由于耳廓的可折叠性改进了，当测量这些类型耳机的频率响应时，可以实现更可靠和可重复的测量。

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In addition to the traditional push mounting from the outside, the pinna is secured with two screws from the inside of KEMAR's head. These two screw ensure that the pinna is held firmly in place. Therefore, it seals perfectly against the ear simulator and the head, and it is therefore possible to mount and dismount DUTs repeatedly without compromising the seal.

除了从外部进行传统的推入式安装外，KB5000还可用KEMAR头部内侧的两个螺钉固定。这两个螺钉确保耳廓牢固地固定到位。因此，它能完美地密封在耳模拟器和人头模拟器上，也可以重复地安装和拆卸待测物(DUT) 而不损害其密封性。

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