Hiranaka Y, Yamasaki H
J Acoust Soc Am. 1983 Jan;73(1):291-6. doi: 10.1121/1.388809.
Acoustical impulse responses of the external ear system are measured in order to investigate human three-dimensional auditory localization. A sound source of electric spark discharge is presented in nine directions for each of four vertical planes, 1.5 m from the center of the subject's head. The results show that a human pinna works as a compound sound reflector which produces major reflected components within 350 microseconds. The relationship between the direction of the sound source and the impulse response is clearly shown by the use of an envelope formation technique and radial ray displays.
为了研究人类的三维听觉定位，对外耳系统的声学脉冲响应进行了测量。在距离受试者头部中心1.5米处，针对四个垂直平面中的每一个，在九个方向上呈现电火花放电声源。结果表明，人类耳廓起到复合声音反射器的作用，在350微秒内产生主要反射成分。通过使用包络形成技术和径向射线显示，可以清楚地展示声源方向与脉冲响应之间的关系。
