Tapping sounds by echolocation and body sway by the blind

我们试图演示身体摆动和虚拟敲击声音、动作之间的关系。我们开发了一个虚拟的敲击声音呈现系统，听者通过回声定位感知物体。实验条件为：(1)前后方向的敲击动作，(2)来回方向的虚拟敲击声运动和环境噪声(粉色噪声)，(3)无声，(4)横向的虚拟敲击声运动，(5)横向的虚拟敲击声运动和环境噪声。结果表明：(1)没有声音条件表明身体没有摇摆；(2)身体摇摆对虚拟声音的来回和横向运动都有反应，即使存在个体差异，(3)虚拟敲击声运动和环境噪声条件使盲人受试者的摆动比虚拟敲击声运动更大，我们还尝试开发了一种仅使用粉色噪声呈现虚拟空间的声学系统。我们让一位盲人进行评估，以感知他面前的空间。然而，它很难辨认出来。我们必须考虑这个系统。

We attempted to demonstrate the relationship between body sway and virtual tapping sounds motion. We developed a virtual tapping sounds presentation system which listeners perceive objects by echolocation. Experimental conditions were : (1)tapping motions in back and forth direction, (2)virtual tapping sounds motion and environmental noise (pink noise) in back and forth direction, (3)no sound, (4)virtual tapping sounds motion in lateral direction, and (5)virtual tapping sounds motion and environmental noise in lateral direction.Results were : (1)no sound condition indicated no body sways, (2)body sway responded to virtual sounds motion both in back and forth direction and lateral direction even if there individual difference, (3)virtual tapping sounds motion and environmental noise condition made blind participants larger sways rather than virtual tapping sounds motion.We also attempted to develop acoustic system which presented a virtual interspace using only pink noise. We asked a blind person to evaluate to perceive an interspace in front of him. However, it was hard to recognize it. We have to consider this system.