ULTRASONIC SPATIAL SENSING AID FOR THE BLIND

建议的盲人超声空间传感辅助设备是一种 为盲人旅行者设计的电子旅行辅助设备 空间背景信息，这是流动性的必要前提。 该设备根据回声定位原理工作，通过广播 由环境物体反射的超声波。回归之路 超声波回声将通过电声转换为可听声 用全套声音定位提示编码的声音 负责空间听力。给人留下的主观印象 使用拟议援助的盲人旅行者将是该对象 建议将反射超声束的辅助对象 反射的超声束将被作为外部源听到 声音定位在三维空间中。就这样，盲人旅行者 将能够更充分地理解 外部环境，使移动性更轻松、 自信。

The proposed Ultrasonic Spatial Sensing Aid for the Blind is an electronic travel aid designed to provide the blind traveler with spatial contextual information, a necessary prerequisite for mobility. The device operates on the echolocating principle, by broadcasting ultrasound which is reflected by environmental objects. The returning ultrasonic echoes will be electroacoustically transformed into audible sounds encoded with the complete set of sound localization cues responsible for spatial hearing. The subjective impression created for the blind traveler using the proposed aid will be that objects reflecting the ultrasound beam will be proposed aid will be that objects reflecting the ultrasound beam will be heard as external sources of sound positioned in 3-dimensional space. In this way, the blind traveler will be able to more fully appreciate the spatial aspects of the external environment, enabling mobility with greater ease and confidence.