ULTRASONIC SPATIAL SENSING AID FOR THE BLIND

建议的超声波空间传感盲人辅助器 是一种电子旅行助手，旨在为盲人旅行者提供 有了空间背景信息，这是 机动性。该设备根据回声定位原理工作，通过 传播环境反射的超声波 物体。返回的超声回波将是 电声转换为可听声音，编码为 一套完整的声音定位线索负责空间 听证。给盲人旅行者留下的主观印象 使用提议的辅助对象将是反映 超声束将作为外部声源被听到 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 electron 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 ultrasonic 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.