ULTRASONIC SPATIAL SENSING AID FOR THE BLIND

建议的超声空间感知辅助盲人 是一种电子旅行辅助设备， 与空间背景信息，一个必要的先决条件， 迁移率该装置根据回声定位原理工作， 超声波被环境反射， 对象返回的超声波回波将 电声转换成可听的声音编码， 负责空间定位的声音定位线索的完整集合 听证会 给盲人旅行者的主观印象 使用所提出的援助将是对象反映 超声波束将作为外部声源被听到 定位在三维空间中。 这样，盲人旅行者 将能够更充分地了解空间方面的 外部环境，使流动性更容易， 信心

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.