@techreport{weko_218186_1,
   author	 = "Thilina,Dissanayake and 前川,卓也 and 原,隆浩",
   title	 = "Preliminary Investigation of Predicting the Distance and the Relative Velocirty of the Obstacles via Smartphone Active Sound Sensing for Pedestrian Safety",
   year 	 = "2022",
   institution	 = "Graduate School of Information Science and Technology, Osaka University, Graduate School of Information Science and Technology, Osaka University, Graduate School of Information Science and Technology, Osaka University",
   number	 = "7",
   month	 = "may"
}