ass日本风韵熟妇pics男人扒开女人屁屁桶到爽|扒开胸露出奶头亲吻视频|邻居少妇的诱惑|人人妻在线播放|日日摸夜夜摸狠狠摸婷婷|制服 丝袜 人妻|激情熟妇中文字幕|看黄色欧美特一级|日本av人妻系列|高潮对白av,丰满岳妇乱熟妇之荡,日本丰满熟妇乱又伦,日韩欧美一区二区三区在线

Sound intensity is vector, so it is meaningful to obtain 3-D sound intensity for identifying noise sources. On the basis of the traditional method of sound intensity measurement, a new 3-D sound intensity measurement method was proposed, the corresponding hardware and software were designed, and a virtual 3-D sound intensity measurement and analysis system was developed. An experiment on a speaker has been investigated to validate the validity of the system and the correctness of noise source localization.