This poper descrihes a method for linking the AUTOCAD Drafing Package ('AUTOCAD'). a well-known computer-aided design sofrware package for arehiteets, with an acoustic ray-tracing program, in detail. Two application ptograms. EXTATTDX and EXTVERTE. have been worked out to retrive useful information for a ray-tracing program from the drawing files of AUTOCAD. The flow chart of the EXTATTDXD program and some application examples are given. This linking not only speeds up the acousties andalysis proeess for a rariety of halls, but also enables us to test the acoustic properties for buildingx at design stage. The retriered information can also be used for other application purposes.

对四城市17个居住区居民进行居住区生活与环境质量调研，在微机上开发了数据库来储存调查数据并进行多元统计分析。居民对影响居住环境诸因素重要性排序结果表明，安全及三废污染列为最重要的因素，其次是物理环境和商业服务业设施，第三是交通和环境卫生，第四是绿化和文教乐设施，最后才是景观和其他（地点等）。这说明居民有将较不满意的因素赋予较大权重的倾向，通过层次分析法求出各因素的权重向量并用模糊集进论对各居住小区生活与环境质量进行了综合评价。

By summing up the opinions of many experts about concert hall acoustics, this paper suggests a more complete factor set and more detailed membership functions for the fuzzy set evaluation of concert hall acoustics. The mean forte sound-pressure level LpF representative of subjective loudness, is introduced in the factor set in addition to those already considered previously.

用等效车的方法将K Takagi等人提出的单车道单车种负指数的分布的车流噪声计算公式加以推广，使之可应用于对多车道多车种自由车流的累计分布噪声级Lx和等效声级LΦp作出预报多次应用的结果证实本计算公式的精度可满足实用要求。

本文给出一种一次性综合模拟多车道种随机车流噪声的计算机模拟的简化方法，详细推导了用于预报部分车辆成组行驶的随机车流噪声的数学模型（M2模型）的车头时距分布函数,概率密度函数和平均时距表达式及相应的随机数变换式。文中还给出了计算机程序框图，并将M2模型模拟结果与据车头时距为负指数分布的M1模型的模拟结果作了比较。计算机程序是根据我国交通噪声测量统计方法编制的，只要在程序中输入车流量、车流成分，测点离各车道及等效车道的距离诸参量,计算机便能自动输出L10、L50、Leq等声级值*，预报值与实测值良好一致。