文章摘要
曾向阳,孙进才,陈克安.室内障碍物对声传播作用的计算机模拟研究[J].声学技术,2003,(1):48~51
室内障碍物对声传播作用的计算机模拟研究
Study on effects of indoor barriers upon sound propagation with computer simulation
投稿时间:2001-05-23  修订日期:2001-07-27
DOI:
中文关键词: 障碍物  声传播  计算机模拟
英文关键词: barriers  sound propagation  computer simulation
基金项目:国家自然科学基金资助;西北工业大学博士创新基金资助
作者单位
曾向阳 西北工业大学航海工程学院, 西安, 710072 
孙进才 西北工业大学航海工程学院, 西安, 710072 
陈克安 西北工业大学航海工程学院, 西安, 710072 
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中文摘要:
      计算声场脉冲响应是数字式可听化研究的核心工作。文章研究了室内声场中存在障碍物的情况下,如何用数值方法模拟脉冲响应的问题。首先提出了根据障碍物特点进行分类研究的方法,然后利用声线跟踪技术和统计学方法,设计了几类障碍物(屏风、隔墙等)情况下模拟声场分布的具体算法。在这些算法中,对镜面反射、扩散反射、散射和透射等现象作了不同程度的考虑。最后,将一个复杂声场模型的仿真计算结果和理论分析作比较,检验了算法的可行性。
英文摘要:
      In the study of digital auralization,a special computer model should be set up to simulate the impulse response of an enclosure.In previous studies,behaviors of indoor barriers have not been fully investigated.This paper presents different methods for simulating the behaviors of various barriers including screens,a small number of irregular barriers,an intervening wall and a lot of disorderly placed barriers.Corresponding algorithms are developed based on the ray tracing technique and statistical method.Phenomena such as specular reflection,diffused reflection,scattering and transmission have been considered.These algorithms are testified by simulation of a complicated model.
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