| 曾向阳,陈克安,孙进才.狭长封闭声场的近似圆锥束跟踪法模拟研究[J].,2003,22(1):39-43 |
| 狭长封闭声场的近似圆锥束跟踪法模拟研究 |
| Prediction of sound fields in long enclosures by using an approximate cone-beam tracing method |
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| 中文摘要: |
| 狭长空间声传播特性研究对于地铁、长廊等场所的音质设计是非常有意义的。本文提出了模拟狭长封闭声场的近似圆锥束跟踪法,利用它研究了矩形和非矩形狭长声场的空间分布特性。仿真结果表明:对于狭长声场,经典扩散场理论并不适用,而利用本文的数值模拟方法能正确地分析这类声场的特性。 |
| 英文摘要: |
| The study on sound distribution in long and narrow enclosures is very valuable to the design of such site as subway station. In this paper, an approximate cone beam tracing algorithm is designed to model a non-diffused long and narrow sound field based on the geometric acoustics. The predicted results are compared with those calculated by the typical theory of diffused sound field and those obtained from Yang’s model. It can be concluded that our algorithm correctly models the spatial characteristics of long and narrow sound fields. |
| DOI：10.11684/j.issn.1000-310X.2003.01.010 |
| 中文关键词: 近似圆锥束跟踪 狭长声场 数值模拟 |
| 英文关键词: Approximate cone beam tracing Long enclosed sound field Numerical simulation |
| 基金项目:西北工业大学博士创新基金资助 |
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