| 坐席低谷效应的时域有限差分多项模拟 |
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| 引用本文： | 卢义刚,余光正. 坐席低谷效应的时域有限差分多项模拟[J]. 应用声学, 2008, 27(3): 188-194 |
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| 作者姓名： | 卢义刚 余光正 |
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| 作者单位： | 华南理工大学物理科学与技术学院,广州,510640 |
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| 摘 要： | 介绍了交错网格下,以声压和质点振动速度为声场参量的室内声学时域有限差分递推格式,给出了在建筑边界截断计算区域的边界条件差分格式。在水平地面房间模型下,应用时域有限差分法模拟了坐席低谷效应对于空间和时间的多种特性;此外,模拟了地面起坡时的低谷效应。
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| 关 键 词： | 时域有限差分 坐席低谷效应 脉冲响应 |
| 修稿时间： | 2006-12-31 |
Various simulations of the seat dip effect using finite-difference time-domain method |
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| LU Yi-Gang and YU Guang-Zheng. Various simulations of the seat dip effect using finite-difference time-domain method[J]. Applied Acoustics(China), 2008, 27(3): 188-194 |
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| Authors: | LU Yi-Gang and YU Guang-Zheng |
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| Affiliation: | LU Yi-Gang YU Guang-Zheng (School of Physics,South China University of Technology,Guangzhou 510640) |
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| Abstract: | In this paper,the time domain finite-difference recurrence formulas for acoustical pressure and particle velocity are introduced.The boundary conditions on the wall surfaces where the finite-difference calculations are cut off are given.Vari- ous specific properties of the seat dip effect are simulated in a room with horizontal floor.After improving the model to a room with sloping floor,the seat dip effect is also simulated successfully. |
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| Keywords: | Finite-difference time-domain Seat dip effect Impulse response |
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