| 谭军安.应用边界元法模拟厅堂中座席低谷效应[J].声学技术,2004,(2):102~105 |
| 应用边界元法模拟厅堂中座席低谷效应 |
| Simulation of seat-dip effect with boundary element method |
| 投稿时间：2003-08-30 修订日期：2003-11-25 |
| DOI： |
| 中文关键词: 边界元法 座席低谷效应 掠入射 |
| 英文关键词: boundary element methods (BEM) seat-dip effect grazing-incidence |
| 基金项目: |
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| 中文摘要: |
| 座席低谷效应是坐席中声波为掠入射时声场在低频段出现的选择性吸收的现象,它会影响厅堂中低频声的听感。文章用边界元法模拟了坐席低谷效应,考查影响座席低谷效应的因素。计算结果表明了坐席低谷效应在座席不同位置处的变化情况。最后列举了一些降低座席低谷效应的办法。 |
| 英文摘要: |
| The seat-dip effect occurs in certain rows in a theater due to selective sound attenuation caused by grazing-incidence at low frequencies, which seriously influences perception of bass sounds. This effect is simulated using the boundary element method (BEM). Factors affecting the seat-dip effect are studied. The results show how the seat-dip effect varies with different longitudinal or transverse distances between source and receivers. Examples for alleviating the seat-dip effect are given. |
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