| 用脉冲声能衰变与脉冲反向积分法求混响时间之比较 |
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| 引用本文： | 张红虎.用脉冲声能衰变与脉冲反向积分法求混响时间之比较[J].电声技术,2005(3):13-16. |
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| 作者姓名： | 张红虎 |
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| 作者单位： | 华南理工大学建筑学系,广东,广州,510641 |
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| 摘 要： | 为简化使用脉冲响应平方反向积分求混响时间，有人提出直接使用脉冲声能衰变率求混响时间的方法。文中对直接使用脉冲声能衰变与使用反向积分法进行了比较，讨论了直接使用脉冲声能衰变求混响时间的不稳定性，探讨了使用反向积分法更为精确的原因。
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| 关 键 词： | 脉冲响应 混响时间 测量 |
| 文章编号： | 1002-8684(2005)03-0013-04 |
| 修稿时间： | 2004年11月4日 |
Comparison between Integrated Impulse Response Method and Impulse Response Decay Method for Reverberation Time Measurement |
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| ZHANG Hong-hu.Comparison between Integrated Impulse Response Method and Impulse Response Decay Method for Reverberation Time Measurement[J].Audio Engineering,2005(3):13-16. |
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| Authors: | ZHANG Hong-hu |
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| Abstract: | As a simplification of the reverberation time (RT) measurement method using integrated impulse response method (IIRM),it is suggested that the decay rate of measured impulse response could be directly used to calculate the RT. The simplified method could be named impulse response decay method (IRDM). In this paper, the two methods, IIRM and IRDM, are compared, mainly focusing on the stability of the methods. The reason of why the IIRM seems more stable than the IRDM is explained. |
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| Keywords: | impulse response reverberation time measurement |
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