| 孟子厚.厅堂声学测量中不同激励声源的比较[J].,2005,24(1):19-23 |
| 厅堂声学测量中不同激励声源的比较 |
| Comparison of acoustic measurements with different sound sources in a concert hall |
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| 中文摘要: |
| 基於脉冲响应积分的音乐厅和剧院观众厅声学特性的测量目前有三种使用不同激励声源的测试方法:人工脉冲声源、伪随机噪声序列(MLS)、以及用正弦扫频信号。这些技术各有其优缺点,在实际应用中为了方便根据具体情况选择不同的激励声源,通过在一个音乐厅现场的实测数据比较丁三种声源的实测结果,发现对混响时间测量三种不同的激励声源给出的结果基本一致,但是对明晰度和一些其他的指标,脉冲声源给出的结果与用MLS和扫频信号给出的结果有较明显的差别。对实际中如何选择具体的技术也做了建议。 |
| 英文摘要: |
| There are three types of sound source for acoustic test in theater and concert hall for the integration of sound impulse response. The sound sources used are the true impulse source, the pseudo random white noise and the sine sweep signal. These techniques are compared, based on our measured data in a multi-purpose concert theater. It was observed that for the reverberation time, the results are the same for the three techniques. But for the clarity and other parameters, the result given by the true impulse source is different from that given by LMS and the sine sweep techniques. Suggestion is made for selecting which of the test techniques. |
| DOI：10.11684/j.issn.1000-310X.2005.01.007 |
| 中文关键词: 音乐厅 声学测量 脉冲声源 伪随机噪声 扫频信号 |
| 英文关键词: Concert Hall Acoustic Measurement Impulse Sound Source Pseudo Ran dom Noise Sine Sweep Signal |
| 基金项目: |
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