中文摘要：

在建筑室内增加大量吸声,可显著降低室内混响时间和噪声声压级,从而改善室内声环境。该文利用四川大学可变混响时间声学实验室,创设了室内吸声降噪的实验教学。首先介绍了该实验教学的实验原理、教学环境和教学过程,然后辅以一个实验案例,着重分析了该实验教学的价值。在该实验教学中,学生除了定量地测试声学参数外,还将真切地感受到同一空间同一声源在不同的吸声状况下产生的不同声环境效果和不同的噪声水平。该实验教学加深了学生对抽象的室内吸声降噪原理和公式、室内声环境的影响因素和控制方法的理解。

英文摘要：

Increasing the amount of sound absorption in the building can significantly reduce the indoor reverberation time and sound pressure level of noise, which is to achieve the purpose of improving the indoor sounds environment. The experimental teaching of indoor noise reduction through sound absorption was established by taking advantage of the acoustic experimental room with adjustable reverberation time in Sichuan University. Firstly, the experimental theory, teaching enviromneut and teaching process of this experimental teaching were introduced. Then, the value of this experimental teaching was analyzed with a case of experimental results. In this experimental teaching, students are required quantitatively test the acoustic parameters, and they truly feel the different effects of in- door acoustics environment and noise just in the same room and under the same sound source. It would help students deeply understand the abstract theory and formula of indoor noise reduction through sound absorption, the influence factors and control method of indoor acoustic environment.