Experimental Teaching of Indoor Noise Reduction Through Sound Absorption

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 environment 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 indoor 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.