平均吸声系数

平均吸声系数，平均吸声率

Average sound absorption coefficient

平均吸声系数可达0.4～0.52，且随孔径的减小，孔隙率、厚度的增大，吸声性能提高。

Its average sound absorbing coefficient reaches 0.4 ~ 0.52 . When its pore diameter decreases , or its porosity and thickness increase , the sound absorbing property may be improved .

在吸声性能方面，本论文初步探讨了多孔混凝土在不同空隙率，不同集料级配、不同试件厚度以及人工孔隙的条件下，其不同频率的吸声系数变化规律和综合平均吸声系数变化规律。

For the sound absorption properties , the influence of target void ratio , the sizes of aggregate and the thickness of porous concrete to sound absorption coefficient and arithmetic mean of the absorption coefficients have been studied too .

计算了吸声处理前后的平均吸声系数和房间的混响时间.并用比较其混响时间的方法，评价房间音质的优劣。

The reverberation times and the mean sound absorption coefficients before and after the sound absorption treatment are calculated , and the acoustics of the theatre are discussed by comparing the reverberation time before and after the sound absorption treatment .

本文介绍了MonteCarlo方法模拟室内扩散声场的原理，模拟计算了混响室声场中的能量密度衰减曲线、能量脉冲响应、平均自由程及吸声系数等。

This paper reviews the principles of the Monte Carlo method for simulating the diffuse sound field and presents some results of the diffuse sound field in reverberation room , such as energy density decay function , energy impulse response , mean free path and absorption coefficient .

与此同时，平均消声量增加了23dB，平均吸声系数增加了07，明显改善了吸声性能，可满足实际工程需要。

Meanwhile , the average transmission loss increases to 23 dB , and the average sound absorption coefficient increases 0.7 . So the structure has obviously improved the sound absorption performance , it and the purpose is realized of broadband resonance sound absorption of low frequency .