【摘要】 由室内混响时间的计算公式分析知,平均吸声系数表明混响时间与声波的频率有关;探讨了各种吸声材料的频率特性;提出了在室内声学装修设计中用试探法选择各种吸声材料时,必须计算倍频程中心频率的混响时间并与设计值相符,才能得到理想的混响时间频率特性。更多还原

【Abstract】 According to the analysis on the given parameter appeared in the calculation formula of indoor reverberation-time, the average acoustic absorptivity indicates the linking facts between the reverberation-time and the wave-frequency. This article discusses the frequency characteristics of various sound-absorbing materials, and puts forward that, when the application of "Trying Approach" in the choice of various sound absorbing materials is adopted during indoor acoustic decoration and design, we must work out the reverberation-time of each centric frequency of octave, which should agree with the data of designing and then we can obtain ideal frequency-characteristic of reverberation-time.更多还原