1) sound transmission loss
隔声量
1.
A new method of sound transmission loss measurement using a modified four-microphone impedance tube was proposed in this paper to investigate the microporous membrane s acoustic performance.
为研究微孔薄膜材料的透声性能,搭建了改进的四传声器阻抗管隔声量测试系统,推导了阻抗管中隔声量的传递损失矩阵算法,此算法可以有效地分离隔声管中透射波与二次反射波,使测试结果不受隔声管末端材料吸声性能的影响,与原四传声器算法相比物理意义更明确。
2.
FEM calculated the sound transmission loss and revealed the reasons that the sound transmission loss had dropped in resonance region.
用有限元分析方法计算了圆形薄板在夹持和自由放置等情况下的振动模态,揭示了单层板在共振区隔声量下降的机制,并计算出试样在共振区的隔声量,与实验结果符合良好。
2) sound insulation
隔声量
1.
Based on the acoustical basic theory,a formula is derived to study sound insulation performance of plate in air with a steady flow.
根据声学基本理论,具体推导了有流条件下匀质中间层隔声量的计算公式;详细讨论了流速影响隔声量的5种途径。
2.
We compared and analyzed the influences on the sound Insulation of the wall under the circumstances of with glass wool between the panels or without it and by changing the layer amounts of the panels on the two side of the keels.
从二层增加到四层,隔声量提高6dB;板墙中增加玻璃棉夹芯层,隔声量也提高6dB。
3.
In addition,the authors also research on influence about radix board,add ons board ply and add ons board material for sound insulation quantity.
利用统计能量法估算了有限结构复合阻尼钢板的隔声量 ,研究了基板、附加板厚度和附加板材料对隔声量的影响。
3) transmission loss
隔声量
1.
Introduces the principle of determination of acoustics transmission loss coefficient of materials by four-microphone method.
介绍了在阻抗管中对材料的垂直入射隔声量的测试原理,详细介绍了使用四传感器法测试隔声量的测试方法。
4) high sound insulation
高隔声量
6) weighted sound isolation
计权隔声量
补充资料：声量
【声量】
（术语）圣教量之异名。(参见：量)
（术语）圣教量之异名。(参见：量)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条