摘要
本文在理论及试验的基础上对带有转鼓的消声室的声学特性进行了研究。通过理论设计及实施后的试验验证，结果表明：辅设吸声材料前后房间的声压差达１４ｄＢ，混响成分明显减少，设计达到了预期的效果。
This paper studies the acoustic characteristics of muffillg chamber with drum theoretically and experimentally.Based on theoretical design and experimental verification,the results show that the sound pressure difference before and after laying sound-absorbingmaterial is about 14dB.The reverberation reduces obviously and the design has reached the desired effectiveness.
关键词
声学特性
声压
混响
消声室
汽车噪声
Acoustic characteristics
Sound Pressure
reverberation
