In the acoustical design, it can be used to control the reverberation time, eliminate echo, flutter echo, sound focusing etc. In the noise control, it can be used in sound absorption and noise reduction in the room. 在音质设计中用于控制混响时间,消除回声、颤动回声、声聚焦等音质缺陷;在噪声控制中用于室内吸声降噪以及通风空调系统和动力设备排气管中的管道消声等。