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混响室
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    混响尝试室根据GB/T 20247-2006(ISO 354:2003)扶植,首要测试、研讨资料或布局的吸声机能,也可用于丈量小型声源的声功率和小型隔声罩的拔出丧失。
    本尝试室为房中房布局,内层测试房间与外层房间除下方接纳减震弹簧与根本柱毗连外,其他面完整和外界断绝,尝试室内若不收回声响的情况下背景噪声低至19dB(A),房中房布局特色是在测试时不受外界的噪声和震撼的影响,进步测试偏差和精度。

    

     The reverberation laboratory was built according to GB/T 20247-2006(ISO 354:2003), aiming at testing and studying the sound absorption property of material and structure, as well as the acoustical power of small-size sound source and the insertion loss of small-size acoustic hood. 
     The reverberation laboratory is of the house-in-house structure; in addition to the damping springs and the foundation columns used at the bottom, all other sides of internal test room and external room are completely isolated from the outside. Under such circumstance as no sound source in the laboratory, the background noise may lower to 19dB (A). The house-in-house structure is characterized by no impact from the outside noise and vibration and the test deviation avoided and accuracy greatly improved.