混响实验室

混响实验室依据GB/T 20247-2006(ISO 354：2003)建设，主要测试、研究材料或结构的吸声性能，也可用于测量小型声源的声功率和小型隔声罩的插入损失。
  实验室一般为房中房结构，内层测试房间与外层房间除下方采用减震弹簧与基础柱连接外，其余面完全和外界隔离，实验室内若不发出声音的情况下背景噪声低至19dB（A），房中房结构特点是在测试时不受外界的噪声和震动的影响，提高测试误差和精度。
    

     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.