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混響室
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    混響實驗室依據GB/T 20247-2006(ISO 354:2003)建設,主要測試、研究材料或結構的吸聲性能,也可用於測量小型聲源的聲功率和小型隔聲罩的插入損失。
    本實驗室為房中房結構,內層測試房間與外層房間除下方采用減震彈簧與基礎柱連接外,其餘麵完全和外界隔離,實驗室內若不發出聲音的情況下背景噪聲低至19dB(A),房中房結構特點是在測試時不受外界的噪聲和震動的影響,提高測試誤差和精度。

    

     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.

 

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