摘要
针对水槽中设备的水下冲击噪声测试问题,指出了一种近似的测量方法。该方法在远离设备的位置布放水听器,拟合水槽中的声衰减规律,并据此进行声源级归算。结果表明:该方法可在水槽这种特殊环境下,实现设备水下噪声的摸底测试。测量时应避开设备附近干涉较强的区域,若采用标准声源及10元以上的水听器阵预先测量水槽中的衰减曲线则可以提高归算的精度。
An approximated method is proposed for the measurement of impact noise form equipment along the pentrough.The measurement hydrophones are away from the equipment along the pentrough in the method,and the sound attenuation in the pentrough is fitted for the reduction of the source level.The results show that the method can realize the preliminary test of equipment in this particular environment.The area with strong interference around the equipment should be avoided in measurement.It brings more accuracy if the sound attenuation of the pentrough is measured in advance by reference sound source and the hydrophone array with ten or more hydrophones.
作者
陈鸿洋
周进华
田波
郦茜
CHEN Hong-yang;ZHOU Jin-hua;TIAN bo;LI Qian(Science and Technology of Ship Vibration and Noise on Key Laboratory,China Ship Devel-opment and Design Center,Wuhan 430064,China)
出处
《声学技术》
CSCD
2014年第S01期182-185,共4页
Technical Acoustics
关键词
测试
冲击噪声
水槽
Testing
Impact noise
Pentrough
