声学技术
聲學技術
성학기술
Technical Acousitics
2014年
z1期
182-185
,共4页
陈鸿洋%周进华%田波%郦茜
陳鴻洋%週進華%田波%酈茜
진홍양%주진화%전파%역천
测试%冲击噪声%水槽
測試%遲擊譟聲%水槽
측시%충격조성%수조
Testing%Impact noise%Pentrough
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。
針對水槽中設備的水下遲擊譟聲測試問題,指齣瞭一種近似的測量方法。該方法在遠離設備的位置佈放水聽器,擬閤水槽中的聲衰減規律,併據此進行聲源級歸算。結果錶明:該方法可在水槽這種特殊環境下,實現設備水下譟聲的摸底測試。測量時應避開設備附近榦涉較彊的區域,若採用標準聲源及10元以上的水聽器陣預先測量水槽中的衰減麯線則可以提高歸算的精度。
침대수조중설비적수하충격조성측시문제,지출료일충근사적측량방법。해방법재원리설비적위치포방수은기,의합수조중적성쇠감규률,병거차진행성원급귀산。결과표명:해방법가재수조저충특수배경하,실현설비수하조성적모저측시。측량시응피개설비부근간섭교강적구역,약채용표준성원급10원이상적수은기진예선측량수조중적쇠감곡선칙가이제고귀산적정도。
An approximated method is proposed for the measurement of impact noise form equipment along the pen-trough. 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 equip-ment 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.