飞机噪声测量用频率计权(D--计权) GBT 6446-1986.pdf

GB6446-86表2频率响应和容差须相对响应容差(Hz)(dB)(dB)10-26.6+3.0,-012.5-24.6+3.0,-016-22.6+3.0,-con-20.63.025-18.72.031.5-16.71.540-14.71.550-12.81.563-10.91.50-9.01.5100-7.2十1.0125-5.5+1.0160-4.01.0200-2.61.0250-1.61.0315-0.81.04000.41.0500-0.31.0630-0.51.02