消声器消声量计算八倍程中心频率（HZ)入口倍频程噪声 (dB)八倍频程消声量(dB)出口倍频程噪声(dB)综合消声量八倍频程中心频率声压级（dB)HZ631252505001K2K4K56706772737270371522221514536352505157568K6312516329.826.812553.946.9量计算25058.443.4A计权修正dB(A)5001K68.872.046.857.02K73.258.24K71.057.08K61.949.9A计权噪声dB(A)77.762.715.0