Research on Experimental Method for Obtaining Independent Combustion Noise of Internal Combustion Engine

Table 2

Frequency characteristic parameter of weighted network.

Center frequency (Hz)	weighted value (dB)	Center frequency (Hz)	weighted value (dB)
100	−19.1	1000	0
125	−16.1	1250	0.6
160	−13.4	1600	1.0
200	−10.9	2000	1.2
250	−8.6	2500	1.3
315	−6.6	3150	1.2
400	−4.8	4000	1.0
500	−3.2	5000	0.5
630	−1.9	6300	−0.1
800	−0.8	8000	−1.1