Table 16.

Bang machine’s test results in 1/1 Octave bands.

Frequency (Hz)	Case No. (Difference, dB)
	Base	R1	R2	R3	R4
63	76.2	78.0(+1.8)	79.8(+3.6)	75.7(−0.5)	80.5(+4.3)
125	68.7	66.3(−2.4)	62.8(−5.9)	65.6(−3.1)	61.0(−7.7)
250	55.5	59.3(+3.8)	53.5(−2.0)	52.0(−3.5)	49.4(−6.1)
500	47.3	56.5(+9.2)	54.7(+7.4)	51.5(+4.2)	50.3(+3.0)
SNQ ($L_{i,Fmax,AW})$	51	53	52	50	50