Table 15.

Bang machine’s test results in 1/3 Octave bands.

Frequency (Hz)	Case No. (dB)
	Base	R1	R2	R3	R4
50	71.5	72.5	76.6	69.3	76.9
63	72.3	72.1	75.7	69.5	77.3
80	70.4	74.7	70.8	73.0	70.1
100	65.9	64.5	61.4	63.2	59.5
125	59.8	58.9	54.7	57.3	52.6
160	64.0	58.2	53.9	59.9	52.8
200	52.8	56.5	50.2	49.5	43.9
250	51.1	50.7	49.1	44.2	43.4
315	45.7	54.5	45.8	46.2	46.1
400	43.2	54.2	49.2	45.9	46.6
500	44.0	50.2	49.8	45.6	44.9
630	38.7	48.8	50.6	48.2	44.7