Table 2.

For each audiometric threshold category, average slopes and average intercepts of the lines fit to the soft portion of each subject’s CLS function are provided. Given audiometric threshold (dB HL) and input level (dB SPL), these values can be used to predict an individual’s loudness rating when equal to or less than “Medium” (CU=20). Average soft slopes and average intercepts are shown separately for each frequency.

Audiometric Threshold (dB HL)	Average Slope (CU/dB)			Average Intercept (CU)
	1 kHz	2 kHz	4 kHz	1 kHz	2 kHz	4 kHz
−5	0.23	0.20	0.23	−1.5	−0.5	−1.6
0	0.30	0.27	0.24	−4.4	−3.6	−0.1
5	0.25	0.25	0.28	−0.8	−1.9	−2.7
10	0.27	0.27	0.25	−3.0	−4.7	−4.0
15	0.28	0.30	0.32	−3.9	−8.5	−8.3
20	0.31	0.32	0.31	−7.8	−10.4	−9.2
25	0.34	0.33	0.32	−9.4	−11.9	−9.9
30	0.38	0.38	0.40	−13.1	−13.7	−17.3
35	0.43	0.48	0.52	−15.4	−22.5	−22.7
40	0.53	0.48	0.50	−26.2	−26.5	−25.2
45	0.50	0.55	0.45	−26.2	−32.1	−24.2
50	0.58	0.58	0.62	−33.8	−37.3	−38.4
55	0.42	0.66	0.67	−24.1	−49.0	−43.0
60	--	0.56	0.54	--	−36.2	−37.3
65	--	--	0.62	--	--	−46.3
75	--	--	1.04	--	--	−89.1