Table 2.

Worksheet for Calculating Adult-Equivalent Hearing Loss

	Frequency (Hz)
	250	500	1000	2000	3000	4000	6000
Insert earphone + own mold (dB HL): Eq. 1
HLdial	60	60	60	60	60	60	60
+ RECDindiv	5	10	14	15	13	13	13
− RECDa.avg.	4	4	5	8	9	7	10
= HLa.e.	61	66	69	67	64	66	63
Insert earphone + own mold (dB SPL): Eq. 2
SPLcanal	60	60	60	60	60	60	60
− REDDa.avg.	18	10	5	11	13	12	12
= HLa.e.	42	50	55	49	47	48	48
Loudspeaker in sound field (dB HL): Eq. 3
HLdial	60	60	60	60	60	60	60
+ REUGindiv	1	1	2	5	5	6	14
− REUGa.avg.	0	0	1	12	17	15	7
= HLa.e.	61	61	61	53	48	51	67
Loudspeaker in sound field (dB SPL): Eq. 4
SPLfield	60	60	60	60	60	60	60
− MAF	13	8	6	3	−2	−2	10
+ REUGindiv	1	1	2	5	5	6	14
− REUGa.avg.	0	0	1	12	17	15	7
= HLa.e.	48	53	55	50	50	53	57

The adult-equivalent hearing loss (HL_a.e) is shown with the measured values in italics, and the calculated HL_a.e values in bold.