TABLE II.

Final stimulus levels used for hearing-impaired (HI) listeners. For each HI listener and each test frequency, the left-ear (“L”) and right-ear (“R”) hearing losses and the stimulus level used for each test are provided in this table, along with the high frequency used for each listener. In the high-frequency ILD task, lower-than-initially planned levels were used for HI3, HI5, and HI6, to avoid exceeding the subjects' discomfort thresholds. The same was true for all high-frequency tasks for HI4. Lower than initially planned levels were used for HI9 and HI10 in ILD at 2 kHz, to avoid exceeding the equipment ceiling.

	500-Hz HL		500-Hz stimulus level			High-frequency HL		High-frequency stimulus level			High-freq. test freq.
	L	R	ITD	ILD	ICC	L	R	ITD	ILD	ICC
HI1	25	20	75	75	75	55	50	85	85	85	4 kHz
HI2	30	35	75	75	75	45	40	85	85	85	4 kHz
HI3	35	25	75	75	75	50	45	85	75	85	4 kHz
HI4	15	15	75	75	75	65	65	85	85	85	4 kHz
HI5	35	35	85	80	80	55	60	90	88	90	4 kHz
HI6	50	55	80	80	80	60	60	85	80	85	4 kHz
HI7	40	35	80	80	80	80	75	DNM	DNM	DNM	4 kHz
HI8	55	55	85	85	85	70	70	98	DNM	98	4 kHz
HI9	75	65	90	90	90	75	75	100	95	100	2 kHz
HI10	65	65	95	95	95	85	75	100	95	100	2 kHz
HI11	55	55	85	85	85	95	95	DNM	DNM	DNM	2 kHz