Table 1.

Summary of the individual data (gender, age); clinic measurements (thresholds at 0.25, 0.5, 1, 2, and 4 kHz in dB Hearing Level (HL) for both ears and presumed etiology); frequency in kHz selected for the experiment and threshold in dB SPL measured in the laboratory; individual results (exponent α and binaural-to-monaural ratio). Abbreviations for etiology are congenital or hereditary hearing loss (CHHL), presbycusis (Pres.), noise induced hearing loss (NIHL), and family history of hearing loss (FHHL).

Listeners			Clinic threshold (dB HL)								Laboratory measurement		Expt. result
	Gender	Age	Ear	0.25k	0.5k	1k	2k	4k	8k	Et.	Test frequency (kHz)	Threshold (dB SPL)	a	Ratio
HI-1	M	65	L	55	60	65	65	75	70	CHHL	1.05k	70	0.314	1.297
			R	50	60	60	60	60	75			72
HI-2	M	65	L	10	5	40	45	70	70	Pres.	1k	65	0.201	1.15
			R	10	15	40	45	75	85			64
HI-3	M	76	L	20	30	40	45	75	85	Pres.	2k	65	0.279	1.342
			R	15	40	40	45	75	nr			67
HI-4	M	60	L	55	60	65	65	70	90	NIHL	1k	65	0.236	1.163
			R	55	65	65	70	75	90			68
HI-5	F	60	L	20	15	45	35	50	55	Pres.	0.95k	45	0.25	1.533
			R	15	15	40	60	45	60			47
HI-6	M	61	L	5	10	30	55	95	95	NIHL	0.95k	33	0.158	1.337
			R	10	10	25	40	85	95			34
HI-7	M	74	L	25	30	45	50	65	50	Pres. FHHL	1k	53	0.19	1.141
			R	25	30	40	45	50	50			55
HI-8	F	73	L	45	40	45	45	75	75	Pres.	1k	55	0.22	1.355
			R	40	35	40	50	80	80