Table S1.

Time course of the Lombard effect in the 500-ms continuous noise conditions

Relative time of noise presentation (ms)	30 dB SPL		40 dB SPL		50 dB SPL
	Mean vocal-level adjustment (dB)	Median vocal-level adjustment (dB)	Mean vocal-level adjustment (dB)	Median vocal-level adjustment (dB)	Mean vocal-level adjustment (dB)	Median vocal-level adjustment (dB)
−275	−0.06	0.06	0.69	0.90	0.23	−0.02
−225	−0.41	0.00	0.12	−0.20	0.76	0.37
−175	0.07	0.14	0.15	0.15	0.20	−0.01
−125	−0.94	−0.69	−0.34	0.40	−1.14	−0.32
−75	−0.05	0.05	0.34	0.43	0.57	0.42
−25	−0.26	−0.07	0.10	−0.03	−0.04	−0.06
25	−0.53	−0.66	−0.35	−0.74	−0.35	−0.68
75	−0.40	−0.77	0.85	1.21	2.21	2.28
125	0.24	0.57	2.50	3.15	4.55	5.16
175	2.33	2.14	4.90	4.98	7.10	8.89
225	0.45	−0.44	3.93	3.76	6.75	7.12
275	2.31	1.55	5.55	5.45	8.86	9.96
325	2.43	2.08	5.75	6.09	8.56	9.38
375	2.27	1.93	6.10	5.83	9.75	10.63
425	2.06	1.21	5.87	5.74	9.45	10.45
475	1.85	1.33	6.07	5.62	9.64	10.79
525	2.58	1.98	6.15	5.53	9.97	9.67
575	1.57	0.69	4.68	4.08	7.29	6.99
625	1.46	0.91	3.07	2.95	4.91	4.82
675	0.46	0.27	2.12	2.11	3.28	3.50
725	1.08	−0.13	1.91	1.28	2.91	2.53
775	0.51	−0.13	1.29	0.91	1.84	1.66
825	0.19	−0.76	0.88	0.19	1.19	0.41
875	−0.06	0.01	0.48	0.40	1.08	1.08
925	−0.22	−0.73	0.12	−0.35	1.06	0.27
975	−0.66	−0.82	0.65	0.97	1.22	0.54

Note, there is little difference in the magnitude of the Lombard effect between the means and the medians.