Average Duration Measurements

Table: Jamaican Creole (Juba): Vowel durations (ms)

	mean	std. dev.	std. err.	n
/i/	54	28	1	496
/u/	58	31	3	139
/e/	83	42	3	249
/o/	91	48	3	297
/a/	87	41	2	694
//	147	56	9	37
/ii/	116	48	5	91
/uu/	133	45	6	52
/ie/	135	63	8	69
/uo/	122	47	4	144
/ou/	156	73	7	102
/aa/	190	70	6	119
/ai/	146	52	4	191
Short Vowels	76	41	1	1875
Long Vowels	144	62	2	768
Stressed	136	64	2	914
Unstressed	76	41	1	1766
/__C[+voice]	103	56	2	1087
/__C[-voice]	95	56	2	632
/C[+voice]__	99	57	2	1198
/C[-voice]__	98	62	3	554

Table: Jamaican Creole (Roasta): Vowel durations (ms)

	mean	std. dev.	std. err.	n
/i/	54	24	1	433
/u/	57	19	2	107
/e/	63	21	1	199
/o/	63	22	2	108
/a/	81	25	1	341
/l/	60	36	11	10
//	147	40	13	9
/ii/	96	34	5	41
/uu/	108	36	9	16
/ir/	118	28	11	6
/ur/	105	NA	NA	1
/ie/	96	29	4	46
/uo/	102	47	7	52
/ou/	139	55	9	37
/aa/	150	39	4	101
/ar/	142	45	5	69
/ai/	134	43	4	97
Short Vowels	64	25	1	1188
Long Vowels	125	46	2	390
Stressed	120	50	2	460
Unstressed	68	30	1	1213
/__C[+voice]	90	41	2	559
/__C[-voice]	87	48	3	320
/C[+voice]__	83	41	2	449
/C[-voice]__	78	44	3	260

Table: Chicago White English (Rita): Vowel durations (ms)

	mean	std. dev.	std. err.	n
//	66	44	5	88
//	69	34	4	75
//	93	38	14	7
//	105	55	8	48
//	102	52	6	75
/æ/	107	54	7	53
//	144	60	11	30
/l/	41	NA	NA	1
//	112	39	7	35
/iy/	79	35	4	77
/uw/	73	41	8	24
/ey/	103	30	5	39
/ow/	136	57	10	31
/oy/	180	78	55	2
/ay/	116	37	4	77
/aw/	135	41	17	6
//	176	82	19	18
Short Vowels	91	53	3	376
Long Vowels	107	50	3	309
Stressed	127	57	3	315
Unstressed	74	32	2	371
/__C[+voice]	100	55	3	341
/__C[-voice]	99	45	4	147
/C[+voice]__	103	48	3	283
/C[-voice]__	86	47	4	154

Table: Chicago White English (Judy): Vowel durations (ms)

	mean	std. dev.	std. err.	n
//	56	37	2	266
//	73	42	3	208
//	60	25	6	15
//	131	86	9	92
//	134	74	7	102
/æ/	118	75	8	95
//	130	58	9	45
//	113	58	5	113
/iy/	96	55	4	154
/ir/	255	125	40	10
/uw/	119	104	18	33
/ey/	132	83	10	68
/er/	145	63	14	19
/ow/	133	66	6	117
/or/	190	56	17	11
/oy/	173	69	28	6
//	159	47	9	26
/ar/	173	90	21	19
/ay/	122	70	5	177
/aw/	170	81	13	39
Short Vowels	90	66	2	823
Long Vowels	126	73	3	792
Stressed	148	79	3	745
Unstressed	73	40	1	870
/__C[+voice]	111	73	3	641
/__C[-voice]	101	60	3	387
/C[+voice]__	114	74	3	668
/C[-voice]__	103	65	3	401

Table: Chicago White English (Jim): Vowel durations (ms)

	mean	std. dev.	std. err.	n
//	57	20	1	505
//	71	28	2	259
//	76	26	4	45
//	103	46	4	108
//	115	68	6	146
/æ/	114	49	4	150
//	110	40	4	83
//	87	34	3	94
/ir/	131	47	13	12
/iy/	76	28	2	155
/uw/	96	34	6	37
/ey/	98	33	4	82
/er/	113	57	11	26
/ow/	127	53	4	147
/or/	151	68	14	23
/oy/	245	NA	NA	1
//	149	49	7	51
/ar/	134	41	10	18
/ay/	110	41	2	325
/aw/	133	45	6	62
Short Vowels	81	45	1	1296
Long Vowels	109	47	1	1033
Stressed	123	52	2	941
Unstressed	73	32	1	1388
/__C[+voice]	92	51	2	877
/__C[-voice]	94	38	2	557
/C[+voice]__	101	49	2	859
/C[-voice]__	89	44	2	501

Table: Anniston, Alabama English (James H.): Vowel durations (ms)

	mean	std. dev.	std. err.	n
//	69	30	2	171
//	94	45	3	238
//	93	43	11	16
//	139	65	5	156
//	104	40	3	141
/æ/	133	42	4	108
//	129	62	12	28
/l/	85	32	8	16
//	105	60	7	77
/iy/	134	51	7	62
/ir/	156	51	14	13
/uw/	120	52	6	75
/ey/	130	50	5	105
/er/	168	62	10	40
/ow/	168	63	6	111
/or/	164	51	14	13
/oy/	333	NA	NA	1
//	165	52	6	73
/r/	171	30	9	11
/ar/	192	48	13	14
/ay/	149	54	5	103
/aw/	189	45	6	65
Short Vowels	105	53	2	858
Long Vowels	148	60	2	763
Stressed	154	58	2	886
Unstressed	91	42	2	751
/__C[+voice]	131	61	2	698
/__C[-voice]	113	45	2	375
/C[+voice]__	132	62	2	652
/C[-voice]__	114	55	3	430

Table: Los Angeles Chicano English (Vince): vowel durations (ms)

	mean	std. dev.	std. err.	n
//	59	33	2	318
//	71	37	3	192
//	67	34	7	22
//	92	42	4	109
//	114	67	6	123
/æ/	91	35	3	173
/l/	58	21	6	12
//	79	40	4	106
/iy/	74	40	3	210
/ir/	119	47	12	15
/uw/	100	56	8	46
/ey/	113	50	6	79
/er/	101	37	7	28
/ow/	129	56	5	111
/or/	140	80	20	16
/oy/	210	89	40	5
/a/	118	46	6	70
/ar/	129	37	11	12
/ay/	104	50	4	183
/aw/	153	78	17	22
Short Vowels	79	45	1	937
Long Vowels	102	54	2	903
Stressed	115	56	2	698
Unstressed	75	40	1	1192
/__C[+voice]	91	51	2	746
/__C[-voice]	87	37	2	400
/C[+voice]__	92	50	2	829
/C[-voice]__	88	55	3	442