. Author manuscript; available in PMC: 2013 Aug 6.

Published in final edited form as: Am J Speech Lang Pathol. 2012 Jan 9;21(2):124–139. doi: 10.1044/1058-0360(2011/11-0009)

Table 5.

Acoustic Characteristics of /t/-/k/ Stimuli, Back-vowel Context

Measure	[t] for /t/		[t] for /k/		t:k		k:t		[k] for /t/		[k] for /k/

	Avg.	SD	Avg.	SD	Avg.	SD	Avg.	SD	Avg.	SD	Avg.	SD

N	5		6		10		8		6		6
Peak ERB^a	25.60	2.41	25.89	1.83	24.50	2.62	24.40	2.07	21.64	5.41	27.33	0.58
Compactness Index^a	0.19	0.03	0.020	0.03	0.020	0.02	0.19	0.02	0.19	0.02	0.20	0.02
Peak Loudness (sones)^a	43.28	9.19	51.24	5.92	48.69	8.57	50.76	14.15	51.96	10.46	49.18	6.74

Note: the distribution of transcription categories in front and back-vowel contexts did not differ significantly, χ²_[df=5,n=88] = 3.652, p = 0.600