In most acoustic phonetic studies, researchers go to great lengths to specify that the participants do not have any speech impediments. These specifications are meant to show that the speech patterns of the talkers qualify as mainstream pronunciation. This is not the case in this study. Author 2 has a noticeable speech impediment. She enrolled in Author 1’s acoustic phonetic course. In this course, students study their own speech patterns in the minutest of details and compare their speech with that of a group of native or nonnative speakers. We do the same with Author 2’s vowels to see how they resemble or differ from those produced in Central Minnesota, her dialect area.
Koffi, Ettien and Gerlach, Paige
"ACOUSTIC PHONETIC CHARACTERISTICS OF DISORDERED VOWELS,"
Linguistic Portfolios: Vol. 12, Article 7.
Available at: https://repository.stcloudstate.edu/stcloud_ling/vol12/iss1/7