INTELLIGIBILITY AND CONFUSABILITY OF VOWELS AND DIPHTHONGS UNDER VARIOUS CONDITIONS OF QUIET AND NOISE
OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS
Pagination or Media Count:
Sixteen English vowels and diphthongs were recorded by 4 male and 4 female speakers. For each vowel and diphthong, 120 responses were obtained from a panel of 6 phonetically trained listener at several levels of noise and quiet each of 5 levels of noise were matched for listening difficulty with 5 levels of quiet. The levels of difficulty ranged from approximately 25 to 85 correct. The results on vowel-diphthong intelligibility support the conclusions that vowels and diphthongs 1 are significantly different in intelligibility, 2 have a fairly stable order of intelligibility, similar in noise and quiet and among the 8 speakers, though more stable among speakers of the same sex, 3 improve in intelligibility at different rates as listening conditions are improved, and 4 are more intelligible from male speakers. In regard to vowel and diphthong confusability, results support the conclusions that 1 a great many significant confusions exist among the vowels and diphthongs under fairly difficult listening conditions, 2 0 at least one significant confusion exists for each vowel and diphthong, 3 each vowel and diphthong is a significant confusion for at least one other vowel or diphthong, and 4 confusions bear a reciprocal relationship to one another.
- Anatomy and Physiology