Abstract
The relation between primary acoustic cues and secondary acoustic characteristics of vowels was investigated by asking subjects to identify vowels in different contexts and under different conditions. Six isolated vowels, /a/, /i/, /u/, /æ/. /I/, and /ε/ were presented under nine conditions: naturally spoken, synthesized, synthesized with no differential fundamental frequency information, synthesized with no differential durational information, synthesized with no formant structure, synthesized with no differential fundamental frequency or durational information, synthesized with neither formant structure nor differential fundamental frequency information, synthesized with neither formant structure nor differential durational information, and synthesized with no formant structure and no differential fundamental frequency or durational informational information, synthesized with neither formant structure contexts and presented to subjects for identification. These contexts were chosen to either minimize or maximize the consonant-vowel transitional information. The results will be discussed in terms of the relative importance of primary and secondary acoustic characteristics for vowel identification.
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