Vowel Duration in Three American English Dialects

Area of Science:

• Phonetics
• Sociolinguistics
• Acoustic Analysis

Background:

• Understanding regional variations in American English pronunciation is crucial for dialectology.
• Previous acoustic studies have not fully captured the nuances of vowel duration across distinct dialect areas.
• Specific vowel sounds like those in 'hid,' 'head,' 'had,' 'hayed,' and 'hide' are key indicators of phonetic differences.

Purpose of the Study:

• To acoustically investigate and compare the duration of five American English vowels across three major dialect regions.
• To identify systematic differences in vowel duration between the Inland North, Midlands, and South dialect areas.
• To provide detailed phonetic evidence from cohesive regional samples.

Main Methods:

• Acoustic analysis of recorded speech samples.
• Focus on the duration of five specific American English monophthongs.
• Comparison of vowel durations across participants from the Inland North, Midlands, and South dialect regions.

Main Results:

• Significant and systematic differences in vowel duration were observed across the three dialect areas.
• Vowels in the Southern dialect region exhibited the longest durations.
• Vowels in the Inland North dialect region showed the shortest durations, with the Midlands presenting intermediate, distinct values.

Conclusions:

• Regional dialect significantly impacts American English vowel duration.
• The South, Midlands, and Inland North demonstrate distinct acoustic profiles for vowel length.
• This study contributes detailed regional phonetic data, complementing existing sociolinguistic research.