Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Vowel space dispersion measured as the distance of each vowel from the central point in the talker’s F1×F2 space for the talker who exhibited the largest effects of vowel space expansion in each language. Solid lines connect the clear speech vowels (circles) and dashed lines connect the conversational speech vowels (triangles).
