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.
Means and Standard Deviations (SDs) of Formant Frequencies for Vowels /a/, /i/, /o/, and /u/
| /a/ |
/i/ |
/o/ |
/u/ |
|||||
| Mean, Hz |
SD |
Mean, Hz |
SD |
Mean, Hz |
SD |
Mean, Hz |
SD |
|
| F1 | 830.8286 | 122.7114 | 481.0571 | 91.60046 | 572.7429 | 98.67276 | 472.2941 | 122.1962 |
| F2 | 1488.771 | 124.1723 | 2688.543 | 408.6057 | 1193.229 | 242.5064 | 1069 | 307.7506 |
| F3 | 3134.343 | 297.3406 | 3451.371 | 334.7757 | 3079.086 | 314.4737 | 3126.879 | 399.2855 |
| F4 | 4031.029 | 238.7724 | 4141.323 | 198.0812 | 3970.8 | 228.3087 | 4036.645 | 201.1148 |
