/ə/
Click on the vowel space to select an F1/F2 combination. The corresponding IPA vowel symbol will be shown, along with synthesis parameters.
F1 ↔ tongue height (low jaw/tongue = high F1)
F2 ↔ tongue advancement (front vowels have high F2)
Formant frequencies (Hz) for cardinal vowels:
/i/ (beat): F1=270, F2=2290
/ɪ/ (bit): F1=390, F2=1990
/ɛ/ (bet): F1=530, F2=1840
/æ/ (bat): F1=660, F2=1720
/ɑ/ (bott): F1=730, F2=1090
/ɔ/ (bought): F1=570, F2=840
/ʊ/ (book): F1=440, F2=1020
/u/ (boot): F1=300, F2=870
/ʌ/ (butt): F1=640, F2=1190
/ə/ (sofa): F1=500, F2=1500