// vowel space · F1 × F2
FEMALE
// input
// voice type
AUTO
Sets expected formant ranges. Belt + soprano can push F0 past 500 Hz — auto-detect uses your voiced range over time.
// resonance strategy
F₁ vs HARMONICS
—
// F₃ deviation
VOWEL-REF
Nearest vowel: —
DARK / ↓LXBRIGHT / ↑F3
—
// calibrate
Hold a vowel, click its letter to set that as your reference position.
// LPC spectrum (0–5 kHz)
ORDER 18