Vowel Map

Sing or speak into the microphone and watch your voice move through the vowel chart. The point follows the first two formants, estimated live by linear prediction.

• Live F1/F2 tracking with a fading trail, over reference vowels for German or English.
• Calibration on your own corner vowels. It makes two singers comparable despite different vocal tract lengths.
• Vowel snapshots with spread, a pinned target vowel and a live distance readout, for vowel blending in a choir.
• A reliability readout based on your fundamental frequency. High voices sample the spectral envelope too coarsely for a precise estimate.