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Klatt Grid Vowel Synthesis

Frontend

The app is a TypeScript React app using Redux.

Build

npm run build

Run

npm run start

Backend

The backend repo can be found here. It is built with Python and Flask.

Usage

Of the various parameters one can pass to the KlattGrid Speech Synthesizer, this app exposes the three most important ones: F1, F2 and F3 (the first three formants of a vowel).

Use the sliders or the input fields to change the formant values.

The dot in the vowel space will move according to the F1 and F2 values you enter; this vowel space is only a lossy 2D representation of the vowel, and does not fully capture the vowel’s quality.

Reference

Weenink, D. (2009) The klattgrid speech synthesizer. Proc. Interspeech 2009, 2059‒2062, doi: 10.21437/Interspeech.2009-591.