Observed arrival · 2026-09-02
Polyglot Polly puts language practice in your own vocal register
A browser-based language-learning tool that resamples reference speech to match your pitch across 41 languages, then scores your spoken attempt.
Field notes
The workflow begins with a one-sentence voice sample, from which the site estimates median fundamental frequency using autocorrelation. Reference speech is then resampled into that register rather than replaced with a different tone contour, with the stated goal of preserving the interval relationships that carry meaning in Mandarin and Cantonese. The listed coverage includes 41 language or regional variants, while translations, romanization, glosses, and tone numbers are described as model-generated at request time.
Observed signals
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