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Speech Recognition Lab

Web Speech API vs Whisper (Cloudflare Workers AI)

Ready

Transcript

Raw Results (newest first)

Ready — tap Record, speak, tap Stop

History (newest first)

発音チェック — on-device pronunciation checker

Read a sentence aloud and get scores for each sound, word and the whole sentence, with the sound it resembled (e.g. /l/ heard as /r/), extra katakana-style vowels, and mouth-position tips. Everything runs in the browser: no audio or text leaves the device, and no external API is called.

  • First start downloads about 110 MB (cached in the browser afterwards).
  • Practice sets for L/R, TH, V/F, word-final consonants, clusters and more, or any typed sentence.
  • Teacher accounts only.
Open 発音チェック →