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Education & Technologies

Speech-to-Text Autograding

Project Info

        We developed a custom integration that connects Google Speech-to-Text with Moodle essay-type questions. The client is a Japanese language instructor who wanted students to submit spoken answers instead of typed text. The system converts the audio into text, compares the result with the correct answer, and automatically grades the question based on the similarity score.

 

Key Features

  • Students record their response directly inside an essay-type question.

  • Google Speech-to-Text API converts audio to text.

  • The system calculates the distance between the correct answer and the student’s response to generate an automatic grade.

  • Teachers can choose the output format:

    • Kanji–Kana

    • Romaji

  • Quiz attempt reports now include:

    • Transcribed text

    • Confidence score from Google API

  • Teachers can download student audio submissions individually or as a bulk download.

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