MENU
      STT (Speech-to-Text)

        STT (Speech-to-Text)


        Article summary

        Available in Classic and VPC

        Accept speech data in MP3, AAC, AC3, OGG, FLAC, and WAV formats, as well as the language to be used for speech recognition, and convert the recognition results to text.

        Request

        The following describes the request format for the endpoint. The request format is as follows:

        MethodURI
        POST/stt

        Request headers

        For headers common to all CLOVA Speech Recognition (CSR) APIs, see Common CLOVA Speech Recognition (CSR) headers.

        Request query parameters

        The following describes the request query parameters.

        FieldTypeRequiredDescription
        langStringRequiredLanguage of the converted text
        • Kor | Eng | Jpn | Chn
          • Kor: Korean
          • Eng: English
          • Jpn: Japanese
          • Chn: Chinese (Simplified)

        Request body

        The following describes the request body.

        FieldTypeRequiredDescription
        Voice data to convertBinaryRequiredBinary voice data in MP3, AAC, AC3, OGG, FLAC, or WAV format
        • Playback time up to 60 seconds

        Request example

        The following is a sample request.

        curl --location --request POST 'https://naveropenapi.apigw.ntruss.com/recog/v1/stt
        ?lang=Kor' \
        --header 'X-NCP-APIGW-API-KEY-ID: {Client ID issued when registering the app}' \
        --header 'X-NCP-APIGW-API-KEY: {Client secret issued when registering the app}' \
        --header 'Content-Type: application/octet-stream' \
        --data '@{file}'
        Shell

        Response

        The following describes the response format.

        Response body

        The following describes the response body.

        FieldTypeRequiredDescription
        textString-Converted text from voice file

        Response status codes

        For response status codes common to all CLOVA Speech Recognition (CSR) APIs, see Common CLOVA Speech Recognition (CSR) response status codes.

        Response example

        The following is a sample example.

        {
            "text": "Hello,"
        }
        JSON

        Was this article helpful?

        Changing your password will log you out immediately. Use the new password to log back in.
        First name must have atleast 2 characters. Numbers and special characters are not allowed.
        Last name must have atleast 1 characters. Numbers and special characters are not allowed.
        Enter a valid email
        Enter a valid password
        Your profile has been successfully updated.