AI Service > Speech to Text > API Guide

Speech Recognition API

Request

  • You can check the {appKey} and {secretKey} in the URL & Appkey menu at the top of the console.

[URI]

Method URI
POST https://speech.api.nhncloudservice.com/v1.0/appkeys/{appKey}/stt

[Request Header]

Name Value Description
Authorization {secretKey} Security key issued from the console

[Request Body]

  • Input the binary data of the voice file.
curl -X POST 'https://speech.api.nhncloudservice.com/v1.0/appkeys/{appKey}/stt' \
-F 'audio=@sample.mp3' \
-H 'Authorization: ${secretKey}'

[Field]

Name Type Description
audio multipart/form–data Voice file (WAV, WebM, MP3, OGG, FLAC, AAC, AC3)

Response

[Response Body]

{
    "header": {
        "isSuccessful": true,
        "resultCode": 0,
        "resultMessage": "SUCCESS"
    },
    "result": {
        "inputLength": 1.85,
        "fileType": "mp3",
        "text": "Hello.",
        "confidence": 0.94
    }
}

[Header]

Name Type Description
isSuccessful Boolean Analysis API successful or not
resultCode Integer Result code
resultMessage String Result message (SUCCESS on success, error details on failure)

[Field]

Name Type Description
inputLength Double Recognized voice file duration (unit: seconds)
fileType String Recognized voice file type
text String Text conversion result of recognized speech
confidence Double Recognition result confidence
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