RecognizeAudio

最后更新时间：2026-02-02 11:48:31

RecognizeAudio

最后更新时间： 2026-02-02 11:48:31

1. API Description

Domain name for API request: mps.intl.tencentcloudapi.com.

This API is used to return the speech recognition results synchronously.

A maximum of 5 requests can be initiated per second for this API.

We recommend you to use API Explorer

Try it

API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name	Required	Type	Description
Action	Yes	String	Common Params. The value used for this API: RecognizeAudio.
Version	Yes	String	Common Params. The value used for this API: 2019-06-12.
Region	No	String	Common Params. This parameter is not required for this API.
AudioData	Yes	String	Base64-encoded audio data.
Source	No	String	Target language for recognition. If this is not specified, the language is automatically identified (auto).Note: If the automatic identification provides unsatisfactory results, you can specify the language to improve the accuracy.Supported languages:auto: automatic identification.zh: Simplified Chinese.en: English.ja: Japanese.ko: Korean.vi: Vietnamese.ms: Malay.id: Indonesian.fil: Filipino.th: Thai.pt: Portuguese.tr: Turkish.ar: Arabic.es: Spanish.hi: Hindi.fr: French.de: German.it: Italian.yue: Cantonese.ru: Russian.af: Afrikaans.sq: Albanian.am: Amharic.hy: Armenian.az: Azerbaijani.eu: Basque.bn: Bengali.bs: Bosnian.bg: Bulgarian.my: Burmese.ca: Catalan.hr: Croatian.cs: Czech.da: Danish.nl: Dutch.et: Estonian.fi: Finnish.gl: Galician.ka: Georgian.el: Greek.gu: Gujarati.iw: Hebrew.hu: Hungarian.is: Icelandic.jv: Javanese.kn: Kannada.kk: Kazakh.km: Khmer.rw: Kinyarwanda.lo: Lao.lv: Latvian.lt: Lithuanian.mk: Macedonian.ml: Malayalam.mr: Marathi.mn: Mongolian.ne: Nepali.no: Norwegian Bokmal.fa: Persian.pl: Polish.ro: Romanian.sr: Serbian.si: Sinhala.sk: Slovak.sl: Slovenian.st: Southern Sotho.su: Sundanese.sw: Swahili.sv: Swedish.ta: Tamil.te: Telugu.ts: Tsonga.uk: Ukrainian.ur: Urdu.uz: Uzbek.ve: Vendaxh: Xhosa.zu: Zulu.
AudioFormat	No	String	Audio data format. Default value: pcm.Supported formats:pcm (mono 16-bit PCM data with a sample rate of 16000).ogg-opus (mono Opus-encoded Ogg data with sample rates of 16000, 24000, or 48000).
SampleRate	No	Integer	Audio sample rate.Supported sample rates:pcm 16000 ogg-opus 16000 / 24000 / 48000
UserExtPara	No	String	Extended parameter. This is left empty by default. Use this parameter for special requirements.

3. Output Parameters

Parameter Name	Type	Description
Text	String	Recognition result of the entire audio.
AudioLength	Float	Audio duration, in seconds.
Sentence	Array of RecognizeAudioSentence	Recognition results of individual sentences.
RequestId	String	The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 RecognizeAudio

Input Example

POST / HTTP/1.1
Host: mps.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: RecognizeAudio
<Common request parameters>

{
    "Source": "zh",
    "AudioFormat": "pcm",
    "AudioData": "KwDn/zIA5v///wUA0v8D"
}

Output Example

{
    "RequestId": "f27f3866-3882-4c18-a4ac-3b3d83fd2f5a",
    "Response": {
        "AudioLength": 4.2,
        "RequestId": "f27f3866-3882-4c18-a4ac-3b3d83fd2f5a",
        "Sentence": [
            {
                "End": 3.59,
                "Start": 0.03,
                "Text": "The third and fourth meetings were held at the Great Hall of the People.",
                "WordsInfo": [
                    {
                        "End": 0.27,
                        "Start": 0.03,
                        "Word": "The"
                    },
                    {
                        "End": 0.43,
                        "Start": 0.27,
                        "Word": "third"
                    },
                    {
                        "End": 0.51,
                        "Start": 0.43,
                        "Word": "and"
                    },
                    {
                        "End": 0.71,
                        "Start": 0.51,
                        "Word": "fourth"
                    },
                    {
                        "End": 0.91,
                        "Start": 0.71,
                        "Word": "meetings"
                    },
                    {
                        "End": 1.07,
                        "Start": 0.91,
                        "Word": "were"
                    },
                    {
                        "End": 1.55,
                        "Start": 1.39,
                        "Word": "held"
                    },
                    {
                        "End": 1.71,
                        "Start": 1.55,
                        "Word": "at"
                    },
                    {
                        "End": 1.95,
                        "Start": 1.75,
                        "Word": "the"
                    },
                    {
                        "End": 2.15,
                        "Start": 1.95,
                        "Word": "Great"
                    },
                    {
                        "End": 2.39,
                        "Start": 2.15,
                        "Word": "Hall"
                    },
                    {
                        "End": 2.75,
                        "Start": 2.47,
                        "Word": "of"
                    },
                    {
                        "End": 2.91,
                        "Start": 2.75,
                        "Word": "the"
                    },
                    {
                        "End": 3.11,
                        "Start": 2.91,
                        "Word": "People."
                    }
                ]
            }
        ],
        "Text": "The third and fourth meetings were held at the Great Hall of the People."
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code	Description
InternalError.RecognitionError	Recognition error.
InvalidParameterValue.AudioData	Invalid audio data.
InvalidParameterValue.AudioDataTooLong	The audio data is too long.
InvalidParameterValue.AudioFormat	Unsupported audio data format.
InvalidParameterValue.SampleRate	Invalid audio sample rate.
InvalidParameterValue.SourceLanguage	SourceLanguage parameter error.
ResourceNotFound.UserUnregister	The user is not registered.

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