Help Center/ Speech Interaction Service/ API Reference/ Short Sentence Recognition/ HTTP Interface

Updated on 2025-08-26 GMT+08:00

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HTTP Interface

Function

This API is used for real-time recognition of short sentences. Audio files within 1 minute can be uploaded at a time without segmentation, and the recognition result can be returned immediately.

URI

POST /v1/{project_id}/asr/short-audio

**Table 1** Path parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Project ID. For details about how to obtain the project ID, see Obtaining a Project ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	User token. It is used to obtain the permission to call APIs. For details about how to obtain a user token, see Authentication. The token is the value of X-Subject-Token in the response header.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
config	Yes	Config object	Configuration information.
data	Yes	String	Base64-encoded voice data. The size of the Base64-encoded voice data cannot exceed 4 MB, and the audio duration cannot exceed 1 minute. For example, /+MgxAAUeHpMAUkQAANhuRAC..... If the prefix data:audio/mp3;base64, is carried, an error is reported.

**Table 4** Config
Parameter	Mandatory	Type	Description
audio_format	Yes	String	Supported audio format. For details, see Table 5.
property	Yes	String	Model feature string in use, which is generally in the Language_Sampling rate_Domain format. The sampling rate must be the same as the audio sampling rate. For details about the value range, see Table 6.
add_punc	No	String	Whether to add punctuation marks to the recognition result. The value can be yes or no. The default value is no.
digit_norm	No	String	Whether to convert digits in the speech into Arabic numerals. The value can be yes or no. The default value is yes.
vocabulary_id	No	String	Hot word table ID. If no hot word table is used, this field can be left blank. This parameter is currently not supported on the international website.
need_word_info	No	String	Whether to output the word segmentation result in the recognition result. The value can be yes or no. The default value is no.

**Table 5** Value range of **audio_format**
Value	Description
pcm16k16bit	16 kHz, 16-bit mono-channel audio recording data
pcm8k16bit	8 kHz, 16-bit mono-channel audio recording data
ulaw16k8bit	16 kHz, 8-bit u-law mono-channel audio recording data
ulaw8k8bit	8 kHz, 8-bit u-law mono-channel audio recording data
alaw16k8bit	16 kHz, 8-bit A-law mono-channel audio recording data
alaw8k8bit	8 kHz, 8-bit A-law mono-channel audio recording data
mp3	MP3 audio recording data Currently, only mono-channel audio is supported.
aac	AAC audio recording data Currently, only mono-channel audio is supported.
wav	Format with the WAV encapsulation header. The format is automatically determined by the encapsulation header. Currently, only the 8 kHz/16 kHz sampling rate, mono channel, and pcm encoding format are supported.
amr	AMR narrowband (8 kHz) compressed audio recording data. Currently, only mono-channel audio is supported.
amrwb	AMR broadband (16 kHz) compressed audio recording data. Currently, only mono-channel audio is supported.
auto	The engine automatically determines and decodes the audio data in amr, flac, m4a, mp3, ogg, webm, wav, aac, ac3, mov, wma, and amrwb format.

**Table 6** Value range of **property**
Value	Description
chinese_16k_general	Supports speech recognition of Chinese Mandarin with a sampling rate of 8 kHz or 16 kHz. The next-gen end-to-end recognition algorithm is used to achieve higher recognition accuracy.
arabic_16k_general	Supports Arabic speech recognition at a sampling rate of 16 kHz and supports Standard Arabic, Egyptian dialect, and Saudi dialect. The add_punc, digit_norm, and vocabulary_id parameters are currently not supported.
english_16k_common	Supports English speech recognition at a sampling rate of 8 kHz or 16 kHz. The digit_norm parameter is currently not supported.
english_8k_common	Supports English speech recognition at a sampling rate of 8 kHz. This model is an old version and will not be maintained later. You are advised to use english_16k_common.

Response Parameters

Status code: 200

**Table 7** Response body parameters
Parameter	Mandatory	Type	Description
trace_id	Yes	String	Internal token used to trace a specific process in logs. This parameter is not included when the API fails to be called. In some error cases, this field may not exist.
result	Yes	Result object	If the calling is successful, this parameter indicates the recognition result. Otherwise, this parameter is invalid.

**Table 8** Result
Parameter	Mandatory	Type	Description
text	Yes	String	Recognition result of a successful call
score	Yes	Float	Confidence of a successful call. The value ranges from 0 to 1.
word_info	No	Array of WordInfo objects	Word segmentation information list Word segmentation refers to splitting the recognized text into individual words.

**Table 9** WordInfo
Parameter	Mandatory	Type	Description
start_time	No	Integer	Start time
end_time	No	Integer	End time
word	No	String	Word segmentation

Status code: 400

**Table 10** Response body parameters
Parameter	Type	Description
error_code	String	Error code when the API call fails. This parameter is not returned for a successful call.
error_msg	String	Error message when the API call fails. This parameter is not returned for a successful call.

Example Requests

The endpoint is the request URL for calling an API. Endpoints vary according to services and regions. For details, see Endpoints.

Upload a short audio and quickly obtain the recognition result.

POST https://{endpoint}/v1/{project_id}/asr/short-audio

Request header:
Content-Type: application/json
X-Auth-Token: MIINRwYJKoZIhvcNAQcCoIINODCCDTQCAQExDTALBglghkgBZQMEAgEwgguVBgkqhkiG...   

Request body: 
{
  "config":
  {
    "audio_format": "wav",
    "property": "arabic_16k_general",
    "add_punc": "yes",
    "need_word_info": "yes"
  },
  "data": "/+MgxAAUeHpMAUkQAANhuRAC..."
}

Example Responses

Status code: 200

Example response for a successful request

{
  "trace_id": "567e8537-a89c-13c3-a882-826321939651",
  "result":{
   "text": "Nice to meet you",
    "score": 0.9,
  }
}

Status code: 400

Example response for a failed request

{ 
    "error_code":"SIS.0001", 
    "error_msg":"***" 
}

Status Codes

See Status Codes.

Error Codes

See Error Codes.

Parent topic: Short Sentence Recognition

Previous topic: Short Sentence Recognition

Next topic: Hot Word Management APIs

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