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Overview

This document aims to introduce how to use our Text-to-Speech API, including making requests via GET and POST methods. This API supports converting text into the voice of specified characters and supports different languages and emotional expressions.

Character and Emotion List

To obtain the supported characters and their corresponding emotions, please visit the following URL:

  • URL: http://127.0.0.1:5000/character_list
  • Returns: A JSON format list of characters and corresponding emotions
  • Method: GET
{
    "Hanabi": [
        "default",
        "Normal",
        "Yandere",
    ],
    "Hutao": [
        "default"
    ]
}

Regarding Aliases

From version 2.2.4, an alias system was added. Detailed allowed aliases can be found in Inference/params_config.json.

Text-to-Speech

  • URL: http://127.0.0.1:5000/tts
  • Returns: Audio on success. Error message on failure.
  • Method: GET/POST

GET Method

Format

http://127.0.0.1:5000/tts?character={{characterName}}&text={{text}}
  • Parameter explanation:
    • character: The name of the character folder, pay attention to case sensitivity, full/half width, and language (Chinese/English).
    • text: The text to be converted, URL encoding is recommended.
    • Optional parameters include text_language, format, top_k, top_p, batch_size, speed, temperature, emotion, save_temp, and stream, detailed explanations are provided in the POST section below.
  • From version 2.2.4, an alias system was added, with detailed allowed aliases found in Inference/params_config.json.

POST Method

JSON Package Format

All Parameters
{
    "method": "POST",
    "body": {
        "character": "${chaName}",
        "emotion": "${Emotion}",
        "text": "${speakText}",
        "text_language": "${textLanguage}",
        "batch_size": ${batch_size},
        "speed": ${speed},
        "top_k": ${topK},
        "top_p": ${topP},
        "temperature": ${temperature},
        "stream": "${stream}",
        "format": "${Format}",
        "save_temp": "${saveTemp}"
    }
}

You can omit one or more items. From version 2.2.4, an alias system was introduced, detailed allowed aliases can be found in Inference/params_config.json.

Minimal Data:
{
    "method": "POST",
    "body": {
        "text": "${speakText}"
    }
}
Parameter Explanation

  • text: The text to be converted, URL encoding is recommended.

  • character: Character folder name, pay attention to case sensitivity, full/half width, and language.

  • emotion: Character emotion, must be an actually supported emotion of the character, otherwise, the default emotion will be used.

  • text_language: Text language (auto / zh / en / ja), default is multilingual mixed.

  • top_k, top_p, temperature: GPT model parameters, no need to modify if unfamiliar.

  • batch_size: How many batches at a time, can be increased for faster processing if you have a powerful computer, integer, default is 1.

  • speed: Speech speed, default is 1.0.

  • save_temp: Whether to save temporary files, when true, the backend will save the generated audio, and subsequent identical requests will directly return that data, default is false.

  • stream: Whether to stream, when true, audio will be returned sentence by sentence, default is false.

  • format: Format, default is WAV, allows MP3/ WAV/ OGG.