text-to-speech

Create Custom Hololive Virtual Voices with AI

26 Apr 2025
Create Custom Hololive Virtual Voices with AI

The "Hololive Style Bert Vits2" service offers developers the ability to generate high-quality, customizable voices reminiscent of popular Hololive Virtual YouTubers (VTubers). This powerful text-to-speech technology supports multiple languages, including English, Japanese, and Chinese, and provides an array of settings to tailor the voice output based on tone, emotion, and style. By integrating this service, developers can create engaging audio content that resonates with fans of VTubers or enhances interactive applications.

Common use cases for this service include creating character voices for games, developing personalized voice assistants, or generating voiceovers for video content. Whether you are building a fan project or a professional application, the flexibility and quality offered by Hololive Style Bert Vits2 can significantly elevate your audio experience.

Prerequisites

Before integrating the Hololive Style Bert Vits2, ensure you have a valid Cognitive Actions API key and a basic understanding of making API calls.

Generate Hololive Virtual Voice

The "Generate Hololive Virtual Voice" action allows you to synthesize speech that captures the unique characteristics of different Hololive VTuber voices. This action addresses the challenge of creating authentic and dynamic voice outputs for various applications, making it a valuable tool for developers.

Input Requirements

To use this action, you need to provide a structured input that includes:

  • textInput: The text you wish to convert into speech.
  • speaker: The specific VTuber voice you want to use (e.g., EN_MoriCalliope).
  • style: The speech style (e.g., Neutral, Excited) to adjust the emotional tone of the output.
  • Additional parameters such as noiseScale, lengthScale, and styleWeight can help fine-tune the voice synthesis.

For example, a typical input might look like this:

{
  "style": "Neutral",
  "speaker": "EN_MoriCalliope",
  "textInput": "Hello there! This is test audio of a new Hololive text to speech tool running on Replicate!"
}

Expected Output

Upon successful execution, the action will return a URL link to the generated audio file. This allows you to easily access and utilize the synthesized voice in your projects.

Example output:

https://assets.cognitiveactions.com/invocations/0a07d6cd-0a77-4047-9787-a986e9cca4cd/781c288c-875a-43d8-aebb-153eebbaa28c.wav

Use Cases for this Action

  • Game Development: Create unique character voices that enhance the gaming experience.
  • Content Creation: Generate voiceovers for YouTube videos or podcasts that require a VTuber flair.
  • Interactive Applications: Develop voice assistants that speak in the style of beloved VTubers, making interactions more engaging for users.
import requests
import json

# Replace with your actual Cognitive Actions API key and endpoint
# Ensure your environment securely handles the API key
COGNITIVE_ACTIONS_API_KEY = "YOUR_COGNITIVE_ACTIONS_API_KEY"
# This endpoint URL is hypothetical and should be documented for users
COGNITIVE_ACTIONS_EXECUTE_URL = "https://api.cognitiveactions.com/actions/execute"

action_id = "2eed1068-9de2-4925-9967-0f9e4baf4bf2" # Action ID for: Generate Hololive Virtual Voice

# Construct the exact input payload based on the action's requirements
# This example uses the predefined example_input for this action:
payload = {
  "style": "Neutral",
  "speaker": "EN_MoriCalliope",
  "useTone": false,
  "sdpRatio": 0.2,
  "lineSplit": true,
  "styleText": "",
  "textInput": "Hello there! This is test audio of a new Hololive text to speech tool running on Replicate!",
  "noiseScale": 0.6,
  "lengthScale": 1,
  "noiseScaleW": 0.8,
  "styleWeight": 5,
  "useStyleText": false,
  "splitInterval": 0.5,
  "styleTextWeight": 0.7
}

headers = {
    "Authorization": f"Bearer {COGNITIVE_ACTIONS_API_KEY}",
    "Content-Type": "application/json",
    # Add any other required headers for the Cognitive Actions API
}

# Prepare the request body for the hypothetical execution endpoint
request_body = {
    "action_id": action_id,
    "inputs": payload
}

print(f"--- Calling Cognitive Action: {action.name or action_id} ---")
print(f"Endpoint: {COGNITIVE_ACTIONS_EXECUTE_URL}")
print(f"Action ID: {action_id}")
print("Payload being sent:")
print(json.dumps(request_body, indent=2))
print("------------------------------------------------")

try:
    response = requests.post(
        COGNITIVE_ACTIONS_EXECUTE_URL,
        headers=headers,
        json=request_body
    )
    response.raise_for_status() # Raise an exception for bad status codes (4xx or 5xx)

    result = response.json()
    print("Action executed successfully. Result:")
    print(json.dumps(result, indent=2))

except requests.exceptions.RequestException as e:
    print(f"Error executing action {action_id}: {e}")
    if e.response is not None:
        print(f"Response status: {e.response.status_code}")
        try:
            print(f"Response body: {e.response.json()}")
        except json.JSONDecodeError:
            print(f"Response body (non-JSON): {e.response.text}")
    print("------------------------------------------------")

Conclusion

The Hololive Style Bert Vits2 provides an innovative way for developers to create customized, high-quality voices that capture the essence of popular VTubers. With its flexibility in language and expressive capabilities, this service opens doors for various applications, from gaming to content creation. Start exploring the potential of Hololive Virtual Voices today and enhance your projects with captivating audio experiences!

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