Kawaii Voice Changer

What if you can fulfill your dream of becoming a cute girl? Well, it's possible now (sort of).

• Audio transcription is done with Whisper.
• Translation is done with DeepL.
• Text to (cute) speech is done with Voicevox.

Table of Contents

• Demo
• Setup
• Quickstart
• Possible Improvement
• Helpful things
  • Get list of Voicevox Speakers
  • Get a single Voicevox Speaker info
  • Sample of using vox client alone to do TTS
  • List audio devices
  • Use audio output for voice chat

Demo

On my laptop, only CPU

Screen.Recording.2023-05-07.at.12.12.45.AM.mov

Setup

• Install Docker for voicevox engine
• Install Python 3.10 + Poetry, I recommend using asdf for this.
• Install dependencies with Poetry by running poetry install. If you don't want to use it, check pyproject.toml for Python and package versions.
• Rename/copy config.template.py to config.py.
• Download whisper's models (https://github.com/openai/whisper#available-models-and-languages) and update WHISPER_MODEL_PATH in config.py with the path to the model file of your choice.
• Update the array VOICE_OUTPUT_DEVICE_IDS in config.py with devices that you want the final voice to go to (e.g. speaker/headphone/"fake" microphone for voice chats)
• SET SPEAKER_ID in voicevox_client/voice_config.py to your desired speaker ID. See below for how to check the voices out.

Quickstart

Start Voicevox engine in 1 console:

# Depends on whether you have GPU or not
# With GPU
docker compose -f docker-compose.gpu.yml up
# Without GPU
docker compose -f docker-compose.cpu.yml up

Start the program in another console:

poetry run python main.py

# Or wish a shell inside poetry's virtualenv
poetry shell
python main.py

Possible Improvement

• Move whisper audio transcription + voicevox engine to some cloud server with GPU or just Google Colab if internet connection is good so less local resource is needed and things will run faster.

Helpful things

Get list of Voicevox Speakers

Run this inside a python console with asyncio (python -m asyncio):

from voicevox_client.client import Client

with Client() as client:
    for speaker in client.fetch_speakers():
        print(speaker)

speaker_uuid from this can be used to get more info about the speaker. Each speaker has a styles array, each element has its own id that can be used to for speaker initialization/voice synthesis.

We can combine speaker_uuid and id to check voice samples from the get speaker info API.

Get a single Voicevox Speaker info

Run this inside a python console with asyncio (python -m asyncio):

from voicevox_client.client import Client

with Client() as client:
    speaker = client.fetch_speaker_info("<speaker_uuid>")
    # speaker["portrait"] is an base64 encoded image
    # speaker["style_infos"] is an array where each element contains id (style id), portrait (base64 encoded image), icon (base64 encoded image), voice_samples (array of base64 encoded voice samples)
    # Sample code to write the base64 encoded data to a file:
    # decoded = base64.b64decode(speaker["style_infos"][0]["voice_samples"][0])
    # out_file = ("test.wav")
    # with open(out_file, 'wb') as file:
    #     file.write(decoded)

Sample of using vox client alone to do TTS

Run this inside a python console with asyncio (python -m asyncio):

from voicevox_client.client import Client

with Client() as client:
     with open("test.wav", "wb") as f:
        f.write(client.text_to_speech("交流できて嬉しいです", speaker_id=10))

List audio devices

Run this inside a python console:

import sounddevice as sd

print(sd.query_devices())

Use audio output for voice chat

Use something like VB-CABLE to forward the audio output of this program to a fake audio input device, then use that fake the device as audio input for your voice chat application, should work with most games/Discord/Zoom.