Inference

The Fish Audio S2 model requires a large amount of VRAM. We recommend using a GPU with at least 24GB for inference.

Download Weights

First, you need to download the model weights:

bash

hf download fishaudio/s2-pro --local-dir checkpoints/s2-pro

Command Line Inference

!!! note If you plan to let the model randomly choose a voice timbre, you can skip this step.

1. Get VQ tokens from reference audio

bash

python fish_speech/models/dac/inference.py \
    -i "test.wav" \
    --checkpoint-path "checkpoints/s2-pro/codec.pth"

You should get a fake.npy and a fake.wav.

2. Generate Semantic tokens from text:

bash

python fish_speech/models/text2semantic/inference.py \
    --text "The text you want to convert" \
    --prompt-text "Your reference text" \
    --prompt-tokens "fake.npy" \
    # --compile

This command will create a codes_N file in the working directory, where N is an integer starting from 0.

!!! note You may want to use --compile to fuse CUDA kernels for faster inference. However, we recommend using our sglang inference acceleration optimization. Correspondingly, if you do not plan to use acceleration, you can comment out the --compile parameter.

!!! info For GPUs that do not support bf16, you may need to use the --half parameter.

3. Generate vocals from semantic tokens:

bash

python fish_speech/models/dac/inference.py \
    -i "codes_0.npy" \

After that, you will get a fake.wav file.

WebUI Inference

1. Gradio WebUI

For compatibility, we still maintain the Gradio WebUI.

bash

python tools/run_webui.py # --compile if you need acceleration

2. Awesome WebUI

Awesome WebUI is a modernized Web interface built with TypeScript, offering richer features and a better user experience.

Build WebUI:

You need to have Node.js and npm installed on your local machine or server.

Enter the awesome_webui directory:
bash
```
cd awesome_webui
```
Install dependencies:
bash
```
npm install
```
Build the WebUI:
bash
```
npm run build
```

Start Backend Server:

After building the WebUI, return to the project root and start the API server:

bash

python tools/api_server.py --listen 0.0.0.0:8888 --compile

Access:

Once the server is running, you can access it via your browser: http://localhost:8888/ui