### 4-1. Quick Start

```bash
pip install -U qwen-tts
pip install -U flash-attn --no-build-isolation  # 선택, GPU 가속
```

### 4-2. 소스 설치

```bash
git clone https://github.com/QwenLM/Qwen3-TTS.git
cd Qwen3-TTS
pip install -e .
```

### 4-3. 기본 사용 (음성 클로닝)

```python
import torch
import soundfile as sf
from qwen_tts import Qwen3TTSModel

model = Qwen3TTSModel.from_pretrained(
    "Qwen/Qwen3-TTS-12Hz-1.7B-Base",
    device_map="cuda:0",
    dtype=torch.bfloat16,
    attn_implementation="flash_attention_2",
)

wavs, sr = model.generate_voice_clone(
    text="Hello, this is a voice cloning demo.",
    language="English",
    ref_audio="reference.wav",
    ref_text="Reference audio transcript"
)
sf.write("output.wav", wavs[0], sr)
```

### 4-4. 자연어 음성 디자인

```python
model = Qwen3TTSModel.from_pretrained(
    "Qwen/Qwen3-TTS-12Hz-1.7B-VoiceDesign",
    device_map="cuda:0",
    dtype=torch.bfloat16,
    attn_implementation="flash_attention_2",
)

wavs, sr = model.generate_voice_design(
    text="음성 디자인 데모입니다.",
    language="Chinese",
    instruct="A warm, gentle female voice with a slow speaking pace"
)
sf.write("designed_voice.wav", wavs[0], sr)
```

### 4-5. Web UI 데모 실행

```bash
qwen-tts-demo Qwen/Qwen3-TTS-12Hz-1.7B-CustomVoice --ip 0.0.0.0 --port 8000
```