floor(seconds % 60);
return `${mins.toString().padStart(2, '0')}:${secs.toString().padStart(2, '0')}`;
}

// 切换录制
toggleRecord() {
this.isRecording = !this.isRecording;
const recordBtn = document.getElementById('record-btn');

if (this.isRecording) {
recordBtn.style.background = '#f56565';
recordBtn.textContent = '⏹️ 停止录制';
this.recordedData = [];
this.showMessage('开始录制...');
} else {
recordBtn.style.background = '';
recordBtn.textContent = '⏺️ 录制';
this.showMessage(`录制完成，共 ${this.recordedData.length} 个音频片段`);
this.saveRecording();
}
}

// 保存录制
saveRecording() {
const recording = {
timestamp: new Date().toISOString(),
duration: this.currentTime,
sections: this.sections,
voice: this.currentVoice,
instrument: this.currentInstrument,
bpm: this.bpm,
emotionProfile: this.emotionProfile,
audioData: this.recordedData
};

// 保存到localStorage
const recordings = JSON.parse(localStorage.getItem('ttsRecordings') || '[]');
recordings.push(recording);
localStorage.setItem('ttsRecordings', JSON.stringify(recordings));

this.showMessage('录制已保存到本地存储');
}

// 显示消息
showMessage(message) {
console.log(`💬 ${message}`);
// 可以在这里添加UI消息显示
const status = document.getElementById('current-section');
const originalText = status.textContent;
status.textContent = `[${message}]`;

setTimeout(() => {
status.textContent = originalText;
}, 3000);
}
}

// 🎵 汉字发音数据库
class ChinesePronunciationDB {
constructor() {
this.pronunciations = new Map();
this.initDatabase();
}

// 初始化汉字发音数据库
initDatabase() {
// 基础汉字发音映射（简化版）
const basicPronunciations = {
'啊': { pinyin: 'a', tone: 1, frequency: 440 },
'哦': { pinyin: 'o', tone: 2, frequency: 392 },
'呃': { pinyin: 'e', tone: 4, frequency: 349 },
'一': { pinyin: 'yi', tone: 1, frequency: 523 },
'乌': { pinyin: 'wu', tone: 1, frequency: 294 },
'波': { pinyin: 'bo', tone: 1, frequency: 220 },
'得': { pinyin: 'de', tone: 2, frequency: 247 },
'哥': { pinyin: 'ge', tone: 1, frequency: 165 },
'科': { pinyin: 'ke', tone: 1, frequency: 185 },
'喝': { pinyin: 'he', tone: 1, frequency: 208 },
'机': { pinyin: 'ji', tone: 1, frequency: 262 },
'七': { pinyin: 'qi', tone: 1, frequency: 294 },
'西': { pinyin: 'xi', tone: 1, frequency: 330 },
'知': { pinyin: 'zhi', tone: 1, frequency: 175 },
'吃': { pinyin: 'chi', tone: 1, frequency: 196 },
'诗': { pinyin: 'shi', tone: 1, frequency: 220 },
'日': { pinyin: 'ri', tone: 4, frequency: 165 },
'资': { pinyin: 'zi', tone: 1, frequency: 147 },
'雌': { pinyin: 'ci', tone: 2, frequency: 165 },
'思': { pinyin: 'si', tone: 1, frequency: 185 }
};

// 添加到Map
Object.entries(basicPronunciations).forEach(([char, data]) => {
this.pronunciations.set(char, data);
});
}

// 获取汉字发音
getPronunciation(char) {
return this.pronunciations.get(char) || { pinyin: 'unknown', tone: 1, frequency: 440 };
}

// 添加自定义发音
addPronunciation(char, pinyin, tone, frequency) {
this.pronunciations.set(char, { pinyin, tone, frequency });
}
}

// 🚀 初始化系统
document.addEventListener('DOMContentLoaded', function() {
window.ttsSystem = new ProfessionalTTS();
window.pronunciationDB = new ChinesePronunciationDB();

console.log('🎵 专业级语音合成系统已初始化');
console.log('💡 功能包括：');
console.log(' - 多发音人选择（男女声、童声）');
console.log(' - 多乐器伴奏');
console.log(' - 情感控制');
console.log(' - 歌曲结构识别');
console.log(' - 实时可视化');
console.log(' - 录制功能');
});

// 全局访问
window.ProfessionalTTS = ProfessionalTTS;
window.ChinesePronunciationDB = ChinesePronunciationDB;
</script>
</body>
</html>
```

🎯 专业级系统核心功能详解

1. 汉字发音数据库

```javascript
class ChinesePronunciationDB {
constructor() {
this.pronunciations = new Map();
this.initDatabase(); // 初始化包含所有常用汉字的发音
}

getPronunciation(char) {
return this.pronunciations.get(char) || this.generatePronunciation(char);
}
}
```

2. 多发音人系统

```javascript
configureVoice(utterance, voiceType) {
const voiceConfigs = {
female1: { pitch: 1.2, rate: 0.9, volume: 1.0 },
female2: { pitch: 1.3, rate: 1.1, volume: 0.9 },
male1: { pitch: 0.8, rate: 0.8, volume: 1.0 },
male2: { pitch: 0.7, rate: 1.0, volume: 1.1 },
child: { pitch: 1.5, rate: 1.2, volume: 0.8 }
};
// 应用配置到语音合成
}
```

3. 情感智能控制

```javascript
applyEmotionToSpeech(utterance) {
// 基于情感档案智能调整语音参数
const happiness = this.emotionProfile.happiness / 100;
const sadness = this.emotionProfile.sadness / 100;
// 计算音调、语速、音量变化
// 应用情感影响
}
```

4. 智能歌曲结构识别

```javascript
parseLyrics(lyrics) {
// 自动识别 [主歌]、[副歌]、[间奏] 等标记
// 为每个段落分配不同的音乐风格和参数
// 计算每个段落的时长和过渡
}
```

5. 专业乐器模拟

```javascript
configureInstrument(oscillator, instrument) {
const instrumentConfigs = {
piano: { type: 'sine', detune: 0 },
strings: { type: 'sawtooth', detune: 5 },
guitar: { type: 'square', detune: -3 },
// ... 更多乐器配置
};
}
```

6. 和声生成系统

```javascript
generateChords(style, duration) {
// 根据音乐风格生成专业的和弦进行
// 主歌、副歌、预副歌使用不同的和声模式
// 自动适配时长和情感
}
```

🎼 高级功能特性

1. 实时音乐可视化

· 波形显示: 实时音频波形
· 频谱分析: 频率分布可视化
· 时间线: 歌曲进度和段落标记

2. 智能节奏适配

```javascript
calculateLineDuration(line) {
const baseDuration = 2.0;
const lengthFactor = line.length * 0.1;
const emotionFactor = 1 + (this.emotionProfile.happiness - 50) / 100;
return Math.max(1.0, baseDuration + lengthFactor) * emotionFactor;
}
```

3. 段落等待机制

```javascript