puge
/
myApp


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>简单音频音量监测</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 600px;
            margin: 50px auto;
            padding: 20px;
            text-align: center;
            background-color: #f5f5f5;
        }
        .container {
            background: white;
            padding: 20px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
        }
        .volume-display {
            margin: 20px 0;
            font-size: 24px;
            font-weight: bold;
            color: #2c3e50;
        }
        .volume-bar {
            width: 100%;
            height: 30px;
            background: #ecf0f1;
            border-radius: 15px;
            margin: 20px 0;
            overflow: hidden;
        }
        .volume-level {
            height: 100%;
            background: linear-gradient(90deg, #2ecc71, #f1c40f, #e74c3c);
            width: 0%;
            transition: width 0.1s;
        }
        button {
            background: #3498db;
            color: white;
            border: none;
            padding: 10px 20px;
            font-size: 16px;
            border-radius: 5px;
            cursor: pointer;
            margin: 5px;
        }
        button:hover {
            background: #2980b9;
        }
        button:disabled {
            background: #bdc3c7;
            cursor: not-allowed;
        }
        .status {
            margin-top: 15px;
            font-size: 14px;
            color: #7f8c8d;
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>音频音量监测</h1>
        <audio id="audioF" src="https://cunchu.site/work/storage/soundSynthesis/1749269905file.wav"></audio>
        
        <div class="volume-display" id="volumeValue">-∞ dB</div>
        <div class="volume-bar">
            <div class="volume-level" id="volumeLevel"></div>
        </div>
        
        <button id="playBtn">播放</button>
        <button id="pauseBtn" disabled>暂停</button>
        
        <div class="status" id="status">准备就绪</div>
    </div>

    <script>
        // 获取DOM元素
        const audio = document.getElementById("audioF");
        const playBtn = document.getElementById("playBtn");
        const pauseBtn = document.getElementById("pauseBtn");
        const volumeValue = document.getElementById("volumeValue");
        const volumeLevel = document.getElementById("volumeLevel");
        const status = document.getElementById("status");
        
        // 音频分析变量
        let audioContext, analyser, dataArray;
        
        // 初始化音频分析
        function initAudioAnalysis() {
            audioContext = new (window.AudioContext || window.webkitAudioContext)();
            analyser = audioContext.createAnalyser();
            analyser.fftSize = 256;
            
            const source = audioContext.createMediaElementSource(audio);
            source.connect(analyser);
            analyser.connect(audioContext.destination);
            
            dataArray = new Uint8Array(analyser.frequencyBinCount);
        }
        
        // 分析音频音量
        function analyzeVolume() {
            if (!analyser) return;
            
            analyser.getByteFrequencyData(dataArray);
            
            // 计算平均音量
            let sum = 0;
            for (let i = 0; i < dataArray.length; i++) {
                sum += dataArray[i];
            }
            const average = sum / dataArray.length;
            
            // 转换为分贝 (0-255 映射到 -100dB 到 0dB)
            const db = average > 0 ? 20 * Math.log10(average / 255) + 100 - 100 : -100;
            
            // 更新音量显示
            updateVolumeDisplay(db);
            
            // 继续分析
            if (!audio.paused) {
                requestAnimationFrame(analyzeVolume);
            }
        }
        
        // 更新音量显示
        function updateVolumeDisplay(db) {
            // 限制db范围在-100到0之间
            const clampedDb = Math.max(-100, Math.min(0, db));
            const displayDb = clampedDb.toFixed(1);
            
            volumeValue.textContent = `${displayDb} dB`;
            
            // 更新音量条 (将-100到0映射到0%到100%)
            const volumePercent = ((clampedDb + 100) / 100) * 100;
            volumeLevel.style.width = `${volumePercent}%`;
            
            // 更新状态
            if (clampedDb > -50) {
                status.textContent = "检测到声音";
                status.style.color = "#27ae60";
            } else {
                status.textContent = "静音";
                status.style.color = "#e74c3c";
            }
        }
        
        // 播放按钮事件
        playBtn.addEventListener("click", function() {
            audio.play();
            playBtn.disabled = true;
            pauseBtn.disabled = false;
            status.textContent = "播放中...";
            
            // 初始化音频分析
            if (!audioContext) {
                initAudioAnalysis();
            }
            
            // 开始分析音量
            analyzeVolume();
        });
        
        // 暂停按钮事件
        pauseBtn.addEventListener("click", function() {
            audio.pause();
            playBtn.disabled = false;
            pauseBtn.disabled = true;
            status.textContent = "已暂停";
        });
        
        // 音频结束事件
        audio.addEventListener("ended", function() {
            playBtn.disabled = false;
            pauseBtn.disabled = true;
            status.textContent = "播放结束";
        });
    </script>
</body>
</html>