76 lines
3.2 KiB
HTML
76 lines
3.2 KiB
HTML
<!doctype html>
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<html lang="zh">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>麦克风诊断</title>
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<style>
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body { font-family: system-ui, -apple-system, "PingFang SC", sans-serif; max-width: 560px;
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margin: 0 auto; padding: 16px; background: #14161a; color: #e6e8eb; }
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h1 { font-size: 18px; }
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button { padding: 10px 18px; border-radius: 8px; border: none; background: #1f6feb;
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color: #fff; font-size: 14px; cursor: pointer; }
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pre { background: #1c1f24; padding: 12px; border-radius: 8px; overflow-x: auto; font-size: 13px; }
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.ok { color: #3fb950; } .bad { color: #f85149; }
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.meter { height: 18px; width: 100%; background: #1c1f24; border-radius: 4px; margin: 6px 0; overflow: hidden; }
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.meter > div { height: 100%; width: 0%; background: #3fb950; transition: width 60ms linear; }
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</style>
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</head>
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<body>
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<h1>🎤 麦克风诊断页（只请求麦克风）</h1>
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<p>在 <b>你刚才打开主页面的那个浏览器窗口</b> 打开本页，点下面按钮。</p>
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<button id="go">请求麦克风并测试</button>
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<pre id="out">等待操作…</pre>
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<div class="meter"><div id="bar"></div></div>
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<script>
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const out = document.getElementById("out");
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const bar = document.getElementById("bar");
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const log = (s, cls = "") => { out.innerHTML += (cls ? `<span class="${cls}">` : "") + s.replace(/</g, "<") + (cls ? "</span>" : "") + "\n"; };
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document.getElementById("go").onclick = async () => {
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out.innerHTML = "";
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log("1) 环境检查…");
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log(" secureContext = " + window.isSecureContext + " (必须是 true)");
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log(" navigator.mediaDevices = " + (navigator.mediaDevices ? "存在" : "不存在"));
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log("2) 枚举设备…");
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try {
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const devs = await navigator.mediaDevices.enumerateDevices();
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for (const d of devs) log(" [" + d.kind + "] " + (d.label || "(无标签=权限未授予)"));
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if (!devs.some(d => d.kind === "audioinput"))
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log(" ⚠️ 系统里没发现任何麦克风设备（驱动/虚拟声卡问题）", "bad");
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} catch (e) { log(" 枚举失败: " + e.name + ": " + e.message, "bad"); }
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log("3) getUserMedia…");
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let stream;
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try {
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stream = await navigator.mediaDevices.getUserMedia({ audio: true });
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log(" ✅ 麦克风授权成功", "ok");
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} catch (e) {
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log(" ❌ " + e.name + ": " + e.message, "bad");
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log(" （NotAllowedError=权限被拒；NotFoundError=无设备；NotReadableError=被其他应用占用）");
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return;
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}
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log("4) 电平检测（说话时绿条应跳动）…");
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const ctx = new AudioContext();
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const src = ctx.createMediaStreamSource(stream);
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const an = ctx.createAnalyser(); an.fftSize = 256;
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src.connect(an);
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const buf = new Uint8Array(an.frequencyBinCount);
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let peak = 0;
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setInterval(() => {
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an.getByteTimeDomainData(buf);
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let sum = 0;
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for (let i = 0; i < buf.length; i++) sum += Math.abs(buf[i] - 128);
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const rms = sum / buf.length;
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if (rms > peak) peak = rms;
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bar.style.width = Math.min(100, (rms / 40) * 100) + "%";
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}, 80);
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setTimeout(() => log(" 请对着麦克风说话，看上面的绿条。当前峰值=" + peak.toFixed(1) + "/127（≥10 说明有声音进）"), 2000);
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};
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</script>
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</body>
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</html>
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