〰️ 在线音频发生器（频率声音）Online Tone Generator
生成指定频率（1–20000 Hz）的正弦波、方波、三角波、锯齿波声音，可用于调音、测试耳机和听力。Generate a tone at any frequency (1–20000 Hz) with sine, square, triangle or sawtooth waves — for tuning and audio tests.
⚠ 请先调低音量，高频或大音量可能损伤听力。⚠ Lower your volume first; loud or high tones can damage hearing.
使用说明与常见问题How-to & FAQ
「在线音频发生器（频率声音）」是什么？What is the Online Tone Generator?
生成指定频率（1–20000 Hz）的正弦波、方波、三角波、锯齿波声音，可用于调音、测试耳机和听力。Generate a tone at any frequency (1–20000 Hz) with sine, square, triangle or sawtooth waves — for tuning and audio tests.
如何使用「在线音频发生器（频率声音）」？How do I use the Online Tone Generator?
在「在线音频发生器（频率声音）」中，按需设置「频率 Hz」、「音量%」等选项，然后点击「播放」按钮即可。In the Online Tone Generator: Set "Frequency Hz", "Volume %", then click "Play".
手机上能用吗？Does it work on mobile?
可以。「在线音频发生器（频率声音）」支持触屏操作，在手机和平板浏览器中均可使用，无需安装 App。Yes. The Online Tone Generator supports touch input and works in mobile and tablet browsers without installing an app.
「在线音频发生器（频率声音）」免费吗？需要注册吗？Is the Online Tone Generator free? Do I need an account?
「在线音频发生器（频率声音）」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Online Tone Generator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.