耳机测试
播放左声道和右声道音调，验证立体声方向，并生成用于耳机检查的测试频率。
测试接口
按“开始”后，您的浏览器可能会请求许可。如何使用这个工具
- Turn your system volume down before starting, then put your headphones on.
- Press Left to hear the left channel, then Right, and confirm both sides match.
- Run the channel sequence to verify stereo orientation, then raise the volume slowly.
- Use the frequency control for bass and treble checks, and stop playback when finished.
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技术说明
Oscillators are created with the Web Audio API and connected to a stereo panner or channel splitter. A left test only feeds the left channel, so reversed wiring or a mono adapter becomes obvious.
Tones are digital signals produced by the browser. The tool cannot measure sound pressure level, frequency response, or distortion; those require calibrated audio equipment.
故障排除
Sound only on one side
Check the headphone plug, adapters, and balance settings in the operating system. A mono adapter or faulty cable commonly causes this.
No sound at all
Confirm the correct output device is selected, the tab is not muted, and the volume is above zero.
Crackling or distortion
Lower the volume. Distortion at high levels may come from the headphones, the source, or the browser volume chain.
Bluetooth delay
Bluetooth headphones add latency. The delay test gives a rough indication but is not a wired-latency measurement.
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