免费 · 设备测试
扬声器与耳机测试（左/右）.
检查左右声道、低音和全频扫频以及相位，找出无声、左右颠倒或接线错误的扬声器。
RUNS IN YOUR BROWSER · NOTHING IS UPLOADED
Start with a low volume. Use headphones to check left and right.
使用方法: 扬声器与耳机测试（左/右）
输入数据或选择文件，调整设置并生成结果。复制或下载之前，请检查结果。
限制与支持格式
输入内容在您的设备上处理。
英语技术说明
Tones are generated by the browser; very low and very high frequencies depend on your speakers. Everything is calculated in your browser; nothing you type is uploaded.
Sine tones are routed with a stereo panner; sweeps glide exponentially between frequencies; the phase test sends the same tone to both channels, in phase or inverted.
The left tone is heard only in the left ear; on the inverted-phase test the sound becomes thin and diffuse, as it should.