扬声器测试
测试左右扬声器，验证立体声分离度，并以安全音量播放扫频或固定频率音调。
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
- Lower the volume before starting, especially with powered speakers or amplifiers.
- Use Left and Right to identify which speaker plays each channel.
- Try the stereo sweep and confirm sound moves predictably between speakers.
- Use the frequency sweep to check for rattles, then stop playback.
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技术说明
The Web Audio API routes oscillators and a swept sine signal to the left and right output channels. A stereo test cannot compensate for room acoustics, speaker placement, or an operating-system virtual surround effect.
Speaker faults often appear as rattles, dropouts, or imbalance at particular frequencies. The sweep can reveal suspicious sounds, but interpreting them requires care and a reasonable listening level.
故障排除
Only one speaker plays
Check the cable, amplifier channel, and system balance. Swap the left and right cables to isolate the fault.
Rattle at high volume
Reduce the volume immediately. A loose cabinet, damaged driver, or objects vibrating nearby can cause rattling.
No bass
Check the subwoofer connection and crossover settings. Small speakers may not reproduce low frequencies at all.
Volume is still too loud
Use the in-page volume slider and lower your system volume before restarting playback.
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常见问题
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