If your microphone produces an echo, buzzing, or feedback noise during a test or interview, it can significantly reduce audio clarity and may interfere with communication or automated proctoring checks. In this article, we explain the most common reasons for microphone echo or buzzing and the steps you can take to resolve the issue quickly.Documentation Index
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✅ Common Causes and Fixes
| What Might Be Wrong | What You Can Do |
|---|---|
| Microphone too close to speakers | Move the microphone away from your laptop speakers or any external speakers to reduce audio feedback. |
| Using built-in mic and speakers together | Use wired headphones or earphones to prevent internal audio looping and echo. |
| Faulty microphone hardware | Test with a different microphone or headset to rule out hardware issues. |
| Loose or damaged mic cable | Reconnect the microphone securely and avoid using frayed or damaged cables. |
| Microphone input volume too high | Lower the mic input/gain level in your system or audio settings. |
| Outdated or unstable audio drivers | Restart your device or update audio drivers to refresh the connection. |
| Echo cancellation disabled | Enable echo cancellation or noise suppression in your browser or system audio settings. |
| Background noise or electrical interference | Move to a quieter room, avoid power-heavy devices nearby, or use a noise-canceling microphone. |