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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.

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✅ Common Causes and Fixes

What Might Be WrongWhat You Can Do
Microphone too close to speakersMove the microphone away from your laptop speakers or any external speakers to reduce audio feedback.
Using built-in mic and speakers togetherUse wired headphones or earphones to prevent internal audio looping and echo.
Faulty microphone hardwareTest with a different microphone or headset to rule out hardware issues.
Loose or damaged mic cableReconnect the microphone securely and avoid using frayed or damaged cables.
Microphone input volume too highLower the mic input/gain level in your system or audio settings.
Outdated or unstable audio driversRestart your device or update audio drivers to refresh the connection.
Echo cancellation disabledEnable echo cancellation or noise suppression in your browser or system audio settings.
Background noise or electrical interferenceMove to a quieter room, avoid power-heavy devices nearby, or use a noise-canceling microphone.

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Additional Tips

If the issue persists, try the following:
  • Restart your device and rejoin the session
  • Ensure the correct microphone is selected in your browser or system audio settings
  • Disconnect and reconnect any external audio devices
  • Avoid using Bluetooth audio devices if possible, as they may introduce latency or interference

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🛠 Final Check: Test Your Microphone

Before joining your interview, verify your mic is working clearly. 👉 Run a Mic Test to confirm it’s working well. You should see yourself and hear audio from your mic input.