Audio 6 min read

How to Test and Adjust Microphone Noise Gates and Eliminate Feedback

Tired of background hums or keyboard click noise on voice calls? Learn how to configure microphone noise gates, adjust volume levels, and eliminate audio feedback.

How to Test and Adjust Microphone Noise Gates and Eliminate Feedback Cover

A clear voice is essential for online meetings, streaming, and voice chats. However, background hums, fan noise, and loud keyboard clicks frequently distract listeners. Configuring a microphone noise gate is the easiest way to ensure your mic only captures your voice.

1. What is a Microphone Noise Gate?

A noise gate acts as an automatic mute switch. It blocks all audio below a specific volume threshold (like room hum or mouse clicks) and opens up instantly when you speak. Adjusting the threshold ensures that background ambient noise is silenced when you are quiet.

2. How to Eliminate Acoustic Feedback Loops

Audio feedback (the loud high-pitched screech) occurs when your microphone captures sound coming out of your speakers and feeds it back into the loop. To prevent this, always use headphones during calls or adjust speaker placement away from the mic's pickup pattern.

3. Calibrate Mic Gain and Input Volume

Setting your mic gain too high introduces clipping and distortion, making your voice sound harsh. Use an online microphone tester to monitor your input volume level. Keep your normal speaking volume peaks around -6dB to -3dB to maintain a clean sound.

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