Quick answer
Wind noise occurs when turbulent air hits the microphone capsule. Use a windscreen, move the mic closer, or switch to a lavalier or wireless kit with built-in wind protection.
Why wind noise happens
Most camera microphones use an exposed electret condenser capsule that is sensitive to air movement. When wind hits the capsule directly, it creates low-frequency rumbles that overpower your voice. The problem is worse with on-camera mics because they sit in the open and catch every breeze.
Trade-offs with common fixes
A foam windscreen reduces wind noise but muffles high frequencies slightly. A furry deadcat works better outdoors but looks bulky and can be less effective in heavy wind. Moving the microphone closer to the subject helps because you can lower the gain, but it may not be practical for wide shots or interviews.
Diagnose and fix wind noise step by step
- Symptom: You hear a low rumble or popping sound that gets worse as wind speed increases. The audio waveform shows strong low-frequency spikes.
- Likely cause: The microphone capsule is exposed to direct airflow. This is typical with on-camera shotguns or small clip-ons without a windscreen.
- Corrective action: Fit a foam windscreen or furry deadcat over the mic. If the problem persists, switch to a lavalier microphone placed under the collar or use a wireless kit like the Saramonic Blink 500 Pro B1 or SmallRig Forevala W60 to move the mic out of the wind. Test the fix by recording a short clip outdoors. If the rumble is still audible, try placing the lavalier under a layer of fabric.
- When to stop or choose another option: If you cannot eliminate wind noise with a windscreen and repositioning, the microphone itself may lack adequate wind rejection. Consider switching to a dedicated lavalier like the Sony ECM-L1 that can be hidden entirely under clothing, or use a wireless system that lets you place the transmitter in a sheltered pocket.
Gear that helps with wind noise
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Saramonic Blink 500 Pro B1 Wireless Microphone Kit: The Saramonic Blink 500 Pro B1 is a 2.4 GHz wireless system that provides broadcast-quality sound to cameras and mobile devices. Its included lavalier mics can be placed under clothing or behind a collar, where wind is much less of a problem than with an on-camera mic.
Saramonic Blink 500 Pro B1 Wireless Microphone Kit
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SmallRig Forevala W60 Wireless Microphone System (3487): The SmallRig Forevala W60 features advanced DSP noise processing and dual transmitters with a range up to 100 metres. DSP noise processing helps filter out wind rumble in post, and the dual transmitters let you mic two subjects who can stay far apart outdoors.
SmallRig Forevala W60 Wireless Microphone System (3487)
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Sony ECM-L1 Lavalier Microphone: The Sony ECM-L1 is a professional-grade omnidirectional lavalier microphone with an electret condenser capsule. Its small size and clip-on design let you position it close to the mouth, reducing the gain needed and minimising wind pickup.
