Why wind is different from other noise
Most background noise travels through the air to the microphone from somewhere else. Wind does not: it is air striking the microphone itself. The turbulence it creates at the opening pushes directly on the membrane, which is why a breeze you can barely feel can sound like a storm on a recording.
That turbulence has three traits that set it apart:
- A deep rumble. Most of its energy sits in the low frequencies, below and around the bottom of the voice.
- Gusts. It comes and goes in bursts lasting from a fraction of a second to several seconds, where a fan holds steady.
- Overload. A strong gust can push the microphone past the loudest level it can capture. The waveform is then clipped (cut flat at the top), and the voice recorded at that moment is distorted.
Phones are especially exposed. Their microphones sit behind small holes on the edge of the case, with no foam in front of them, and most people hold the phone out in the open when they film outdoors.
How the app removes wind noise
With Noise Remover, wind is handled in two stages. First, the 80 Hz low-cut filter, on by default, turns down the deepest part of the rumble, below the range where a speaking voice has much to lose. Then the neural model, listening in short frames, recognises the gusts as noise and turns them down band by band. The effect is strongest when you stop talking: between sentences the wind drops away, and under your words it is reduced while the voice keeps priority.
In our lab test at full intensity, wind gusts dropped by 19 to 27 dB in the speaker’s pauses, and the voice itself came out 0.3 to 1.3 dB quieter: the louder the wind, the larger that drop. Those figures measure the model alone; in the app, the low-cut filter works in front of it. How we measured.
| Noise | Noise removed during pauses, in dB | Change in voice level |
|---|---|---|
| Wind gusts | 19 to 27 dB | −0.3 to −1.3 dB |
What noise removal cannot fix: a microphone the wind overloaded
Noise removal works because noise is added on top of the voice, so a model can estimate what belongs to each. Clipping is different. When a gust drives the microphone past its limit, the recorder writes a flattened copy of the whole sound, voice included, and the distortion becomes part of the voice. No denoiser can give back what was never recorded.
Wind that stays as loud as the voice without clipping is a milder version of the same limit: the gusts go, but the voice comes out thinner.
Settings for a windy recording
- Keep the low-cut filter on
It is on by default and does most of the work on the rumble. Switching it off and on again re-runs the cleaning, because the filter sits in front of the model.
- Raise the intensity for gusty audio
If gusts still poke through between sentences, try 90 to 100%. The default 80% stops near 29 dB of reduction to keep voices natural, mixing a little of the original back in.
- Check the windiest second
Play the loudest gust and flip between Original and Cleaned: the switch keeps the playback position, so you hear the same moment both ways. If the voice turns thin or watery, come back down.
- Trim the handling noise
The first and last seconds of an outdoor clip often hold the rustle of pressing record and stop. Move the trim handles past them before you export.
Leave the ready-to-publish level on as well: once the wind is gone, it evens the voice out toward −16 LUFS, a common level for spoken audio (what LUFS means).
Clean your windy clip on the phone, without uploading it.
Free · Android 8.0 or later, 64-bit
How to keep wind off the microphone
A few seconds of preparation outdoors save more than any setting:
- Turn your back to the wind. Your body becomes a wall between the gusts and the phone.
- Shield the microphone without covering it. On most phones the main microphone is a small hole on the bottom edge. Cup your hand around it, or hold the phone so your palm takes the wind, without touching the hole.
- Come closer. Holding the phone 15 to 20 cm from your mouth rather than at arm’s length makes your voice louder against the wind, so less needs removing.
- Put a windscreen on an external microphone. A foam cover helps in a breeze; a furry cover, the kind nicknamed a dead cat, handles real wind. A clip-on microphone under a jacket collar is sheltered too, as long as the fabric does not rub against it.
- Find shelter. A wall, a parked car, a tree trunk or a doorway takes the edge off the gusts. Step into its lee before you press record.
Noise Remover’s recorder can record from a wired, USB or Bluetooth microphone instead of the phone’s own, on Android 10 or later, so a clip-on microphone in its windscreen can feed the cleaning directly.
The rest of the outdoor checklist is in our guide to recording clean audio with a phone.
Cleaning wind from a vlog or outdoor video
Bring the clip in with Import video: Noise Remover reads MP4, 3GP, MKV, WebM, MOV files and cleans only their soundtrack. Export the cleaned audio, as M4A by default, place it under the clip in your video editor and mute the original sound. If you leave the trim untouched, the cleaned file starts at the same moment as the video’s soundtrack, so it lines up at the start of the clip.
With Pro you can skip the editor: export the video itself as an MP4 carrying the cleaned soundtrack, ready for YouTube, TikTok or Instagram Reels.
The full routine for any clip, indoors or out, is on remove noise from a video.