Wavli / audio repair for iPhone
A/B
Two short recordings, each cleaned by Wavli on an iPhone. Play the original, then the result.
Speech with steady broadband noise added, like a fan or air conditioning.
Level between words
−33.6 to −44.0 dBFS
−10.4 dB
The same speech with 50 Hz mains hum and its 100 and 150 Hz harmonics added.
Hum at 50 Hz
−23.4 to −61.3 dB
−37.9 dB
Measured from these two files. The speech is 8 kHz telephone-bandwidth audio with demonstration noise added, so judge the noise, not the voice quality.
Speech: Open Speech Repository (OSR_us_000_0010_8k.wav). Human voice recording with artificially added demonstration noise. Fan noise: pink broadband noise. Mains hum: 50 Hz with 100/150 Hz harmonics.
Signal path
In
Send audio or video from almost any app: tap Wavli in the share sheet, or pick a file from the Files app.
Choose
Wavli asks what you want to fix. Pick “Remove background noise”, or “Remove Hum” for electrical hum. Your original stays unchanged.
Set
One automatic cleanup for steady noise: fans, air conditioning, computers, constant room hiss. Set the Strength anywhere from Natural to Strong, and hear an 8-second preview before you commit.
Remove Hum asks for the mains frequency instead: Auto, 50 Hz, or 60 Hz.
Compare
Every result opens with Before and After players and waveforms, so you can compare the cleaned version with the original before you save anything.
Out
Export audio as M4A (AAC), WAV, MP3, or AIFF, and video as MP4. Send the result with Share, save it to Files, or, for videos, add it to Photos.
Two tools
One automatic cleanup for steady noise: fans, air conditioning, computers, constant room hiss. Set the Strength anywhere from Natural to Strong, and hear an 8-second preview before you commit.
Mains hum from cables, amps, and chargers has its own tool. Leave Remove Hum on Auto, or pick 50 Hz or 60 Hz if you know where the recording was made.
All processing happens on the device. Your recordings aren't uploaded to a server for cleaning.
More about your audio stays on your iphone →Clean the sound of a video and Wavli puts the cleaned audio back into it without re-encoding the picture. Save it as MP4 straight back to Photos.
More about video keeps its picture →
Send audio or video from almost any app by tapping Wavli in the share sheet, or pick files from the Files app. Export as M4A, WAV, MP3, AIFF, or MP4. On iOS 16 and later, Shortcuts gets two Wavli actions: Clean Recording and Convert Audio to M4A.
M4AWAVMP3AIFFMP4
More about gets files in and out easily →Limits Wavli is built for steady noise and hum. It doesn't remove clicks, crackle, or echo.
Wavli is free to try. Every tool and preview is free, and you can export your first files free. After that, saving new files needs Wavli Pro.
No. Noise and hum removal run on your iPhone, and your audio isn't sent to a server for processing.
Audio in M4A, MP3, WAV, AIFF, and CAF, and video in MOV and MP4. Opus and Ogg voice notes aren't supported. Voice memos work too: share them from Voice Memos and tap Wavli in the share sheet, or save them to Files first.
Wavli has no echo removal. It also has no separate wind tool. Its noise removal is designed for steady noise, so gusty wind isn't something we claim it fixes. For video shot on iPhone 16 or later, the Camera's built-in Wind Noise Reduction is the better option.
No. Record in Voice Memos, the Camera, or another app, then open the file in Wavli.
Any iPhone that runs iOS 15 or later. You don't need a new iPhone. Shortcuts actions need iOS 16 or later.
