Voice memos from your phone
iPhone and Android voice recorders save M4A or MP3 files, and an M4A memo comes back as an M4A. Move the file to your computer (AirDrop, a cloud folder or a cable) and drop it in.
File Cleanup for voice recordings
Remove background noise from a voice recording
Make voice memos, interviews and lectures easy to listen to. Kleervox removes background noise from your recordings right in your browser — they are not uploaded for cleaning.
Recorded where life happens
The words matter. The noise doesn’t.
The best recordings are often the ones you could not plan: an interview in a café, a lecture in a ventilated hall, a thought captured on a walk. Cleaning them afterwards makes them easy to listen to again.
- Phone voice memos and voice notes
- Journalist and research interviews
- Lectures and classes recorded from the back row
- Meetings recorded on a laptop or phone
- Dictation for transcription
- Field recordings with wind or traffic
How it works
Three steps, no audio skills needed
- 01
Drop in the recording
From your phone, recorder or laptop — M4A, MP3, WAV and the other common formats.
- 02
Background noise removed
A speech-trained AI model takes out hum, traffic, chatter and hiss and keeps the voice natural.
- 03
Download and listen
Compare it with the original, then keep the clean version or download it again as MP3, M4A or WAV.
Interviews and transcription
Background noise is a common cause of transcription mistakes. Clean the interview first, then send the clean file to your transcription tool for a more accurate transcript.
Lectures and long meetings
Files can be up to 30 minutes long on Free and Pro, and up to 3 hours on Creator. On Creator, a full lecture or workshop of up to 3 hours cleans in one go. The loudness setting also evens out the level, so a quiet speaker is easier to follow.
Confidential stays confidential
The recording is cleaned in your browser on your own computer and is never sent to Kleervox for processing. A copy is stored only if you choose to save it to your private library.
Next time
Tips for a cleaner recording
Put the phone or recorder close to the person speaking — distance lets in more room noise and echo than any tool can remove. Turn away from fans and open windows, and lay the phone on something soft rather than a hard table that picks up taps and knocks.
Recording a call or an online meeting? The AI noise cancellation desktop app cleans your microphone live in Zoom, Meet and Teams. For podcasts, videos and other files, see how to remove background noise from audio files.
Guides
More ways to clean a recording
Remove background noise from audio files
The overview: every format, how the in-browser cleaning works, and the private library.
Remove background noise from video
MP4, MOV, WebM and MKV: clean the soundtrack while the picture stays exactly as it was.
Podcast noise removal
Episodes, remote interviews and music beds, delivered at podcast loudness.
Plans
Free to start, more hours when you need them
Try it free: 30 minutes of cleaning a month on the Free plan, no card needed. Pro and Creator add more hours of file cleaning every month, plus unlimited live-call noise cancellation in the desktop app. Files can be up to 30 minutes long on Free and Pro, and up to 3 hours on Creator. Private storage comes with Pro and Creator.
How do I remove background noise from a voice recording?
Copy the recording to your computer, sign in to Kleervox, open File Cleanup and drop it in. It is cleaned in your browser and the clean version downloads automatically — an M4A voice memo comes back as M4A.
Does it work with iPhone and Android voice memos?
Yes. Phone voice recorders usually save M4A or MP3 files, and both are supported (along with WAV, AAC, OGG, Opus and FLAC). Send the file to your computer first — the tool runs in a browser on a computer.
Can it clean a long lecture or meeting recording?
Yes. Files can be up to 30 minutes long on Free and Pro, and up to 3 hours on Creator. A far-away speaker is harder: noise removal works best when the voice is clearly louder than the noise, so a recording made close to the speaker cleans up best.
Will a cleaned recording transcribe better?
Often, yes. Speech-to-text tools make more mistakes when there is background noise, so cleaning first and transcribing the clean file usually gives a more accurate transcript.
Is my recording uploaded or listened to?
No. The cleaning happens in your browser on your own computer. Kleervox only receives the file's length, size and type to count it against your plan — never the audio, so confidential interviews and personal notes stay with you.
Hear every word
Clean your recording
Sign in, drop in a voice recording and download a clean version in minutes — it stays on your computer.