Spectral Editor Online
Surgically erase a cough, hum, click, or beep. Draw a box on the spectrogram around the unwanted sound and attenuate just that time × frequency. Runs entirely in your browser.
Remove a Sound in 3 Steps
See it, box it, preview, download.
Upload Your Audio
Drag and drop an MP3, WAV, or other audio file. Up to 200 MB.
Box the Sound
Find the bright shape on the spectrogram and drag a box around it.
Preview & Download
A/B against the original, then Apply & Download a 192 kbps MP3.
Why Notevibes Spectral Editor
Frequency-domain editing, fully in your browser.
Log-Frequency Spectrogram
Time runs left→right, frequency bottom→top, loudness as color — so unwanted sounds show up as shapes you can see and target.
Box & Attenuate
Drag a box around a cough, hum, or click and attenuate just that time × frequency region — from a gentle −3 dB to full removal.
Live A/B Preview
Hear the original vs. the edit before you commit. What you preview is exactly what gets rendered.
Privacy First
The spectrogram, preview, and final render all run locally in your browser. Nothing is uploaded.
Any Audio Format
MP3, WAV, M4A, FLAC, OGG, AAC up to 200 MB.
Works on Mobile
Edit on any phone or tablet. iOS, Android, all major browsers.
Your Audio Stays on Your Device
Every file is processed locally in your browser. Nothing is uploaded.
No Upload
File never leaves your device
No Account
Start editing immediately
No Tracking
We never see your audio
What Spectral Editing Is For
Best for isolated blemishes in clean audio — not dense music.
Cough over speech
Erase a throat-clear or cough without cutting the sentence
Mains hum (50/60 Hz)
Remove the steady horizontal hum line from a recording
Mouth clicks
Lift short click streaks from voiceover and narration
Beep / notification
Take out a stray phone beep or alert from a take
Chair squeak / bump
Attenuate a one-off squeak or desk bump
Whistle / whine
Notch out a narrow-band whistle or electronic whine
Need More Than One Fix?
The Notevibes Online Audio Editor includes this spectral editor plus multi-track recording, trimming, EQ, compression, auto-duck, noise removal, and export — all free in your browser.
Open the Audio EditorConvert Any Audio Format
Free browser-based converters for every major audio format — no sign-up, no upload.
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Boost audio to peak volume without clipping.
Frequently Asked Questions
What is spectral editing?
Spectral editing edits audio in the frequency domain instead of the time domain. The tool shows a spectrogram — time runs left to right, frequency bottom to top, loudness as color. You draw a box around an unwanted sound and the tool attenuates only those frequencies during only that moment, leaving the rest of the audio untouched.
What sounds can I remove with a spectral editor?
It excels at isolated blemishes in otherwise-clean audio: a cough or throat-clear over speech, a mouth click (a short vertical streak), a 50/60 Hz mains hum (a thin horizontal line), a single beep, a chair squeak, or a bird chirp. It is not meant for dense music, where the box would overlap the music itself.
How do I find the sound on the spectrogram?
Coughs and clicks show up as bright vertical streaks at the moment they happen. Hum and whine show up as steady horizontal lines at a fixed frequency. Find the bright shape that lines up with the time you hear the problem, box it, and use Preview to confirm before applying.
How is this different from a noise remover?
A noise remover subtracts a steady background-noise profile across the whole file. A spectral editor targets a single, specific sound at a specific time and frequency — ideal for one-off blemishes a noise remover cannot touch.
Should I use it on music?
Spectral editing works best on clean speech or sparse audio where the unwanted sound is isolated. On a dense music mix there is no isolated sound to lift — a box would also remove part of the music — so it is less useful there.
Want full multi-track editing?
The Online Audio Editor includes this spectral editor plus multi-track recording, trimming, EQ, compression, auto-duck, and more — all in your browser.
Is the spectral editor free?
Yes. Completely free with no sign-up, no watermark, and no limits. Max file size is 200 MB.
Is my audio uploaded to a server?
No. All processing runs entirely in your browser using the Web Audio API and an in-browser FFT. Your file never leaves your device. Output is exported as a 192 kbps MP3.