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Why Remove Background Noise?
Background noise—hum, hiss, room tone, or fan noise—can distract from speech and music. Reducing it makes recordings clearer and more professional. Our tool gives you waveform preview, an adjustable reduction level, and advanced options (noise floor, hum removal at 50/60 Hz, rumble and hiss reduction, auto-adjust, adaptivity)—all in the browser.
Uses for noise reduction
- Voice & podcasts: Clean up dialogue and interviews
- Music: Reduce hiss or hum in recordings
- Video & content: Improve voiceovers and ambient audio
- Meetings & calls: Soften constant room or line noise
How Noise Reduction Works
The tool analyzes the audio and attenuates constant background noise while keeping the main content (speech or music) as intact as possible. You set a reduction level; higher values remove more noise but may affect quality if set too high. Advanced options include a configurable noise floor (dB), hum removal at 50 Hz or 60 Hz, optional rumble removal (low cut) and hiss reduction (high cut), auto-adjusting noise floor, and adaptivity. Output format, bitrate, and sample rate can be chosen. All processing runs in your browser.
What this tool offers
- Waveform view for original and cleaned audio
- Play from cursor and native audio controls
- Adjustable noise reduction level (10–100%)
- Advanced: Noise floor (dB), hum removal (50 Hz / 60 Hz), remove rumble, reduce hiss, auto-adjust noise floor, adaptivity, and denoiser method (auto / spectral / band)
- Output format: same as input, MP3, WAV, FLAC, OGG, AAC, M4A; bitrate and sample rate
- Preserve metadata; duration and estimated size per file; batch process and download all as ZIP
Tips and best practices
- Start moderate: Use 30–50% first; increase only if noise is still noticeable.
- Hum: If you hear a low buzz, enable 50 Hz and/or 60 Hz hum removal in Advanced.
- Noise floor: Lower (e.g. -60 dB) treats more as noise; raise (e.g. -40 dB) if the result is too aggressive.
- Steady noise: Works best on constant hum or hiss, not on sudden clicks or overlapping speech.
- Same format: Use “Same as input” to avoid re-encoding when you don’t need a different format.
- Metadata: Turn on “Preserve metadata” to keep track title, artist, and artwork in the cleaned file.
Powered by Web Audio API and optimized processing.
Frequently Asked Questions
Does noise reduction affect quality?
Higher reduction levels can sometimes affect clarity or introduce artifacts. Start with 30–50% and increase if needed. All processing happens in your browser.
What kind of noise can it remove?
The tool targets constant background noise such as hum, hiss, fan noise, and room tone. It works best on steady noise rather than sudden clicks or speech in the background.
Is my audio secure?
Yes. All processing happens entirely in your browser. Your audio files are never uploaded to any server. No data is stored or transmitted.
Can I choose the output format?
Yes. You can keep the same format as the input or convert to MP3, WAV, FLAC, OGG, AAC, or M4A. You can also set bitrate, sample rate, and preserve metadata.
Can I reduce noise on multiple files?
Yes. Add multiple files, then use Reduce noise all to process them in one go. You can download all cleaned files as a single ZIP.
What if the result sounds wrong?
Try a lower reduction level and process again. Very high levels can over-process and affect the desired audio. Use the Retry button to re-run with current settings.
What is hum removal and when should I use it?
Hum removal cuts a narrow band around 50 Hz (e.g. European mains) and/or 60 Hz (e.g. US mains) to remove electrical mains hum. Enable 50 Hz, 60 Hz, or both when you hear a constant low buzz in your recording.
What do the advanced noise floor and adaptivity do?
Noise floor (dB) sets the threshold below which sound is treated as noise; lower values are more aggressive. Adaptivity controls how quickly the filter adjusts: lower for changing noise, higher for steady noise. Auto-adjust noise floor lets the tool track and adapt to the noise level over time.