Different noise sources occupy different frequency ranges. Low-frequency noise (below 100–200 Hz): HVAC hum, air conditioning, microphone handling noise, traffic rumble, and 50/60 Hz electrical mains hum. A highpass filter at 80–120 Hz is highly effective at eliminating these without affecting voice intelligibility. High-frequency noise (above 8–12 kHz): tape hiss, electrical interference, recording chain noise, microphone self-noise. A lowpass filter at 10–12 kHz removes this while leaving voice and most musical content intact.
AI Noise Remover
Remove Noise with AI
Eliminate background noise, hiss, and hum from audio recordings using AI processing. Perfect for podcasts, voiceovers, and cleaning up recordings.
AI-powered noise removal
Removes hiss and hum
Crystal clear voice
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Up to 100MB free • Output Format: MP3, WAV, FLAC
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Secure & Private
Files deleted in 2h
Fast Processing
No account needed
Blazing Fast
How to Convert
Convert any file in seconds — no software, no sign-up required.
01
Upload
Upload your audio file
02
Choose Format
Select output format
03
Download
Get your converted file
Why EasyConv
Why Use EasyConv
Professional-grade conversion with features designed for real-world workflows.
Quality Control
Adjust quality settings.
Cut High-Frequency Hiss
Lowpass filtering above 8–12 kHz removes tape hiss, electrical interference, and recording noise that sits above the vocal range.
Voice Clarity Boost
Optimised presets for spoken word recordings improve intelligibility of podcasts, interviews, voice-overs, and conference call recordings.
Lossless
No quality loss during conversion.
All Major Formats
Supports all popular formats.
Secure Processing
Files are processed securely.
300+ Formats
Supported Formats
Detailed breakdown of every format supported by this converter.
| Format | Description | Extension | Use Case |
|---|---|---|---|
| PODCAST MP3 | Remove room noise from recorded podcasts | .mp3 |
Interview recordings, home studio podcasts |
| VOICE WAV | Clean up voice recording noise | .wav |
Voice-over artists, narration cleanup |
| FIELD RECORDING | Reduce wind and ambient noise | .wav |
Outdoor recordings, nature soundscapes |
| VIDEO AUDIO | Strip and clean audio from video files | .mp4 |
YouTube vlogs, meeting recordings |
| OLD RECORDINGS | Restore vintage tape and vinyl audio | .flac |
Archive digitisation, music restoration |
| CONFERENCE AUDIO | Remove hum from conference recordings | .m4a |
Zoom calls, Teams meetings, webinars |
3 Simple Steps
Frequently Asked Questions
Everything you need to know about this conversion tool.
A highpass filter allows frequencies above a set threshold to pass through while attenuating lower frequencies. It's used to remove low-frequency noise like microphone handling noise, HVAC rumble, or 50/60 Hz electrical hum.
A lowpass filter allows frequencies below a threshold to pass through, cutting high-frequency noise. It's effective for removing tape hiss, electrical interference, and high-pitched background sounds that sit above the voice range.
When used conservatively, the impact on voice quality is minimal. Aggressive filtering can introduce a "telephone effect" on voices. We recommend starting with gentle preset values and checking the output before applying stronger settings.
Yes. Upload any MP4, MOV, MKV, or AVI video file and the tool will extract and process the audio track. The cleaned audio is returned as a standalone audio file, which you can then remix with the original video using a video editor.
Our tool performs noise reduction using frequency-based filters — this attenuates noise in specific frequency bands. True AI noise removal (spectral subtraction) is a more computationally intensive process. Our filter-based approach is fast and effective for most common noise types.
Input formats include MP3, WAV, FLAC, AAC, M4A, OGG, OPUS, WMA, MP4, MOV, MKV, and AVI. Output is delivered in the same format as the input, preserving your workflow.
12M+ users trust us
Who Uses This Tool
Real-world use cases from professionals across different industries.
Podcaster
Clean Home Studio Recordings
Remove HVAC hum, computer fan noise, and room ambience from home recordings so your voice sounds clear and professional.
YouTuber
Fix Noisy Video Audio Tracks
Upload your MP4 to strip background noise from vlog, tutorial, or interview videos without re-recording or using expensive software.
Business User
Clean Up Conference Call Recordings
Remove the electronic hum and background noise from Zoom, Teams, or phone call recordings before sharing or transcribing them.
Filmmaker
Reduce Wind Noise from Field Recordings
Outdoor recordings often suffer from wind rumble and low-frequency interference. A highpass filter at 80–120 Hz dramatically cleans up field audio.
Archivist
Restore Old Tape and Vinyl Recordings
Apply gentle highpass and lowpass filtering to aged analogue recordings to reduce tape hiss and crackle before digital archiving.
Voice-Over Artist
Polish Voice-Over Deliverables
Studio voice recordings often carry a subtle room resonance or mic self-noise. Filter it out before delivering to clients or ad agencies.
Why EasyConv
Comparison
See how we compare to other solutions
| Feature |
Our Tool EasyConv |
Desktop DAW | Other Online |
|---|---|---|---|
| Highpass filter | |||
| Lowpass filter | |||
| Video audio cleanup | |||
| Format preserved | |||
| No installation | |||
| Mobile compatible | |||
| Free |
Technical Specifications
Technical Specifications
Detailed technical information about our conversion engine.
Limits
- Max file size: 500 MB
- Filter presets: Highpass, Lowpass, Combined
- Output format matches input
FFmpeg
Highpass
Lowpass
Noise Reduction
Audio Cleanup
Engine
FFmpeg 6.x · highpass / lowpass biquad filters · single-pass processing
Quality
Filter applied in single FFmpeg pass; output matches input format and quality
Speed
Typical filter pass: 5–15 seconds for a 100 MB audio file
Security
HTTPS transfer · isolated temp dir · auto-purged in 2 h
Filter Type
Highpass + Lowpass
Target Freq
80–200 Hz / 8–12 kHz
Passes
Single FFmpeg pass
Auto-Delete
2 hours
Complete Guide
Understanding Audio Noise Removal: Filters, Techniques, and Limitations
Background noise is one of the most common problems in audio recordings — whether from HVAC systems, microphone self-noise, electrical interference, or outdoor ambience. Knowing which type of noise you are dealing with, and which filtering approach to apply, is the key to effective noise reduction without damaging the audio you want to keep.
Types of Noise and Their Frequency Profiles
Highpass Filters: Removing Low-Frequency Rumble
A highpass filter (also called a low-cut filter) attenuates frequencies below a set cutoff point while allowing higher frequencies to pass through. For voice recordings, setting the cutoff between 80 and 150 Hz removes most floor noise without affecting the fundamental frequencies of speech (which start around 85–180 Hz for a typical male voice, slightly higher for female voices). For music, use a gentler setting (60–80 Hz) to preserve the lower harmonics of bass instruments.
Lowpass Filters: Eliminating Hiss and Interference
A lowpass filter attenuates frequencies above its cutoff, removing high-frequency noise like tape hiss, analog equipment interference, and recording chain artefacts. For voice-only content, cutting above 8–10 kHz is usually safe — most intelligibility-critical consonants sit below 8 kHz. For music, be more conservative (12–16 kHz) to preserve cymbal brightness, acoustic guitar shimmer, and other high-frequency musical content.
Filter-Based vs Spectral Noise Reduction
Filter-based noise reduction (what this tool uses) applies a consistent frequency cut across the entire file. It is fast, predictable, and effective for broadband or clearly frequency-defined noise. Spectral noise reduction — as used in tools like Adobe Audition's "Noise Reduction" or iZotope RX — is more sophisticated: it analyses a "noise fingerprint" from a silent section and subtracts that noise profile adaptively throughout the file. For severe or complex noise problems, a dedicated spectral tool delivers better results. For common recording noise, frequency filtering is often sufficient and preserves more natural audio character.
Recommended Filter Settings for Common Scenarios
Use these as starting points and adjust by ear:
- Podcast / voice recording: Highpass at 100 Hz, Lowpass at 12 kHz
- Zoom / Teams call: Highpass at 150 Hz, Lowpass at 8 kHz
- Outdoor field recording: Highpass at 120 Hz (wind rumble)
- Vinyl / tape restoration: Highpass at 40 Hz, Lowpass at 15 kHz
- Electric guitar DI: Highpass at 80 Hz to remove amplifier hum
Always listen to the processed file before finalising — aggressive filtering can make voices sound thin or distant.