Remove Electrical Hum from Audio
A low buzzing drone under a recording is almost always mains hum — 50 Hz in Europe/Asia, 60 Hz in the Americas — plus its harmonics. This tool notches out the hum frequencies precisely.
How it works
Rather than a broad EQ cut, we apply a cascade of narrow notch filters at the fundamental (50 or 60 Hz) and its harmonics. Because the notches are razor-thin, the hum disappears while the surrounding audio is untouched.
What it's good for
- Guitar-amp and DI recordings
- Ground-loop interference
- Fluorescent-light buzz
- Recordings near power supplies
Details
- Engine
- DSP
- Formats
- MP3, WAV, M4A, FLAC, OGG, AAC
- Price
- Free to try
Frequently asked questions
Use 60 Hz for recordings made in North/South America, 50 Hz for Europe, Africa, Asia and Australia. The default 60 Hz can be changed; the tool also notches the harmonics either way.
A low-cut removes bass warmth along with the hum and still leaves the 120/180 Hz harmonics. Precise notches kill only the hum frequencies and keep the rest of the sound intact.
Yes — narrow notches barely touch musical content, so hum comes out of instrument and vocal recordings with minimal coloration.
The notches are placed at the standard mains frequency, so a supply that has drifted noticeably off-pitch may not be fully caught; for that, try the broadband denoiser instead.
Yes. The cascade notches the fundamental plus several harmonics, which is where most of the audible buzzing energy in mains hum actually sits.
No GPU is needed. Notch filtering is a lightweight DSP pass that runs almost instantly, even on long files.
Yes. Each channel is notched independently, so the hum is removed without altering the stereo balance or tone.