How to Remove Hum from Audio Recordings
Low-frequency electrical hum (50Hz in Europe/Asia, 60Hz in the Americas) is caused by ground loops and electromagnetic interference near power cords.
To eliminate electrical hum: 1. Load the track into OnlineAudioEdit. 2. Highlight a region containing the hum. 3. Apply AI Noise Reduction with selection mode.
Open Remove Hum Tool →Detailed Instructions
Step 1: Check for Ground Loops
Electrical hum sounds like a continuous low-frequency drone or buzz.
Step 2: Apply Spectral Denoising
Use our spectral gating tool to suppress the 50/60Hz fundamental frequency and its harmonic overtones (120Hz, 180Hz, 240Hz).
Step 3: Export Clean Audio
Save your audio track free of low-end rumble and buzzing.
Try It Now: Free Online Audio Tool
Upload your audio file directly below to follow along with this guide:
Drop your audio file here to start
Supports MP3, WAV, M4A, AAC, FLAC, OGG, OPUS, WEBM • Free • No File Size Limit
Expert Tips & Best Practices
- Never run microphone cables directly parallel to AC power cables or power strips.
Frequently Asked Questions
What is the difference between 50Hz and 60Hz hum?
North America uses 60Hz AC electrical grids, while Europe, Australia, and parts of Asia use 50Hz grids. Both create distinct low-frequency buzzing in unshielded cables.