# Audio Hum Harmonic Remover Remove 50/60Hz electrical hum and harmonic buzz from audio recordings. > Canonical page: https://elysiatools.com/en/tools/audio-hum-harmonic-remover - **Category:** Media - **Keywords:** audio, hum, de-hummer, de-buzzer, 50hz, 60hz, harmonics, ground loop, notch filter ## Overview Applies a stack of narrow harmonic notch cuts at the mains frequency and its multiples. Use it for ground-loop buzz, power-supply hum, guitar pickup noise, field recordings near electrical systems, and interview audio with steady 50/60Hz interference. It is more targeted than broad denoise, so speech and music detail are better preserved. ## Inputs - **Audio File** (file): Select an audio file - **Mains Frequency** (select) - **Custom Base Frequency (Hz)** (number) - **Harmonics to Remove** (number) - **Notch Width (Hz)** (number) - **Reduction Depth (dB)** (number) - **Preserve Bass Body** (checkbox) - **Output Format** (select) ## When to use - When an audio recording has a steady, low-frequency electrical hum from a ground loop or power supply. - When guitar tracks contain high-frequency harmonic buzz captured from single-coil pickups. - When field recordings or interview audio are contaminated by 50Hz or 60Hz mains interference from nearby power grids. ## How it works - Upload your audio file in any supported format. - Select the mains frequency (50Hz or 60Hz) or enter a custom base frequency. - Configure the number of harmonics to target, the notch width, and the reduction depth in decibels. - Process the file to apply the narrow notch cuts and download the cleaned audio in your preferred format. ## Use cases - Cleaning up podcast interviews recorded with poorly shielded microphones or USB ground loops. - Removing electrical buzz from electric guitar tracks recorded near computer monitors or fluorescent lights. - Restoring outdoor field recordings captured near power lines, generators, or electrical substations. ## Frequently asked questions ### What is the difference between this tool and a standard denoiser? This tool uses narrow notch filters targeting specific harmonic frequencies, preserving surrounding audio details better than broad-band noise reduction. ### How do I know whether to choose 50Hz or 60Hz? Choose 50Hz for recordings made in Europe, Asia, or Africa, and 60Hz for the Americas or Japan, matching the local power grid frequency. ### Can I remove hum at a frequency other than 50Hz or 60Hz? Yes, select the 'Custom Frequency' option and input your specific base frequency between 20Hz and 240Hz. ### What does the 'Preserve Bass Body' option do? It prevents the notch filters from overly thinning out the low-end frequencies of instruments like bass guitars or deep vocals. ### What output formats are supported? You can export your processed audio as MP3, WAV, FLAC, M4A, or OGG. ## Related tools - [Audio Click Removal](https://elysiatools.com/en/tools/audio-click-removal): Remove clicks and pops from vinyl recordings - [Audio DC Offset Fixer](https://elysiatools.com/en/tools/audio-dc-offset-fixer): Detect and remove DC offset from audio - [Audio Declicker](https://elysiatools.com/en/tools/audio-declick): Remove clicks and pops from audio files caused by vinyl records, digital errors, or other impulsive noise sources - [Audio Decrackler](https://elysiatools.com/en/tools/audio-decrackle): Remove crackles and subtle impulsive noise from audio files. Ideal for restoring old recordings, cassette tapes, and digitized vinyl with surface noise - [Audio Hum Removal](https://elysiatools.com/en/tools/audio-hum-removal): Remove electrical hum (50/60Hz and harmonics) from audio - [Audio Metadata Remover](https://elysiatools.com/en/tools/audio-metadata-remover): Remove all metadata from an audio file - [Audio Noise Reducer](https://elysiatools.com/en/tools/audio-noise-reducer): Remove background noise from audio files using various noise reduction algorithms - [Audio Breath Control Editor](https://elysiatools.com/en/tools/audio-breath-control-editor): Detect breaths in speech and naturally crossfade to reduce, remove, or keep them. ## Samples - [Copyright-Free FLAC Audio Samples](https://elysiatools.com/en/samples/flac-samples): Lossless FLAC audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free MP3 Audio Samples](https://elysiatools.com/en/samples/mp3-samples): Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio - [Copyright-Free WAV Audio Samples](https://elysiatools.com/en/samples/wav-samples): Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music - [Copyright-Free Raw PCM Audio Samples](https://elysiatools.com/en/samples/pcm-samples): Raw PCM s16le audio samples featuring nature ambience and relaxing music for waveform, playback, and conversion workflows ## Related content - [Audio Encoding and Format Conversion Tools](https://elysiatools.com/en/hubs/audio-convert): Compare audio format conversion, bitrate changes, sample-rate conversion, codec swaps, and export tools in one hub for delivery and archive workflows. - [Audio Editing and Cleanup Tools](https://elysiatools.com/en/hubs/audio-utility): Compare audio trimming, silence removal, fades, mixing, and denoise tools in one hub for podcast, voiceover, and music cleanup workflows. - [Audio Preview, Tone, and Effect Generator Tools](https://elysiatools.com/en/hubs/audio-generate): Compare audio preview generation, silence creation, ringtone building, fingerprinting, loudness reports, and effect-style audio generators in one hub. - [Audio Measurement and Inspection Tools](https://elysiatools.com/en/hubs/audio-analyze): Compare loudness, dynamic range, peak, BPM, key detection, spectral inspection, and metadata review tools in one hub for audio analysis.