How does FFT-based noise reduction work?

It analyzes the frequency spectrum of your audio to identify consistent noise patterns, then subtracts those frequencies while preserving speech and music. All analysis runs locally on your server.

Will noise reduction make my audio sound robotic?

At moderate settings, the result sounds natural. You can adjust the strength to find the right balance between noise removal and audio fidelity. Processing happens entirely on your own hardware.

Can I denoise a confidential meeting recording?

Yes. SnapOtter is self-hosted, so your audio files never leave your network. There is no cloud upload, making it safe for sensitive legal, medical, or business recordings.

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Noise Reduction

Apply FFT-based denoising to reduce background noise from audio recordings. Perfect for cleaning up interviews, field recordings, and conference calls. SnapOtter runs on your own server so sensitive audio stays private.

Deploy with Docker View Source

Features

FFT-based spectral denoising for effective broadband noise removal
Adjustable noise reduction strength to balance clarity and naturalness
Supports MP3, WAV, FLAC, OGG, and other common audio formats
Preserves speech and music frequencies while targeting noise profiles
Self-hosted processing keeps confidential recordings on your network

What you can do

Cleaning wind and traffic noise from an outdoor interview recording
Reducing fan hum and air conditioning buzz from a home studio voiceover
Improving clarity of a conference call recording with heavy background chatter
Removing steady hiss from a digitized cassette tape or vinyl rip

Self-hosted. Your files never leave your network.

SnapOtter runs entirely on your own infrastructure. Files processed with Noise Reduction are never uploaded to third-party servers. Deploy a single Docker container and process files with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.

Frequently asked questions

How does FFT-based noise reduction work?: It analyzes the frequency spectrum of your audio to identify consistent noise patterns, then subtracts those frequencies while preserving speech and music. All analysis runs locally on your server.
Will noise reduction make my audio sound robotic?: At moderate settings, the result sounds natural. You can adjust the strength to find the right balance between noise removal and audio fidelity. Processing happens entirely on your own hardware.
Can I denoise a confidential meeting recording?: Yes. SnapOtter is self-hosted, so your audio files never leave your network. There is no cloud upload, making it safe for sensitive legal, medical, or business recordings.

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