# FFmpeg Audio Noise Reduction Professional audio noise reduction using FFmpeg advanced filters (highpass, afftdn, loudnorm) for optimal audio cleaning > Canonical page: https://elysiatools.com/en/tools/ffmpeg-audio-noise-reduction - **Category:** Media - **Keywords:** ffmpeg, audio, noise, reduction, denoise, highpass, afftdn, loudnorm, clean ## Overview Clean unwanted noise from an audio file with FFmpeg filters, including high-pass filtering and adjustable noise reduction, then export the result as WAV, MP3, FLAC, AAC, OGG, or M4A. ## Inputs - **Audio File** (file): Select an audio file... - **High-Pass Frequency (Hz)** (range): Filter out low-frequency rumble and hum. Higher values remove more bass frequencies. - **Noise Reduction Level (dB)** (range): Noise floor reduction in decibels. More negative values = stronger reduction. Range: -50dB (max) to -10dB (min). - **Output Volume Gain** (range): Volume amplification after noise reduction. Compensates for volume loss during processing. - **Output Format** (select) ## When to use - Remove low-frequency rumble, hum, and other background noise from recordings. - Improve the clarity of voice recordings, interviews, podcasts, or spoken audio. - Adjust noise reduction and output gain before exporting cleaned audio in your preferred format. ## How it works - Upload one supported audio file in MP3, WAV, FLAC, AAC, OGG, MP4, or M4A format, up to 50 MB. - Set the high-pass frequency to reduce low-frequency rumble and hum. - Adjust the noise reduction level from -10 dB to -50 dB, where more negative values apply stronger reduction. - Choose an output volume gain and export the processed audio as WAV, MP3, FLAC, AAC, OGG, or M4A. ## Use cases - Clean spoken-word recordings by reducing background noise and low-frequency rumble. - Prepare interview or podcast audio for clearer listening. - Restore more consistent volume after applying noise reduction. ## Frequently asked questions ### What audio files can I upload? You can upload MP3, WAV, FLAC, AAC, OGG, MP4, or M4A audio files up to 50 MB. ### What does the high-pass frequency control do? It filters low-frequency rumble and hum. Higher values remove more bass frequencies. ### How strong can the noise reduction be? The noise reduction range is -10 dB to -50 dB. More negative values apply stronger reduction. ### Can I increase the processed audio volume? Yes. Set the output volume gain from 0.5x to 3x to compensate for volume loss. ### Which output formats are available? You can export cleaned audio as WAV, MP3, FLAC, AAC, OGG, or M4A. ## Related tools - [Audio Noise Reducer](https://elysiatools.com/en/tools/audio-noise-reducer): Remove background noise from audio files using various noise reduction algorithms - [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 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 Speed Changer](https://elysiatools.com/en/tools/audio-speed-changer): Change audio playback speed while maintaining original pitch using time-stretching algorithms - [Audio Mixer](https://elysiatools.com/en/tools/audio-mixer): Mix two audio files together with customizable timing control - [Audio to Multitrack MIDI (Draft)](https://elysiatools.com/en/tools/audio-to-multitrack-midi): Split a full mix into stems (drums/bass/other/vocals) and transcribe each to MIDI — a multi-track starting point for transcription - [Batch Audio Converter](https://elysiatools.com/en/tools/audio-batch-converter): Convert multiple audio files between different formats like MP3, WAV, FLAC, AAC, OGG, Opus with quality settings and batch processing - [Audio Channel Resample](https://elysiatools.com/en/tools/audio-channel-resample): Change the number of channels (mono/stereo) while keeping the same format ## Samples - [Copyright-Free M4A Audio Samples](https://elysiatools.com/en/samples/m4a-samples): Apple iTunes compatible M4A audio samples with AAC encoding, optimized for quality and file size balance - [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 ## Related content - [Video Audio Track Repair, Loudness, and Replacement](https://elysiatools.com/en/hubs/video-audio-track-repair-and-replacement): Decide what happens to the sound inside a video — repair noise and loudness, normalize to the EBU R128 delivery standard, replace a licensed music track, or strip audio entirely for silent delivery.