# Audio Denoise Chain

Apply a multi-step denoise chain with filters and optional RNNoise

> Canonical page: https://elysiatools.com/en/tools/audio-denoise-chain

- **Category:** Media

- **Keywords:** audio, denoise, noise reduction, highpass, lowpass, rnnoise

## Overview

Combines highpass/lowpass filtering with FFT denoise and optional RNNoise (arnndn) for deeper cleanup.

## Inputs

- **Audio File** (file): Select an audio file
- **Highpass Frequency (Hz)** (number): 80
- **Lowpass Frequency (Hz)** (number): 12000
- **Noise Floor (dB)** (number): -25
- **Enable RNNoise (arnndn)** (checkbox)
- **Output Format** (select)

## When to use

- When audio recordings have background noise like hums, hisses, or static.
- When preparing audio for podcasts, videos, or professional broadcasts to improve clarity.
- When cleaning up interview or field recordings for better listening or transcription accuracy.

## How it works

- Upload an audio file in a supported format such as MP3, WAV, or AAC.
- Configure highpass and lowpass frequencies to filter out unwanted noise bands.
- Set the noise floor in dB and optionally enable RNNoise for deeper noise reduction.
- Select the output format and process the file to download the cleaned audio.

## Use cases

- Cleaning up podcast episodes to remove background hum and enhance audio quality.
- Enhancing audio from video tutorials or presentations for clearer sound.
- Reducing noise in interview recordings to improve clarity for transcription or listening.

## Frequently asked questions

### What audio file formats are supported?

The tool accepts various audio formats including MP3, WAV, AAC, M4A, OGG, Opus, and FLAC, as indicated by the audio/* file type.

### What is RNNoise and when should I use it?

RNNoise is an optional neural network-based noise reduction algorithm. Enable it for advanced cleanup of complex noise patterns in audio.

### Can I adjust the noise reduction level?

Yes, you can set the noise floor in dB and configure highpass and lowpass frequencies to control the reduction intensity.

### What is the default output format?

The default output format is MP3, but you can choose from options like AAC, M4A, OGG, Opus, FLAC, or WAV.

### Is there a file size limit?

Yes, the maximum file size is 200 MB (209715200 bytes).

## Related tools

- [Assistive Listening Enhancer](https://elysiatools.com/en/tools/audio-assistive-listening-enhancer): Clarify listening audio with low-frequency cleanup, speech-presence EQ, conservative denoising, and level protection.
- [Classroom Recording Cleaner](https://elysiatools.com/en/tools/audio-classroom-recording-cleaner): Clean lecture recordings with speech-focused EQ, hum reduction, peak control, and optional long-silence trimming.
- [Audio Dither](https://elysiatools.com/en/tools/audio-dither): Apply dithering during bit depth reduction
- [Duplicate Audio Library Finder](https://elysiatools.com/en/tools/audio-duplicate-library-finder): Find exact and near-duplicate audio across uploaded files or a ZIP, including copies saved with different codecs.
- [Audio Noise Reduction](https://elysiatools.com/en/tools/audio-noise-reduction): Reduce background noise
- [Audio Robotize](https://elysiatools.com/en/tools/audio-robotize): Apply a robot voice effect (pitch and bit crush)
- [Audio Sermon & Lecture Splitter](https://elysiatools.com/en/tools/audio-sermon-lecture-splitter): Split a long sermon or lecture at reliable silences and optional timestamped topic, applause, or music hints.
- [Audio Vocoder](https://elysiatools.com/en/tools/audio-vocoder): Apply a vocoder effect using a carrier and modulator

## 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 Restoration, Noise Repair, and Cleanup Tools](https://elysiatools.com/en/hubs/audio-restoration-repair-workflows): Diagnose and repair clicks, hum, clipping, crackle, room sound, hiss, and harshness without promising lossless restoration.