# Extract LFE Channel

Extract the LFE (subwoofer) channel

> Canonical page: https://elysiatools.com/en/tools/audio-lfe-channel-extract

- **Category:** Media

- **Keywords:** audio, surround, lfe, subwoofer, extract, mono, bass, stem

## Overview

Pulls out the LFE/subwoofer channel from a surround file and exports it as mono. Handy for inspecting low-end content, creating separate sub stems, or balancing bass elements independently.

## Inputs

- **Audio File** (file): Select a surround audio file (e.g., 5.1)
- **Output Format** (select)

## When to use

- When you need to isolate and analyze the subwoofer channel from a surround mix.
- When creating separate low-frequency stems for mixing or mastering.
- When adjusting bass levels independently without affecting other channels.

## How it works

- Upload a surround audio file (e.g., 5.1 format).
- Select the desired output format from options like WAV, MP3, or others.
- The tool extracts the LFE channel and exports it as a mono audio file.

## Use cases

- Inspecting low-end content in surround mixes for quality control.
- Creating separate subwoofer stems for live sound or post-production.
- Balancing bass elements independently in music or film audio.

## Frequently asked questions

### What is the LFE channel?

The LFE (Low-Frequency Effects) channel is a dedicated channel in surround sound for low-frequency audio, typically handled by a subwoofer.

### What audio formats are supported for input?

The tool accepts common surround audio formats; ensure your file is in a supported format like 5.1 surround.

### Can I choose the output format?

Yes, you can select from various formats including WAV, MP3, AAC, M4A, OGG, Opus, and FLAC.

### Is there a file size limit?

Yes, the audio file must be under 200 MB.

### What is the output file?

The output is a mono audio file containing only the extracted LFE channel.

## Related tools

- [Extract Center Channel](https://elysiatools.com/en/tools/audio-center-channel-extract): Extract the center channel from a surround audio file or video audio track
- [Extract Left Channel](https://elysiatools.com/en/tools/audio-left-channel-extract): Extract only the left channel to a mono file
- [Extract Right Channel](https://elysiatools.com/en/tools/audio-right-channel-extract): Extract only the right channel to a mono file
- [Album Art Extractor](https://elysiatools.com/en/tools/audio-album-art-extractor): Extract the album art from an audio file
- [Audio Ambience Loop Generator](https://elysiatools.com/en/tools/audio-ambience-loop-generator): Extract the background ambience/room tone from a fragment and generate a seamless loop of any target length.
- [Video to MP3 Converter](https://elysiatools.com/en/tools/video-to-mp3): Extract audio from video and convert to MP3 with bitrate, resampling, and channel options
- [Video to WAV Converter](https://elysiatools.com/en/tools/video-to-wav): Extract audio from video and convert to WAV (PCM) with optional resampling and channel selection
- [Album Art Adder](https://elysiatools.com/en/tools/audio-album-art-adder): Add or change the album art of an audio file

## 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 Channel Routing and Delivery Verification](https://elysiatools.com/en/hubs/audio-channel-routing): Route, split, join, and convert mono or stereo audio while preserving left/right intent and checking the final file before delivery.