# Audio Chorus

Apply a chorus effect

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

- **Category:** Media

- **Keywords:** audio, chorus, effect, modulation

## Overview

Adds multiple modulated delay voices to thicken the sound (ffmpeg chorus).

## Inputs

- **Audio File** (file): Select an audio file
- **Voices (array)** (textarea): \[{"inGain":0.5,"outGain":0.9,"delay":40,"decay":0.4,"speed":0.25,"depth":2}\]
- **Output Format** (select)

## When to use

- When you need to add depth and width to vocal tracks in music production.
- To create a richer sound for podcast intros, background music, or video game audio.
- When processing audio to achieve a modulated, layered effect for instruments or ambient sounds.

## How it works

- Upload an audio file in a supported format, such as MP3, WAV, or AAC.
- Optionally configure the chorus voices by entering a JSON array with parameters like inGain, outGain, delay, decay, speed, and depth.
- Select the desired output format from options including MP3, AAC, OGG, FLAC, and WAV.
- The tool processes the audio using ffmpeg's chorus effect and provides a downloadable file.

## Use cases

- Enhancing vocal harmonies in home studio recordings for a fuller sound.
- Adding modulation to electric guitar tracks in indie or rock music production.
- Creating atmospheric soundscapes for meditation apps or video game backgrounds.

## Frequently asked questions

### What audio file formats can I upload?

You can upload any audio format supported by ffmpeg, such as MP3, WAV, AAC, OGG, FLAC, and more.

### How do I adjust the chorus effect parameters?

Enter a JSON array in the 'Voices' field, specifying each voice with keys like inGain, outGain, delay, decay, speed, and depth. A default configuration is provided.

### What is the maximum file size for upload?

The audio file size limit is 200 MB, as set in the tool's file limit.

### Can I process multiple audio files at once?

No, the tool processes one audio file per use. Upload a single file for each operation.

### Does the output format affect audio quality?

Yes, lossless formats like FLAC or WAV preserve original quality, while lossy formats like MP3 may have compression. Choose based on your needs.

## Related tools

- [Audio Flanger](https://elysiatools.com/en/tools/audio-flanger): Apply a flanger effect
- [Audio Gated Reverb](https://elysiatools.com/en/tools/audio-gated-reverb): Apply a reverb effect that is cut off abruptly
- [Audio Phaser](https://elysiatools.com/en/tools/audio-phaser): Apply a phaser effect
- [Audio Reverse Reverb](https://elysiatools.com/en/tools/audio-reverse-reverb): Apply a reverb effect that builds up before the sound
- [Audio Ring Modulator](https://elysiatools.com/en/tools/audio-ring-modulator): Apply ring modulation for a metallic, bell-like sound
- [Audio Robotize](https://elysiatools.com/en/tools/audio-robotize): Apply a robot voice effect (pitch and bit crush)
- [Audio Tremolo](https://elysiatools.com/en/tools/audio-tremolo): Add a tremolo effect (amplitude modulation)
- [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 Reverb, Modulation, and Sound Design Effects Tools](https://elysiatools.com/en/hubs/audio-sound-design-effects): Choose, preview, compare, and verify reverb, delay, modulation, and character effects for music, video, podcast, and game sound design.