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Audio Balance

Adjust the volume balance between left and right channels

Click to upload file or drag and drop file here

Maximum file size: 200MB Supported formats: audio/*

Key Facts

Category
Media
Input Types
file, number, select
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

The Audio Balance tool adjusts the volume balance between the left and right channels of an audio file. Upload your audio, set the desired percentages for each channel, and download the balanced output in your preferred format.

When to Use

  • •When audio playback is louder on one side, causing listener discomfort.
  • •To enhance stereo imaging for music production or creative audio projects.
  • •For accessibility needs, such as compensating for hearing differences between ears.

How It Works

  • •Upload an audio file in a supported format like MP3, WAV, or AAC.
  • •Specify the volume percentage for the left and right channels, ranging from 0% to 400%.
  • •Select the output format from options including MP3, AAC, OGG, FLAC, and more.
  • •Process the file and download the balanced audio directly to your device.

Use Cases

Correcting unbalanced audio recordings from microphones or devices.
Creating custom stereo effects for podcasts, music, or video soundtracks.
Adjusting audio for personal listening preferences on headphones or speakers.

Examples

1. Fixing Unbalanced Podcast Audio

Background
A podcaster recorded an episode with a microphone that captured more audio on the left channel.
Problem
The audio sounds skewed to the left, making it unpleasant for listeners.
How to Use
Upload the podcast audio file, set left channel to 80% and right channel to 120%, and choose MP3 output.
Outcome
The audio is now balanced, providing a better listening experience.

2. Enhancing Music Stereo Width

Background
A music producer wants to widen the stereo image of a track for a more immersive sound.
Problem
The track feels narrow and lacks spatial depth in the mix.
How to Use
Upload the track, adjust left and right channels to 150% each, and export as WAV for high quality.
Outcome
The stereo width is increased, giving the track a more expansive and engaging sound.

Try with Samples

audio, file
Copyright-Free M4A Audio Samples
Apple iTunes compatible M4A audio samples with AAC encoding, optimized for quality and file size balance
title token audio
audio
Copyright-Free AAC Audio Samples
High-quality AAC encoded audio samples for testing and development, featuring nature sounds and meditation music with excellent compression
title token audio
audio
Copyright-Free MP3 Audio Samples
Collection of royalty-free audio samples for testing and development purposes including nature sounds, meditation music, and ambient audio
title token audio
audio
Copyright-Free WAV Audio Samples
Uncompressed PCM WAV audio samples for testing and development, mirrored from MP3 set with nature sounds and meditation music
title token audio
audio

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FAQ

What audio formats are supported for input?

The tool accepts common audio formats such as MP3, WAV, AAC, OGG, FLAC, and others via the audio/* file type.

What is the maximum file size I can upload?

The maximum file size is 200 MB (209715200 bytes).

Can I make the audio mono by setting one channel to 0%?

Yes, setting either left or right channel to 0% will effectively create a mono output from the other channel.

How do I restore the original balance?

Set both left and right channel percentages to 100% to revert to the original balance.

Is there a limit to how much I can amplify the channels?

Channels can be amplified up to 400% of their original volume, but excessive amplification may cause distortion.

API Documentation

Request Endpoint

POST /en/api/tools/audio-balance

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
leftPercent number No -
rightPercent number No -
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/audio-balance to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-audio-balance": {
      "name": "audio-balance",
      "description": "Adjust the volume balance between left and right channels",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-balance",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]