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Audio Channel Mixer

Mix left and right channels into mono with specific ratios

Creates a mono file by mixing the left and right channels with customizable ratios. You can control how much of each channel contributes to the final output. Perfect for creating custom center-weighted mixes, emphasizing one channel, or creating unique mono conversions with specific balance.

Click to upload file or drag and drop file here

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

0 0.5 1

Amount of left channel in the mix. 0 = none, 1 = full volume.

0 0.5 1

Amount of right channel in the mix. 0 = none, 1 = full volume.

Key Facts

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

Overview

The Audio Channel Mixer blends stereo audio channels into a single mono track with precise control over left and right channel ratios. It allows you to create custom mono mixes by adjusting how much each channel contributes, ideal for balance adjustments or specific audio projects.

When to Use

  • •When converting stereo audio to mono for compatibility with mono playback devices or platforms.
  • •When you need to emphasize or reduce one channel in a stereo recording before mono conversion.
  • •When creating custom mono mixes with a specific left-right balance for podcasts, videos, or installations.

How It Works

  • •Upload a stereo audio file in a supported format such as MP3, WAV, or AAC.
  • •Adjust the left and right channel ratios using sliders, with values from 0 (no contribution) to 1.0 (full volume).
  • •Select the output format from options like MP3, AAC, M4A, OGG, Opus, FLAC, or WAV.
  • •Process the file to generate a mono audio file with your specified channel mix.

Use Cases

Converting stereo podcasts or interviews to mono for consistent audio on mono devices.
Adjusting channel balance in stereo recordings to enhance dialogue or specific elements before mono conversion.
Creating mono audio tracks for art installations, public announcements, or other single-channel applications.

Examples

1. Podcast Mono Conversion for Accessibility

Podcast Producer
Background
A podcast producer has a stereo interview recording that needs to be distributed in mono for listeners using mono headphones.
Problem
The stereo file has uneven audio levels between channels, causing imbalance when played in mono.
How to Use
Upload the stereo MP3 file, set left ratio to 0.7 and right ratio to 0.3 to balance the audio, and output as MP3.
Outcome
A mono MP3 file with balanced audio levels, ensuring clear and consistent playback on all devices.

2. Custom Mono Mix for Video Soundtrack

Background
A video editor is working on a project that requires a mono audio track with emphasized right-channel effects.
Problem
The original stereo soundtrack has effects primarily on the right channel, but the mono output needs to highlight them.
How to Use
Upload the stereo WAV file, set left ratio to 0.2 and right ratio to 1.0 to emphasize the right channel, and output as WAV.
Outcome
A mono WAV file with strong right-channel presence, suitable for the video's audio requirements.

Try with Samples

audio, file
Copyright-Free OPUS Audio Samples
Next-generation OPUS audio samples with superior compression and quality, featuring nature sounds and meditation music optimized for modern streaming
title token audio
audio
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

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FAQ

What audio file formats can I upload?

You can upload stereo audio files in common formats like MP3, WAV, AAC, and others, up to 200 MB.

How do the left and right ratios work?

The ratios control the volume level of each channel in the mono mix. For example, a ratio of 0.5 means half volume.

Can I create a mono file from only one channel?

Yes, set the ratio for the other channel to 0 to exclude it from the mix.

What output formats are supported?

Supported formats include MP3, AAC, M4A, OGG, Opus, FLAC, and WAV.

Is there a file size limit?

Yes, the maximum file size for upload is 200 MB.

API Documentation

Request Endpoint

POST /en/api/tools/audio-channel-mix

Request Parameters

Parameter Name Type Required Description
audioFile file (Upload required) Yes -
leftRatio range No Amount of left channel in the mix. 0 = none, 1 = full volume.
rightRatio range No Amount of right channel in the mix. 0 = none, 1 = full volume.
outputFormat select No -

File type parameters need to be uploaded first via POST /upload/audio-channel-mix 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-channel-mix": {
      "name": "audio-channel-mix",
      "description": "Mix left and right channels into mono with specific ratios",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-channel-mix",
      "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]