Surround to Stereo

Downmix a surround sound file (e.g., 5.1) to stereo

Downmix surround audio (like 5.1) to stereo with controllable center, surround, and LFE contribution. Keeps left/right content intact while blending center dialogue and ambience at adjustable levels so the stereo mix remains clear and balanced.

Audio File *

Click to upload file or drag and drop file here

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

Center Mix Level (0-1.0)

0 0.7 1

How much of the center/dialog channel to blend into stereo.

Surround Mix Level (0-1.0)

0 0.6 1

Ambience/rear contribution to the stereo mix.

LFE Mix Level (0-1.0)

0 0.35 1

How much sub/LFE energy to keep in stereo.

Output Format

API Documentation

Request Endpoint

POST /en/api/tools/audio-surround-to-stereo

Request Parameters

Parameter Name	Type	Required	Description
audioFile	file (Upload required)	Yes	-
centerLevel	range	No	How much of the center/dialog channel to blend into stereo.
surroundLevel	range	No	Ambience/rear contribution to the stereo mix.
lfeLevel	range	No	How much sub/LFE energy to keep in stereo.
outputFormat	select	No	-

File type parameters need to be uploaded first via POST /upload/audio-surround-to-stereo 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-surround-to-stereo": {
      "name": "audio-surround-to-stereo",
      "description": "Downmix a surround sound file (e.g., 5.1) to stereo",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-surround-to-stereo",
      "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]