Media

Surround to Stereo

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

file· File resultOpen tool

Quick start

Call this tool from your code in three languages.

cURL

# 1) Upload each file first → returns { filePath }
curl -X POST 'https://api.elysiatools.com/upload/audio-surround-to-stereo' \
  -F 'file=@/path/to/audioFile.ext'

# 2) Call the tool with the returned filePath values
curl -X POST 'https://api.elysiatools.com/en/api/tools/audio-surround-to-stereo' \
  -F 'audioFile=/path/to/file.ext' \
  -F 'centerLevel=0.7' \
  -F 'surroundLevel=0.6' \
  -F 'lfeLevel=0.35' \
  -F 'outputFormat=mp3'

API reference

Send a POST request with your inputs as JSON. File parameters require a separate upload first.

Endpoint

HTTP

POST https://api.elysiatools.com/en/api/tools/audio-surround-to-stereo

Parameters

Name	Type	Required	Description
audioFile	fileupload 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

MCP integration

Add this tool to your Model Context Protocol server so AI agents can list and call it.

Server configuration

Add this block to your MCP client configuration:

mcp.json

{
  "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://api.elysiatools.com/mcp/sse?toolId=audio-surround-to-stereo",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

List available tools

After connecting to the SSE endpoint, list the exposed tools:

tools/list

{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/list"
}

Call this tool

Invoke the tool by its id, passing arguments built from its parameters:

tools/call

{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "tools/call",
  "params": {
    "name": "audio-surround-to-stereo",
    "arguments": {
  "audioFile": "https://example.com/file.ext",
  "centerLevel": 0.7,
  "surroundLevel": 0.6,
  "lfeLevel": 0.35,
  "outputFormat": "mp3"
}
  }
}

Chain multiple tools in one session with a comma-separated toolId list, e.g. /mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp (max 20).

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