Media

Audio Echo

Add an echo effect

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-echo' \
  -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-echo' \
  -F 'audioFile=/path/to/file.ext' \
  -F 'delayMs=300' \
  -F 'feedback=0.5' \
  -F 'mix=0.3' \
  -F 'echoCount=3' \
  -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-echo

Parameters

Name	Type	Required	Description
audioFile	fileupload required	Yes	—
delayMs	number	No	Time between original sound and first echo. Longer delays create dramatic canyon-like effects.
feedback	range	No	Controls how much each echo feeds back into the next. Higher values = more echoes.
mix	range	No	Controls the volume of echoes relative to original sound. Lower values = subtle effect.
echoCount

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-echo": {
      "name": "audio-echo",
      "description": "Add an echo effect",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=audio-echo",
      "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-echo",
    "arguments": {
  "audioFile": "https://example.com/file.ext",
  "delayMs": 300,
  "feedback": 0.5,
  "mix": 0.3,
  "echoCount": 3,
  "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).

Browse tools Open tool