Media

Audio Multi-band Compressor

Apply compression to specific frequency bands (3-band crossover + compressors)

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-multi-band-compressor' \
  -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-multi-band-compressor' \
  -F 'audioFile=/path/to/file.ext' \
  -F 'crossover1=200' \
  -F 'crossover2=4000' \
  -F 'thresholdDb=-18' \
  -F 'ratio=2.5' \
  -F 'attackMs=10' \
  -F 'releaseMs=120' \
  -F 'makeupDb=0' \
  -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-multi-band-compressor

Parameters

Name	Type	Required	Description
audioFile	fileupload required	Yes	—
crossover1	number	No	—
crossover2	number	No	—
thresholdDb	number	No	—
ratio	number	No	—

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-multi-band-compressor": {
      "name": "audio-multi-band-compressor",
      "description": "Apply compression to specific frequency bands (3-band crossover + compressors)",
      "baseUrl": "https://api.elysiatools.com/mcp/sse?toolId=audio-multi-band-compressor",
      "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-multi-band-compressor",
    "arguments": {
  "audioFile": "https://example.com/file.ext",
  "crossover1": 200,
  "crossover2": 4000,
  "thresholdDb": -18,
  "ratio": 2.5,
  "attackMs": 10,
  "releaseMs": 120,
  "makeupDb": 0,
  "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).