Audio Vocoder

Apply a vocoder effect using a carrier and modulator

Creates robotic, electronic voice effects by analyzing the spectral envelope of a modulator signal and applying it to a carrier signal. Classic effect used in electronic music, sci-fi, and voice synthesis.

Modulator Audio File *

Click to upload file or drag and drop file here

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

The voice or instrument to be vocoded (analyzed for spectral content).

Carrier Type

Type of carrier signal that provides the timbre. Synth = clean electronic, Noise = gritty texture.

Carrier Base Frequency (20-1000 Hz)

Base frequency for the synthesized carrier. Lower = deeper voice, Higher = brighter.

Carrier Waveform

Waveform shape of the carrier oscillator.

Frequency Bands (4-32)

Number of frequency bands to analyze. More bands = clearer articulation, less = smoother.

Analysis Window (10-200 ms)

Window size for spectral analysis. Shorter = more responsive, Longer = smoother transitions.

Wet/Dry Mix (0-1.0)

0 0.8 1

Balance between dry (original) and wet (vocoded) signal.

Output Format

API Documentation

Request Endpoint

POST /en/api/tools/audio-vocoder

Request Parameters

Parameter Name	Type	Required	Description
modulatorFile	file (Upload required)	Yes	The voice or instrument to be vocoded (analyzed for spectral content).
carrierType	select	No	Type of carrier signal that provides the timbre. Synth = clean electronic, Noise = gritty texture.
carrierFreq	number	No	Base frequency for the synthesized carrier. Lower = deeper voice, Higher = brighter.
carrierWaveform	select	No	Waveform shape of the carrier oscillator.
bands	number	No	Number of frequency bands to analyze. More bands = clearer articulation, less = smoother.
analysis	number	No	Window size for spectral analysis. Shorter = more responsive, Longer = smoother transitions.
mix	range	No	Balance between dry (original) and wet (vocoded) signal.
outputFormat	select	No	-

File type parameters need to be uploaded first via POST /upload/audio-vocoder 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-vocoder": {
      "name": "audio-vocoder",
      "description": "Apply a vocoder effect using a carrier and modulator",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=audio-vocoder",
      "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]