Clone Voices from Text to Speech with Zyphra Zonos API

Description

Voice Cloning Workflow - Zyphra Zonos API

Who is this for?
This workflow is designed for developers, content creators, and businesses looking to automate high-quality voice synthesis using AI voice cloning technology.

What problem does this solve?
It automates the process of generating natural-sounding speech from text using a sample voice file, eliminating the need for manual voice recording and providing consistent voice output for applications like audiobooks, virtual assistants, or content localization.

What this workflow does
The workflow receives text and voice cloning parameters via webhook, reads a sample voice file from your storage, sends the data to Zyphra's Zonos API for voice synthesis, and saves the generated audio file to your specified output location.

Prerequisites
You'll need:
API key from Zyphra (obtain from https://playground.zyphra.com/settings/api-keys)
Account registration at https://playground.zyphra.com
Sample voice file stored on accessible disk/cloud storage
n8n instance running with webhook capabilities

Setup
Configure your Zyphra API key in the "Call Zyphra Clone API" node under Header Parameters (Name: X-API-Key, Value: your-api-key)
Ensure your sample voice files are accessible at the paths you'll specify
Test the webhook endpoint is accessible

Supported Audio Formats
The API supports multiple output formats through the mime_type parameter:

WebM** (default) - audio/webm
Ogg** - audio/ogg
WAV** - audio/wav
MP3** - audio/mp3 or audio/mpeg
MP4/AAC** - audio/mp4 or audio/aac

Usage Example

Endpoint: POST http://localhost:5678/webhook-test/voice-clone

Headers: Content-Type: application/json

Request Body:
{
"text": "Hello there! This voice sounds just like the sample!",
"speaking_rate": 18,
"sample_voice_path": "/data/output/sampleVoice.wav",
"output_path": "/data/output/",
"language_iso_code": "en-us",
"mime_type": "audio/wav",
"model": "zonos-v0.1-transformer",
"emotion": {
"happiness": 0.8,
"neutral": 0.3,
"sadness": 0.05,
"disgust": 0.05,
"fear": 0.05,
"surprise": 0.05,
"anger": 0.05,
"other": 0.5
}
}

Parameters

Required Parameters
text**: Text to synthesize into speech
sample_voice_path**: Path to your voice sample file
output_path**: Directory where generated audio will be saved

Optional Parameters (with defaults)
speaking_rate**: 15 - Speech speed
language_iso_code**: "en-us" - Language code
mime_type**: "audio/wav" - Output audio format
model**: "zonos-v0.1-transformer" - AI model to use
emotion**: Object with emotion levels (0-1 scale)