Voice Changer quickstart | ElevenLabs Documentation

This guide will show you how to transform the voice of an audio file using the Voice Changer API.

Using the Voice Changer API

Create an API key

Create an API key in the dashboard here, which you’ll use to securely access the API.

Store the key as a managed secret and pass it to the SDKs either as a environment variable via an .env file, or directly in your app’s configuration depending on your preference.

.env

1 ELEVENLABS_API_KEY=<your_api_key_here>

Install the SDK

We’ll also use the dotenv library to load our API key from an environment variable.

1 pip install elevenlabs
2 pip install python-dotenv

To play the audio through your speakers, you may be prompted to install MPV and/or ffmpeg.

Make the API request

Create a new file named example.py or example.mts, depending on your language of choice and add the following code:

1 # example.py
2 import os
3 from dotenv import load_dotenv
4 from elevenlabs.client import ElevenLabs
5 from elevenlabs import play
6 import requests
7 from io import BytesIO
8 
9 load_dotenv()
10 
11 client = ElevenLabs(
12   api_key=os.getenv("ELEVENLABS_API_KEY"),
13 )
14 voice_id = "JBFqnCBsd6RMkjVDRZzb"
15 
16 audio_url = (
17     "https://storage.googleapis.com/eleven-public-cdn/audio/marketing/nicole.mp3"
18 )
19 response = requests.get(audio_url)
20 audio_data = BytesIO(response.content)
21 
22 audio_stream = client.speech_to_speech.convert(
23     voice_id=voice_id,
24     audio=audio_data,
25     model_id="eleven_multilingual_sts_v2",
26     output_format="mp3_44100_128",
27 )
28 
29 play(audio_stream)

Execute the code

1 python example.py

You should hear the transformed voice playing through your speakers.

Next steps

Explore the API reference for more information on the Voice Changer API and its options.