> This is a page from the ElevenLabs documentation. For a complete page index, fetch https://elevenlabs.io/docs/llms.txt. For the full documentation in a single file, fetch https://elevenlabs.io/docs/llms-full.txt.

# Voice Isolator quickstart

This guide will show you how to remove background noise from an audio file using the Voice Isolator API.

> **Tip**
>
> Use the [ElevenLabs voice-isolator skill](https://github.com/elevenlabs/skills/tree/main/voice-isolator) to remove background noise from audio files from your AI coding assistant:
>
> ```bash
> npx skills add elevenlabs/skills --skill voice-isolator
> ```

## Using the Voice Isolator API

#### Create an API key

[Create an API key in the dashboard here](https://elevenlabs.io/app/settings/api-keys), which you’ll use to securely [access the API](/docs/api-reference/authentication).

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`**

```js title=".env"
ELEVENLABS_API_KEY=<your_api_key_here>
```

#### Install the SDK

#### SDK

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

```python
pip install elevenlabs
pip install python-dotenv
```

```typescript
npm install @elevenlabs/elevenlabs-js
npm install dotenv
```

#### CLI

Install the ElevenLabs CLI. Homebrew (macOS) and Scoop (Windows) are recommended.

**`Homebrew (macOS)`**

```bash title="Homebrew (macOS)"
brew install elevenlabs/tap/elevenlabs
```

**`Scoop (Windows)`**

```powershell title="Scoop (Windows)"
scoop bucket add elevenlabs https://github.com/elevenlabs/scoop-bucket
scoop install elevenlabs
```

**`npm`**

```bash title="npm"
npm install -g @elevenlabs/cli
```

**`curl`**

```bash title="curl"
curl --proto '=https' --tlsv1.2 -LsSf https://github.com/elevenlabs/cli/releases/latest/download/elevenlabs-cli-installer.sh | sh
```

> **Tip**
>
> Working with an AI coding assistant? Run `elevenlabs generate-skills` in your project to write a
> `SKILL.md` for every command group into `skills/`, so your assistant knows the CLI's full surface
> without you pasting docs. Use `--output-dir` to put them elsewhere. This reads the CLI's own
> embedded API definition, so it needs no API key and works offline — and it stays in step with
> whichever CLI version you have installed.

Then authenticate — this opens your browser to authorize the CLI:

```bash
elevenlabs auth login
```

> **Note**
>
> To play the audio through your speakers, you may be prompted to install [MPV](https://mpv.io/)
> and/or [ffmpeg](https://ffmpeg.org/).

#### Make the API request

#### SDK

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

```python maxLines=0
# example.py
import os
from dotenv import load_dotenv
from elevenlabs.client import ElevenLabs
from elevenlabs.play import play
import requests
from io import BytesIO

load_dotenv()

elevenlabs = ElevenLabs(
  api_key=os.getenv("ELEVENLABS_API_KEY"),
)

audio_url = "https://storage.googleapis.com/eleven-public-cdn/documentation_assets/audio/voice_with_background.mp3"
response = requests.get(audio_url)
audio_data = BytesIO(response.content)

audio_stream = elevenlabs.audio_isolation.convert(audio=audio_data)

play(audio_stream)
```

```typescript maxLines=0
// example.mts
import { ElevenLabsClient, play } from "@elevenlabs/elevenlabs-js";
import "dotenv/config";

const elevenlabs = new ElevenLabsClient();

const audioUrl =
  "https://storage.googleapis.com/eleven-public-cdn/documentation_assets/audio/voice_with_background.mp3";
const response = await fetch(audioUrl);
const audioBlob = new Blob([await response.arrayBuffer()], {
  type: "audio/mp3",
});

const audioStream = await elevenlabs.audioIsolation.convert({
  audio: audioBlob,
});

await play(audioStream);
```

Then run it:

```python
python example.py
```

```typescript
npx tsx example.mts
```

You should hear the isolated voice playing through your speakers.

#### CLI

Download the sample audio, then isolate the voice:

```bash
curl -O https://storage.googleapis.com/eleven-public-cdn/documentation_assets/audio/voice_with_background.mp3

elevenlabs audio-isolation convert \
  --audio voice_with_background.mp3 \
  --output isolated.mp3
```

Open `isolated.mp3` to hear the isolated voice.

## Next steps

#### [Voice Changer](/docs/eleven-api/guides/cookbooks/voice-changer)

Transform the voice in an audio file to a different voice

#### [Speech to Text](/docs/eleven-api/guides/cookbooks/speech-to-text)

Transcribe the isolated voice to text with the Speech to Text API

#### [API reference](/docs/api-reference/audio-isolation/convert)

Explore all Voice Isolator parameters and response formats

> ElevenLabs provides APIs and SDKs for text to speech, voice cloning, speech to text, sound effects, voice isolator, voice changer, and conversational AI agents. Build voice-enabled applications with lifelike audio generation.