ElevenLabs Voice Isolator

Isolate and extract voice from audio files using ElevenLabs' advanced AI voice isolation technology. Remove background noise, music, and other audio elements to get clean, isolated voice recordings from mixed audio sources.

Note: Audio files must first be uploaded using the Asset API before voice isolation. The audioUrl parameter should contain the path returned from the Asset API upload.

Supported Models

elevenlabs-voice-isolator: ElevenLabs Voice Isolation service

Parameters

Parameter	Type	Required	Description
`type`	string	Yes	Feature type, must be "VOICE_ISOLATOR"
`model`	string	Yes	Model identifier, use "elevenlabs-voice-isolator"
`promptObject.audioUrl`	string	Yes	Path to audio file to isolate voice from (uploaded via Asset API)

Endpoint

POSThttps://api.1min.ai/api/features

Request Headers

Field	Value
API-KEY	`<api-key>`
Content-Type	`application/json`

Supported Audio Formats

Input Formats

MP3 - MPEG Audio Layer III
WAV - Waveform Audio File Format
M4A - MPEG-4 Audio
FLAC - Free Lossless Audio Codec
MP4 - MPEG-4 Part 14 (audio only)
WEBM - WebM Audio
OGG - Ogg Vorbis

Output Format

The voice isolator returns clean, isolated voice audio in high-quality format suitable for further processing or direct use.

How Voice Isolation Works

The ElevenLabs Voice Isolator uses advanced AI algorithms to:

Analyze Audio Components: Identify different audio elements (voice, music, noise, etc.)
Separate Voice Frequencies: Isolate human voice frequencies from other audio sources
Remove Background Elements: Eliminate music, ambient noise, and other non-voice sounds
Enhance Voice Quality: Optimize the isolated voice for clarity and quality
Return Clean Audio: Provide a clean voice track ready for use

Code Example

cURL
JavaScript
Python

curl --location 'https://api.1min.ai/api/features' \
--header 'API-KEY: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"type": "VOICE_ISOLATOR",
"model": "elevenlabs-voice-isolator",
"promptObject": {
  "audioUrl": "audios/2025_10_21_mixed_audio_with_music.mp3"
}
}'

fetch('https://api.1min.ai/api/features', {
method: 'POST',
headers: {
  'Content-Type': 'application/json',
  'API-KEY': 'YOUR_API_KEY'
},
body: JSON.stringify({
  type: 'VOICE_ISOLATOR',
  model: 'elevenlabs-voice-isolator',
  promptObject: {
    audioUrl: 'audios/2025_10_21_mixed_audio_with_music.mp3'
  }
})
});

import requests

url = "https://api.1min.ai/api/features"
headers = {
  "Content-Type": "application/json",
  "API-KEY": "YOUR_API_KEY"
}

data = {
  "type": "VOICE_ISOLATOR",
  "model": "elevenlabs-voice-isolator",
  "promptObject": {
      "audioUrl": "audios/2025_10_21_mixed_audio_with_music.mp3"
  }
}

response = requests.post(url, headers=headers, json=data)

Interactive Playground

Try the API directly in your browser:

API Playground

https://api.1min.ai/api/features

AI Model *

Audio URL *

Path to the audio file containing mixed audio with voice to isolate (upload via Asset API first)

Generated cURL Command:

curl -X POST "https://api.1min.ai/api/features" \
  -H "API-KEY: <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
  "type": "VOICE_ISOLATOR",
  "model": "elevenlabs-voice-isolator",
  "promptObject": {
    "audioUrl": "audios/mixed_audio_sample.mp3"
  }
}'

Use Cases

Podcast Production: Extract clean voice tracks from recordings with background music
Interview Enhancement: Isolate speaker voices from noisy environments
Content Creation: Clean up audio recordings for video production
Audio Restoration: Recover voice content from old or damaged recordings
Music Production: Separate vocals from instrumental tracks
Conference Calls: Extract clear voice from calls with background noise
Educational Content: Clean up lecture recordings for better clarity
Accessibility: Improve audio quality for hearing-impaired users
Voice Analysis: Prepare clean voice samples for further analysis
Broadcasting: Clean up audio for radio or podcast broadcasting

Best Practices

Input Audio Guidelines

File Quality: Use the highest quality source audio available
Voice Prominence: Works best when voice is clearly audible in the mix
File Size: Keep files under 50MB for optimal processing speed
Duration: Longer files may take more time to process
Mono vs Stereo: Both formats are supported

Optimal Results

Clear Speech: Source audio should contain distinguishable human speech
Moderate Background: Works well with music, ambient noise, or mixed audio
Avoid Extreme Cases: Very quiet voices or extremely loud backgrounds may affect quality
Multiple Speakers: Can isolate voices even when multiple people are speaking

Tips for Best Results

Upload Quality: Use the Asset API to upload high-quality source files
File Preparation: Ensure the source audio contains clear voice content
Format Selection: Use common formats like MP3, WAV, or M4A for best compatibility
Processing Time: Allow sufficient time for processing, especially for longer files
Quality Check: Review the isolated voice output for quality before use
Multiple Attempts: Try different sections of audio if the full file doesn't process well
Source Variety: Works with various audio sources (music, podcasts, calls, recordings)

Technical Specifications

Processing Capabilities

Real-time Processing: Efficient AI-powered voice isolation
High Fidelity: Maintains voice quality during isolation process
Multi-format Support: Works with various input audio formats
Noise Reduction: Automatically removes background noise and music
Voice Enhancement: Optimizes isolated voice for clarity

Limitations

Voice Quality: Output quality depends on input audio quality
Extreme Mixing: Very complex audio mixes may affect isolation accuracy
Processing Time: Longer files require more processing time
File Size: Large files may have processing limitations

Response Format

The API returns an audio file path that can be accessed via the Asset API:

{
  "id": "ai-record-id",
  "status": "SUCCESS",
  "resultObject": ["audios/2025_10_21_isolated_voice.mp3"],
  "createdAt": "2025-10-21T10:30:00.000Z"
}

Error Handling

Common error scenarios and solutions:

File not found: Ensure the source audio file was uploaded via Asset API first
Invalid audioUrl: Verify the path matches exactly what was returned from Asset API upload
Processing failed: Check that the source audio contains clear voice content
No voice detected: Ensure the audio file contains human speech
File too large: Reduce file size or try processing shorter segments

Rate Limits

Voice isolation operations may have specific rate limits due to AI processing requirements
Processing time varies based on file length and complexity
Monitor your usage to avoid hitting concurrent processing limits
Consider breaking very long files into smaller segments for faster processing

Supported Models​

Parameters​

Endpoint​

Request Headers​

Supported Audio Formats​

Input Formats​

Output Format​

How Voice Isolation Works​

Code Example​

Interactive Playground​

API Playground

Generated cURL Command:

Use Cases​

Best Practices​

Input Audio Guidelines​

Optimal Results​

Tips for Best Results​

Technical Specifications​

Processing Capabilities​

Limitations​

Response Format​

Error Handling​

Rate Limits​