> ## Documentation Index
> Fetch the complete documentation index at: https://docs.voicelab360.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Voice Changer

> Transform voice characteristics in existing audio.

# Voice Changer

`POST /api/v1/speech/voice-changer`

Transforms the vocal characteristics of an input audio file to match a target voice profile.

**Credit rate:** 750 credits per minute of audio

## Request

```bash theme={null}
curl -X POST https://www.voicelab360.com/api/v1/speech/voice-changer \
  -H "Authorization: Bearer vl360_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "audio_url": "https://your-bucket.com/source.mp3",
    "target_voice_id": "vl360-neural-007",
    "format": "mp3"
  }'
```

## Parameters

| Parameter         | Type   | Required | Description                                        |
| ----------------- | ------ | -------- | -------------------------------------------------- |
| `audio_url`       | string | Yes      | Publicly accessible URL to source audio            |
| `target_voice_id` | string | Yes      | Target voice ID from the VoiceLab360 voice library |
| `format`          | string | No       | Output format: `mp3` (default), `wav`              |

## Response

```json theme={null}
{
  "job_id": "job_vc_001",
  "status": "completed",
  "output_url": "https://cdn.voicelab360.com/vc/job_vc_001.mp3",
  "duration_ms": 6100,
  "credits_used": 77
}
```

<Note>
  Voice changing requires explicit consent from any identifiable voice in the source audio. Use of this endpoint is governed by the VoiceLab360 Terms of Service and Trust and Rights Policy.
</Note>