Voice Clone API: Zero-Shot Voice Cloning for Developers
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What is the Voice Clone API?
The Voice Clone API enables you to clone any voice from a short audio sample and generate speech in that voice. Using advanced zero-shot cloning technology, you can create custom voice outputs without training a dedicated model.
Use Cases
- Personalized Assistants: Create AI assistants with custom voices
- Content Localization: Maintain voice consistency across translations
- Podcast Production: Generate consistent narration voices
- Gaming: Create character voices from reference samples
- Accessibility: Clone familiar voices for text-to-speech applications
API Parameters
Required Parameters
| Parameter | Type | Description |
|---|---|---|
text |
string | Text to synthesize with the cloned voice |
audio |
string | URL to the audio file to clone the voice from |
Optional Parameters
| Parameter | Type | Default | Description |
|---|---|---|---|
model |
string | s1 |
TTS model: s1, speech-1.6, speech-1.5 |
format |
string | mp3 |
Output format: mp3, wav, pcm, opus |
temperature |
number | 0.7 |
Expressiveness (0-1). Higher = more varied |
enhance_audio_quality |
boolean | false |
Enable quality enhancement for reference audio |
Pricing
| Usage | Price (USD) | Credits |
|---|---|---|
| Per ~1000 characters | $0.015 | ~3 |
How to Use Voice Clone API
Step 1: Create an Account
Sign up at Hypereal to get started.
Step 2: Get Your API Key
Generate your API key from the dashboard.
Step 3: Make Your API Call
const response = await fetch('https://api.hypereal.com/v1/audio/generate', {
method: 'POST',
headers: {
'Authorization': 'Bearer YOUR_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({
model: 'audio-clone',
text: 'Hello! This is my cloned voice speaking to you.',
audio: 'https://example.com/voice-sample.mp3',
format: 'mp3',
enhance_audio_quality: true
})
});
const audioBlob = await response.blob();
Best Practices
- Quality reference audio - Use clean, noise-free audio samples for best results
- Sufficient duration - Provide at least 10-30 seconds of reference audio
- Clear speech - Reference audio should have clear pronunciation
- Enable enhancement - Use
enhance_audio_quality: truefor noisy samples - Match content style - Reference audio style affects output tone
Supported Audio Formats
- Input: MP3, WAV, M4A, FLAC
- Output: MP3, WAV, PCM, Opus
FAQ
How long should the reference audio be?
10-30 seconds of clear speech works best. Longer samples can improve quality.
Can I save a cloned voice for reuse?
Yes, create a voice model once and use the reference_id parameter in future requests.
What audio quality is recommended?
Use high-quality recordings (16kHz+ sample rate) with minimal background noise.
Why Choose Hypereal?
Access Voice Clone and 100+ other AI models through a single, unified API.
- One API key for all models
- Unified billing across providers
- Competitive pricing with volume discounts
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