Voice Selection & Customization
Platform Voices
Retell offers a library of pre-built voices with different:
- Gender — male, female, neutral
- Accent — American, British, Australian, Indian, and more
- Tone — professional, friendly, casual, authoritative
- Age — young adult, middle-aged, senior
Choosing the Right Voice
- Match the voice to your brand and use case
- Healthcare: calm, professional, reassuring
- Sales: energetic, confident, friendly
- Support: patient, clear, empathetic
- Preview voices in the agent settings before committing
Custom Voice Cloning
- Clone a specific voice from audio samples
- Useful for brand consistency or celebrity/spokesperson voices
- Requires high-quality audio samples (clean recording, no background noise)
- Process: upload samples → Retell processes → custom voice available in your account
Voice Settings
- Speed — how fast the agent speaks
- Pitch — higher or lower tone
- Stability — how consistent the voice sounds (lower = more expressive, higher = more consistent)
- Similarity boost — how closely to match the original voice (for cloned voices)