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Voice Configuration

Each language has specific voice options and settings:

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Selecting Voices

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By Language

  1. Select your target language first
  2. Available voices filter automatically
  3. Preview voices before selecting
  4. Choose based on gender and tone

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Voice Quality Tiers

TierQualityLanguagesCost
StandardGoodAllStandard
PremiumExcellentMajor+20%
NeuralBestSelect+50%
Premium and neural voices provide more natural intonation and better pronunciation for professional use cases.

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Voice Speed

Adjust speaking speed for different languages: 
{
  "voiceSpeed": 1.0
}
  • Range: 0.5 - 2.0
  • Default: 1.0
  • Recommended: 0.8 - 1.2 for most use cases

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Language-Specific Recommendations

LanguageRecommended SpeedNotes
English1.0Standard pace
Spanish0.9Slightly slower
French0.95Clear pronunciation
German0.9Complex compound words
Hindi0.85Ensure clarity
Japanese1.0Standard pace works well

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Voice Gender

Select voice gender based on your brand and use case: 
{
  "voiceGender": "female"
}
  • Options: male, female, neutral
  • Availability: Varies by language
Not all languages have all gender options. Check available voices for your selected language.

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Testing Voices

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Preview Feature

  1. Navigate to agent settings
  2. Go to Voice tab
  3. Select language and voice
  4. Enter sample text
  5. Click Preview
  6. Adjust settings as needed

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Sample Text

Use realistic conversation samples: English: 
Hello! Thank you for calling. How can I help you today?
Spanish: 
¡Hola! Gracias por llamar. ¿En qué puedo ayudarle hoy?
French: 
Bonjour ! Merci d'avoir appelé. Comment puis-je vous aider aujourd'hui ?

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Advanced Settings

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Pitch

Adjust voice pitch (where supported): 
{
  "voicePitch": 0
}
  • Range: -20 to +20
  • Default: 0
  • Note: Not available for all voices

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Stability

Control voice stability vs. expressiveness: 
{
  "voiceStability": 0.5
}
  • Range: 0.0 - 1.0
  • Lower: More expressive, varied
  • Higher: More stable, consistent

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Language-Specific Considerations

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Tonal Languages (Chinese, Vietnamese)

  • Use neural voices for better tone accuracy
  • Test thoroughly with native speakers
  • Adjust speed for clarity

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Languages with Compound Words (German, Dutch)

  • Slightly slower speed recommended
  • Ensure proper word separation
  • Test with long compound words

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Languages with Complex Scripts (Hindi, Arabic)

  • Always use native script
  • Verify all diacritical marks
  • Test pronunciation carefully

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Best Practices

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Match Voice to Brand

  • Professional: Use formal, clear voices
  • Friendly: Use warm, expressive voices
  • Technical: Use clear, measured voices

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Test with Native Speakers

  • Get feedback from native speakers
  • Test in real-world conditions
  • Adjust based on feedback

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Consider Context

  • Customer support: Clear, patient voice
  • Sales: Enthusiastic, engaging voice
  • Reminders: Friendly, brief voice

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Next Steps

Writing Prompts

Learn how to write effective multilingual prompts

Dynamic Switching

Enable language detection and switching