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Overview

Voice controls allow you to fine-tune how the selected voice delivers your text. You can adjust speed, expressiveness, and other parameters to match your content style and audience preferences.
Voice controls are optional. You can use default settings for good results, or fine-tune controls to achieve the perfect delivery for your content.

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Speed Control

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Speed Adjustment

Control how fast the voice reads your text: Speed Range:
  • Minimum: 0x (very slow)
  • Maximum: 2x (very fast)
  • Default: 1x (normal speed)
  • Step Size: 0.1x increments
Adjustment Methods:
  • Drag slider left/right
  • Click on slider track
  • Enter value directly (if supported)
  • Use increment buttons (if available)

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Speed Guidelines

Very Slow (0.5x - 0.8x):
  • Clear, deliberate delivery
  • Easy to follow
  • Good for complex information
  • May sound unnatural if too slow
Normal Speed (0.9x - 1.1x):
  • Natural conversational pace
  • Balanced delivery
  • Good for most content
  • Default recommended setting
Fast (1.2x - 1.5x):
  • Quick, energetic delivery
  • Time-efficient playback
  • Good for summaries
  • Maintains clarity
Very Fast (1.6x - 2.0x):
  • Very quick playback
  • Maximum time efficiency
  • May reduce clarity
  • Use with caution

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Speed Use Cases

Slow Speed:
  • Important instructions
  • Complex information
  • Educational content
  • Audience learning new language
Normal Speed:
  • General content
  • Most use cases
  • Standard delivery
  • Recommended default
Fast Speed:
  • Quick summaries
  • Time-constrained content
  • Review material
  • Energetic delivery

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Expressiveness Control

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Expressiveness Adjustment

Control the emotional range and variation in the voice: Expressiveness Range:
  • Minimum: 0 (more neutral)
  • Maximum: 2 (more expressive)
  • Default: 1 (balanced)
  • Step Size: 0.1 increments
Adjustment Methods:
  • Drag slider left/right
  • Click on slider track
  • Enter value directly (if supported)
  • Fine-tune gradually

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Expressiveness Guidelines

More Neutral (0 - 0.5):
  • Consistent, steady delivery
  • Minimal emotional variation
  • Professional, formal tone
  • Good for factual content
Balanced (0.6 - 1.0):
  • Natural variation
  • Moderate expressiveness
  • Good for general content
  • Default recommended setting
More Expressive (1.1 - 1.5):
  • Dynamic, varied delivery
  • Emotional engagement
  • Good for engaging content
  • More personality
Very Expressive (1.6 - 2.0):
  • Highly dynamic delivery
  • Strong emotional variation
  • Dramatic presentation
  • Use for special content

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Expressiveness Use Cases

Neutral:
  • News reporting
  • Technical documentation
  • Formal presentations
  • Objective content
Balanced:
  • General content
  • Most use cases
  • Standard delivery
  • Recommended default
Expressive:
  • Marketing content
  • Storytelling
  • Engaging presentations
  • Emotional content

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Control Interaction

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Speed and Expressiveness Together

Combined Effects:
  • Speed affects pacing
  • Expressiveness affects delivery style
  • Work together for overall effect
  • Adjust both for best results
Recommended Combinations:
  • Formal: Normal speed + Neutral expressiveness
  • Engaging: Normal speed + Expressive
  • Quick Summary: Fast speed + Neutral
  • Dramatic: Normal speed + Very expressive

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Control Best Practices

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Starting Point

Default Settings:
  • Start with defaults (1x speed, 1 expressiveness)
  • Good for most content
  • Professional quality
  • Can adjust from there
Testing:
  • Test with sample text
  • Compare different settings
  • Listen to results
  • Adjust based on feedback

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Adjustment Strategy

Gradual Changes:
  • Adjust in small increments
  • Test after each change
  • Compare before/after
  • Find optimal settings
Content-Based:
  • Match controls to content type
  • Consider audience preferences
  • Test with target audience
  • Document preferred settings

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Settings Documentation

Record Settings:
  • Note preferred settings
  • Document for consistency
  • Share with team
  • Create style guide
Settings Guidelines:
  • Establish default settings
  • Create settings templates
  • Train team on settings
  • Maintain consistency

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Advanced Controls

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Dictionaries (If Available)

Pronunciation Customization:
  • Select voice dictionaries
  • Custom pronunciation rules
  • Technical terms
  • Proper nouns

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Text Optimization

Arabic Text Optimization:
  • Optimize button for Arabic
  • Improves pronunciation
  • Adds natural pauses
  • Enhances quality

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Troubleshooting

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Controls Not Responding

Issue: Sliders not working Solutions:
  • Refresh page
  • Check browser compatibility
  • Try different browser
  • Clear cache

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Settings Not Saving

Issue: Controls reset Solutions:
  • Settings save with job
  • Check job creation process
  • Verify settings before generating
  • Settings apply to generation

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Quality Issues

Issue: Audio quality poor with settings Solutions:
  • Return to defaults
  • Adjust gradually
  • Test different combinations
  • Review text quality

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Next Steps

Creating Jobs

Learn how to create TTS jobs

Voice Selection

Choose the right voice for your content

Managing Jobs

Organize and manage your TTS jobs

Overview

Learn about Text to Speech features