Scenario

Hi, how can we help you today?

Resemble AI Chatterbox (text-to-speech) – The Essentials

1. Overview of Resemble AI Chatterbox

Resemble AI’s Chatterbox is an open-source text-to-speech (TTS) model that generates natural, professional-quality speech with exceptional speed, running faster than real-time playback. Licensed under MIT, Chatterbox has been benchmarked against leading closed-source systems like ElevenLabs, and is consistently preferred in side-by-side evaluations.

It can clone a voice from just five seconds of audio without any training, while also offering fine-grained emotional control, letting users adjust intensity, pacing, and randomness for more lifelike delivery. Chatterbox combines realism, flexibility, and reliability in a way that sets it apart from other open-source TTS models.

Whether you’re working on memes, videos, games, or AI agents, Chatterbox brings your content to life. It’s also the first open source TTS model to support emotion exaggeration control, a powerful feature that makes your voices stand out.

2. Getting Started with Resemble AI Chatterbox

2.1 Model Selection

Select Resemble AI Chatterbox from the model dropdown in Scenario's Audio Models section. The model works for both standard text-to-speech and voice cloning applications.

2.2 Understanding the Interface

The Chatterbox interface includes these main controls:

  • Prompt Field: Text input for speech generation

  • Voice Cloning Reference Audio File: Upload section for voice cloning

  • Exaggeration Slider: Controls emotion intensity (default 0.5)

  • Pace Weight Slider: Controls speech speed and prompt adherence (default 0.5)

  • Temperature Slider: Controls variation in output (default 0.8)

  • Seed Field: For reproducible results (0 for random)

3. Core Generation Controls

3.1 Prompt Input

Enter your text in the main prompt field. Use clear punctuation and proper sentence structure. The model interprets emotional context from text content automatically.

Examples:

  • Standard: "Welcome to our presentation on artificial intelligence."

  • Enthusiastic: "We're excited to announce our new discovery!"

  • Formal: "This matter requires immediate attention."

3.2 Voice Cloning Reference Audio File

Upload reference audio to clone specific voices. Use "Select from Library" for previously uploaded or generated audio files, or drag and drop directly from your computer, or from the Scenario gallery. The model clones voices without additional training.

Audio requirements:

  • Minimum 5 seconds, optimal 7-20 seconds

  • Clear speech without background noise

  • Natural speaking patterns with varied intonation

  • Avoid heavily compressed audio

3.3 Exaggeration Control

The Exaggeration slider (default 0.5) adjusts emotional intensity and expressiveness.

  • 0.1-0.3: Flat, monotone delivery

  • 0.4-0.6: Natural speech (0.5 default)

  • 0.7-0.9: More expressive delivery

  • 1.0+: Highly dramatic speech

Higher values increase speech speed. Adjust Pace Weight to compensate.

3.4 Pace Weight

The Pace Weight slider (default 0.5) controls speech speed and how closely the model follows your text.

  • 0.1-0.3: Slower, more creative interpretation

  • 0.4-0.6: Balanced control (0.5 default)

  • 0.7-1.0: Faster, stricter text following

3.5 Temperature

The Temperature slider (default 0.8) controls how much variation the model adds.

  • 0.1-0.5: Consistent, predictable output

  • 0.6-1.0: Natural variation (0.8 default)

  • 1.1-2.0: High variation, experimental results

3.6 Seed Control

Enter a number for consistent results across generations, or use 0 for random output. Same seed with same settings produces identical audio.

4. Optimization Tips

  1. Standard Use

    Use default settings (Exaggeration: 0.5, Pace Weight: 0.5, Temperature: 0.8) for most applications. Lower Pace Weight to 0.3 if reference audio has fast speech.

  2. Expressive Speech

    For dramatic content, use lower Pace Weight (0.3) and higher Exaggeration (0.7+). This balances expressiveness with controlled pacing.

  3. Consistent Voices

    Use identical seed values and reference audio for consistent character voices across multiple generations.

5. Text Input Best Practices

Write clear, punctuated text. Use periods, commas, and question marks for natural pacing. Break long text into shorter sentences.

Good formatting: "Welcome to our presentation. Today, we'll cover three topics. First, market analysis. Second, customer feedback. Finally, future strategies."

Poor formatting: "Welcome to our presentation today we'll cover three topics first market analysis second customer feedback finally future strategies"

Pronunciation help:

  • Unusual names: "Dr. Xiaoping (SHAO-ping)"

  • Acronyms: "GPT (G-P-T)"

  • Numbers: "March fifteenth" instead of "3/15"

6. Applications

Common uses include video narration, podcast production, game audio, voice assistants, multilingual content creation, and character voices for interactive media. The MIT license allows commercial use without restrictions.

7. Asset Management

Generated audio downloads in high-quality formats suitable for professional use. Use Scenario's organization tools (tags, collection) to manage voice libraries and maintain consistent character voices.

8. Troubleshooting

For best results, use clean reference audio and adjust controls based on content type. If speech sounds unnatural, reduce Temperature or adjust Pace Weight. For speed issues, modify Exaggeration values. Use fixed seeds for testing, then switch to random (0) for production variety.

External Sources

  1. Resemble AI Official Page: https://www.resemble.ai/chatterbox/

  2. GitHub Repository: https://github.com/resemble-ai/chatterbox

  3. License: https://github.com/resemble-ai/chatterbox/blob/master/LICENSE

Was this helpful?