OuteTTS Lib v0.4 Release Notes

Interface Improvements

• Consolidated all interface versions into a single interface.py file for centralized management
• Implemented isolated model handling in separate version folders while maintaining core functionality for cross-compatibility
• Added Interface Version 3 implementation to support OuteTTS v1.0 models

New Features

• Smart text chunking for generating long audio clips from large text inputs
• Added DAC interface code to handle OuteTTS 1.0 audio encoding and decoding
• Added metadata for interface version compatibility in speaker files

Transformers Backend Patch for OuteTTS 1.0

• Implemented windowed repetition penalty processor (RepetitionPenaltyLogitsProcessorPatch) for improved text generation quality
• Applies penalties only to recent tokens (64-token window) rather than full context
• Addresses key quality issues in speech synthesis applications
• Maintains backward compatibility with standard HuggingFace interfaces

Streamlined Usage

Simplified code usage with a more modular and compact implementation:

:::python
output = interface.generate(
    config=outetts.GenerationConfig(
        text="Hello, how are you doing?",
        generation_type=outetts.GenerationType.CHUNKED,
        speaker=speaker,
        sampler_config=outetts.SamplerConfig(
            temperature=0.4
            # Additional sampler parameters
        ),
    )
)

Automatic Configuration

Added support for automatic config and model loading for v1.0 models:

:::python
# Auto-configuration approach
interface = outetts.Interface(
    config=outetts.ModelConfig.auto_config(
        model=outetts.Models.VERSION_1_0_SIZE_1B,
        backend=outetts.Backend.LLAMACPP,
        quantization=outetts.LlamaCppQuantization.FP16
    )
)

Manual configuration remains available:

:::python
# Manual configuration approach
interface = outetts.Interface(
    config=outetts.ModelConfig(
        model_path="...",
        tokenizer_path="...",
        backend=outetts.Backend.LLAMACPP,
        interface_version=outetts.InterfaceVersion.V3
    )
)

Performance and Dependencies

• Improved loading times by dynamically loading only required components
• Removed unused dependencies (further optimizations pending, particularly for WavTokenizer implementation)

Documentation

Full usage documentation is available at: 🔗 interface_usage.md