Aivis-Project/AivisSpeech-Engine

AivisSpeech Engine: AI Voice Imitation System - Text to Speech Engine

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/ 100
Established

# Technical Summary Built on VOICEVOX ENGINE's architecture, this engine uses ONNX Runtime for efficient CPU-based inference while supporting the AIVMX model format (.aivmx)—a specialized container combining learned models, hyperparameters, style vectors, and speaker metadata. The REST API maintains VOICEVOX compatibility but extends functionality with emotion-rich voice generation and style control through embedded style IDs. Deployable across Windows, macOS, and Linux with optional NVIDIA GPU acceleration via CUDA or DirectML, it integrates with the AivisSpeech desktop application and supports model discovery via local directories or S3-compatible storage.

150 stars.

No Package No Dependents
Maintenance 13 / 25
Adoption 10 / 25
Maturity 16 / 25
Community 18 / 25

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Stars

150

Forks

25

Language

Python

License

LGPL-3.0

Last pushed

Mar 08, 2026

Commits (30d)

0

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