NeuTTS Air - Free and Lightweight Speech Synthesis Model with Offline CPU Running Support

What is NeuTTS Air

NeuTTS Air is open source lightweight speech synthesis model, developed by Neuphonic team, which can run in real time on local devices (e.g. cell phones, laptops, Raspberry Pi) without relying on the cloud. Using 0.5B parameter Qwen architecture and self-developed NeuCodec codec, it takes only 3 seconds of reference audio to clone the voice and generate speech with a naturalness of up to 4.2-4.5 points (out of 5 points). The model volume is about 500MB, supports offline use, and is suitable for scenarios such as smart home and personalized voice service, with privacy protection and low latency advantages.

Features of NeuTTS Air

• High Fidelity Speech Synthesis: The voice generated is natural and smooth, almost like a real person, providing a high-quality voice experience.
• Ability to run offline: Supports running on local devices without the need for an Internet connection, for scenarios with restricted networks or privacy sensitivity.
• Instant Voice Cloning: Just 3 seconds of audio samples are needed to quickly clone the speaker's voice for personalized voice output.
• Lightweight Architecture Design: An optimized hybrid architecture that balances performance, speed and quality for a wide range of application scenarios.
• Privacy protection mechanism: Runs locally to avoid uploading voice data to the cloud, ensuring user privacy and data security.
• Multi-platform compatibility: Provides a GGML format that is compatible with a wide range of operating systems and devices and is easy to deploy and use.
• Real-time inference performance: Real-time speech synthesis can be realized on mid-range devices to meet instant interaction needs.
• Generate Resulting Watermarks: Add watermarks to model-generated speech results to ensure traceability and compliant use and protect intellectual property.

Core Benefits of NeuTTS Air

• high fidelity: Speech synthesis effect is natural and smooth, close to the real person's voice, to improve the user experience.
• offline operation: No network connection is required and can be run on local devices, suitable for network-restricted or no network environments.
• Instant Voice Cloning: Only 3 seconds of audio samples are needed to clone the speaker's voice for personalized voice output.
• Lightweight Architecture: Model structure optimized to balance performance and resource consumption for multiple device deployments.
• Privacy: Local operation avoids data uploading to the cloud, ensuring user privacy and data security.
• Multi-Platform Compatibility: Supports a wide range of operating systems and devices, including cell phones, pen drives, Raspberry Pi, etc., for easy integration.
• real time inference: Real-time speech synthesis can be realized on mid-range devices to meet instant interaction needs.

What is NeuTTS Air's official website

• Github repository:: https://github.com/neuphonic/neutts-air
• HuggingFace Model Library:: https://huggingface.co/neuphonic/neutts-air

Who NeuTTS Air is for

• developers: Software developers who need to integrate offline voice functionality into their applications can take advantage of its lightweight and multi-platform compatibility for rapid development.
• business user: Enterprises with high data privacy and security requirements, such as those in the financial, healthcare, and judicial sectors, can be deployed locally to ensure data security.
• educational organization: Used to develop educational software or smart toys that provide natural voice interaction to enhance the learning experience.
• game developer: Generate personalized voices for game characters and interactive applications to enhance game immersion and fun.
• intelligent hardware manufacturer (i.e. company that makes smart hardware): Manufacturers such as smart homes, smart speakers, smart watches, etc., provide offline voice assistant capabilities for their devices.
• content creator: Creators who need to generate high-quality voice content quickly, such as audio podcasters and audiobook producers.
• individual user: Users who want to use offline voice assistants on their personal devices, or who have personalized needs for speech synthesis.