Open Avatar Chat – An Open – source Real – time Digital Human Dialogue System Launched by Alibaba

What is Open Avatar Chat

Open Avatar Chat is an open-source, modular real-time digital human dialogue system developed by Alibaba. It supports full functionality on a single computer. Open Avatar Chat enables low-latency real-time conversations (with an average response delay of about 2.2 seconds) and is compatible with multimodal language models, supporting various interaction methods including text, audio, and video. With its modular design, users can flexibly replace components as needed to achieve different functional combinations. Open Avatar Chat provides developers and researchers with an efficient and flexible solution for digital human interactions.

Key Features of Open Avatar Chat

• Low-latency Real-time Dialogue: The system enables low-latency interactions, with an average response delay of around 2.2 seconds, ensuring a smooth conversational experience.

• Multimodal Interaction: Supports a variety of interaction modes such as text, audio, and video, offering a rich user experience.

• Modular Design: Built on a modular architecture, allowing users to replace components like ASR (Automatic Speech Recognition), LLM (Large Language Model), and TTS (Text-to-Speech) according to their specific needs.

• Multiple Preset Modes: Offers various preset configurations, supporting both local models and cloud-based APIs.

• Digital Avatar Support: Integrates multiple digital avatar technologies such as LiteAvatar and LAM (Live Avatar Modeling), with support for both 2D and 3D avatar rendering.

Technical Principles of Open Avatar Chat

• Automatic Speech Recognition (ASR): Converts users’ spoken input into text using open-source or cloud-based ASR technologies, serving as input for further processing.

• Language Model (LLM): One of the core components, supporting multimodal models or cloud-based APIs to understand user input and generate appropriate responses.

• Text-to-Speech (TTS): Converts the text output of the language model into speech, supporting both local and cloud-based TTS systems for natural and fluent voice interaction.

• Digital Avatar Rendering: Uses 2D and 3D avatar technologies to display animated facial expressions and gestures driven by voice input in real time, enhancing the immersive experience.

• Modular Architecture: Each functional module (ASR, LLM, TTS, avatar rendering) is independently configurable and replaceable, enabling users to build customized system pipelines.

• Real-time Communication (RTC): Utilizes technologies like WebRTC for real-time audio and video transmission, ensuring a low-latency user experience.

Project Links

• GitHub Repository: https://github.com/HumanAIGC-Engineering/OpenAvatarChat

• Online Demo: https://huggingface.co/spaces/HumanAIGC-Engineering-Team/open-avatar-chat

Application Scenarios of Open Avatar Chat

• Customer Service: Acts as a virtual agent providing 24/7 real-time support via voice, text, or video.

• Education & Training: Serves as a virtual teacher or assistant, delivering personalized learning experiences and enhancing engagement.

• Entertainment & Gaming: Functions as a virtual character or host in games and livestreams, boosting immersion and interactivity.

• Smart Home & IoT: Works as a voice control hub for smart devices, enabling natural language interactions to improve user experience.

• Enterprise Applications: Acts as a virtual assistant to help employees access information, schedule tasks, and communicate across languages, improving productivity.