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Realtime Audio Chatbot with 3D Avatar Integration

apptension.com

Advertising & marketing

Information technology

eCommerce

Challenges in Realtime Audio Avatar Implementation

Existing chatbot solutions fail to deliver humanlike response latency (under 1.5s perceived delay) for audio conversations, lack seamless audio streaming integration between frontend and backend systems, and cannot synchronize 3D avatar animations with speech output in real-time, resulting in unnatural user interactions.

About the Client

A leading brand experience agency specializing in creating immersive digital interactions for consumer product brands

Key Development Goals

Achieve humanlike response latency through optimized streaming architecture
Implement bidirectional audio streaming with format conversion between browser and backend
Integrate 3D avatar animations synchronized with speech output
Establish secure authentication for controlled access to the conversational AI

Core System Capabilities

Realtime Speech-to-Text transcription with <1s delay
Context-aware filler response generation during processing
Text-to-Speech synthesis with <0.5s streaming delay
3D avatar animation synchronization with speech patterns
Browser-based audio capture and streaming
Secure user authentication mechanism

Technology Stack

Next.js

WebRTC

Anthropic Claude Haiku

Google Text-to-Speech

ElevenLabs

Vercel

AWS

System Integrations

Speech-to-Text API integration
Language model streaming interface
Text-to-Speech synthesis API
3D avatar rendering engine
WebRTC signaling server

Performance Requirements

Scalable architecture for concurrent user sessions
End-to-end latency under 1.5s perceived response time
99.9% system availability
Secure audio data transmission
Cross-browser compatibility (Chrome/Safari/Firefox)

Expected Business Outcomes

Enables brands to deliver immersive, humanlike customer service experiences through websites, reducing perceived wait times by 60% while maintaining conversational context. The solution provides measurable improvements in user engagement metrics and brand perception scores through natural audio interactions with synchronized visual avatars.