Project Overview
This intelligent personal AI assistant was developed for a client with ALS to assist with communication challenges. The system features two distinct interaction modes: voice-first conversations with real-time speech processing, and LLM-powered chat with context-aware responses. Built for the Scott-Morgan Foundation, this project demonstrates how advanced AI integration can create meaningful impact for individuals with accessibility needs.
Key Features
🎤
Real-time Voice Processing
Live audio recording, speech recognition, and text-to-speech synthesis with automatic language detection
🧠
Multi-Model AI Integration
Supports both OpenAI GPT-4 and Groq's Llama models with intelligent model selection and switching
📚
Intelligent Document Retrieval
RAG (Retrieval-Augmented Generation) system with vector embeddings and semantic search capabilities
🌐
Multi-language Support
Automatic language detection and translation capabilities for global accessibility
⚡
Parallel Processing
Optimized pipeline for handling multiple concurrent operations and real-time communication
💾
Persistent Memory
Chat history and context preservation across sessions with intelligent context management
Technical Implementation
The system is built with a modular architecture that separates concerns into dedicated classes for audio processing, embeddings management, and pipeline orchestration. The backend uses Flask with WebSocket support for real-time bidirectional communication, while the frontend features a modern responsive design.
Backend Architecture:
- Flask Application: RESTful API with WebSocket endpoints for real-time communication
- Audio Processing: PyAudio for live recording, SpeechRecognition for transcription, PyDub for audio manipulation
- AI Integration: OpenAI API for GPT-4, Groq API for Llama models, LangChain for orchestration
- Vector Database: FAISS for efficient similarity search and document retrieval
- Document Processing: PDF parsing, text chunking, and embedding generation using sentence transformers
Advanced Features:
- Async Processing: Concurrent handling of audio recording, transcription, and AI inference
- Vector Search: Semantic document retrieval using sentence transformers and FAISS indexing
- Real-time Communication: WebSocket-based bidirectional communication with error handling
- Error Handling: Robust exception handling and graceful degradation for production use
- Scalable Design: Modular architecture supporting easy extension and maintenance
Impact & Results
Bernard represents a significant advancement in personal AI assistants, combining cutting-edge language models with practical real-world applications. The system demonstrates expertise in full-stack AI development, real-time audio processing, and modern web application architecture.
Key achievements include successful integration of multiple AI service providers, implementation of a production-ready RAG system, and creation of an intuitive user interface that makes advanced AI capabilities accessible to end users. The project showcases the ability to work with cutting-edge technologies while maintaining code quality and system reliability.