Echo in action - Real-time voice interaction demo
Overview
Echo is a sophisticated iOS voice assistant that demonstrates the seamless integration of modern AI technologies for natural, real-time conversations. Built with Swift and powered by cutting-edge AI models, Echo provides an intuitive voice interaction experience that feels both responsive and intelligent.
Key Features
🎙️ Real-time Voice Recognition
Utilizes Apple's native Speech Recognition framework for accurate, on-device speech-to-text conversion with automatic silence detection.
🤖 Intelligent Conversations
Powered by GPT-4 OSS 20B model for contextual, natural language responses that understand context and provide meaningful interactions.
🔊 High-Quality Voice Synthesis
Features Kokoro-TTS for expressive, human-like speech generation with customizable voices and speed for natural-sounding responses.
🔒 Privacy-First Architecture
Both the LLM model and TTS API are self-hosted, ensuring complete privacy. Echo can work entirely offline without sending any data to the internet, keeping conversations completely private and secure.
⚡ Streaming Audio Architecture
Advanced real-time audio streaming system that provides immediate response playback as content is generated, ensuring responsive interaction.
How It Works
1. Listen: Tap to activate voice recognition with visual feedback
2. Process: Your speech is transcribed using Apple's Speech Recognition
3. Generate: The GPT-4 model creates contextual responses in real-time
4. Synthesize: Kokoro-TTS converts text to natural-sounding speech
5. Stream: Audio plays immediately as it's generated for responsive interaction