ConvoAI – AI Voice Call Assistant
ConvoAI is a state-of-the-art voice assistant designed specifically for Android. It bridges the gap between traditional telephony and modern AI by using OpenAI's Whisper model to transcribe calls in real-time, allowing users to interact with their calls through voice commands and intelligent summaries.
Technology Stack
System Architecture
Speech Recognition
OpenAI Whisper (on-device optimization).
Mobile Framework
Kotlin-based Android application with background services.
AI Processing
Integration with LLMs for intent classification and summarization.
The Challenges
Managing audio stream latency for real-time transcription.
Balancing high-accuracy AI models with mobile battery life.
Ensuring privacy and security for sensitive call data.
The Solutions
Implemented a chunked audio processing buffer to stream data to Whisper without waiting for silence.
Used quantized model versions to reduce the computational load on the mobile CPU.
Enabled end-to-end encryption for all processed audio fragments.
Key Results & Metrics
Real-time speech-to-text
Low-latency intent detection
Battery-efficient processing