EchoMate - Voice Assistant Web Application

EchoMate is a web application that enables speech-to-speech conversations using Moonshine for speech recognition, Kokoro for text-to-speech synthesis, and Silero-VAD for voice activity detection. The app features a tabbed interface for conversation, settings, and credits.

Two Versions of this app

There are two versions of this app. One is pure client side but you need a PC with a very good graphics card and a browser that supports WebGPU. The other does most of the work on the server side using Python so that you can use a very simple browser like on a mobile phone.

pure client side version
server side version

This project is the pure client side version.

Warning

• This project it pure client side and depends heavily on WebGPU support in the browser and is only tested with Chrome !!!!!
• I also have a version that does everything on the server side (Python) except for VAD here:
• EchoMate_ServerSide
• Optionally you can use a local LLM server like llama.cpp in the settings.

Features

• Real-time voice activity detection (VAD)
• Speech-to-text (STT) using Moonshine
• Text-to-speech (TTS) synthesis with Kokoro
• Configurable server endpoint, system prompt, and voice selection
• Modern, responsive web UI

Usage

• You should be able to just talk.
• Use the Settings tab to configure the chat server URL, system prompt, and select a TTS voice.
• View open source credits in the Credits tab.

Credits

• Silero-VAD - Voice activity detection
• vad (ricky0123) - Browser VAD implementation
• Moonshine - Speech recognition
• Kokoro - Text-to-speech synthesis
• Transformers.js - Machine learning library for running Transformers models in the browser
• SmolLM2-1.7B-Instruct - Language model by Hugging Face for instruction-following tasks

License

LICENSE for Me and Kokoro. MOONSHINE_LICENSE for Moonshine STT. SILERO_LICENSE for Silero VAD.