🎙️ Multilingual Voice Chat Room

A project built for Murf Coding Challenge 4

🚀 Project Overview

This project is a real-time group voice chat application where multiple users can join a virtual room and communicate with each other seamlessly — regardless of the language they speak.

The goal is to break language barriers by combining voice chat with translation technologies, making conversations fluid and accessible to everyone.

The app mimics the experience of a group call (like WhatsApp/Zoom) with essential features:

• Automatic joining into a voice call on entry.
• Controls for Mute / Unmute / Leave.
• Support for multiple users in a room.
• Real-time updates when users join or leave.

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📌 Features

✅ Real-time group voice calling
✅ Multilingual support (conceptual integration with Murf/translation APIs)
✅ Room-based architecture (create/join rooms)
✅ WebRTC-powered audio streaming
✅ Simple and clean frontend interface
✅ Backend with WebSocket signaling

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🏗️ Tech Stack

• Frontend: HTML, CSS, JavaScript (WebRTC for audio streaming)
• Backend: Python (FastAPI, aiohttp, WebSocket)
• Real-time Communication: WebRTC, aioice
• Dev Setup: Docker / Devcontainers (optional)

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📂 Repository Structure

MURF-Coding-Challenge-4-Multilingual-Voice-Chat-Room/
│── backend/         # Server-side code (room management, signaling, audio handling)
│── frontend/        # Web interface (UI for joining rooms, mute/unmute/leave)
│── .devcontainer/   # Dev environment configs
│── requirements.txt # Python dependencies
│── README.md        # Project documentation (this file)
│── .gitignore

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⚙️ Installation & Setup

1️⃣ Clone the Repository

git clone https://github.com/teche74/MURF-Coding-Challenge-4-Multilingual-Voice-Chat-Room.git
cd MURF-Coding-Challenge-4-Multilingual-Voice-Chat-Room

2️⃣ Setup Backend

cd backend
python -m venv venv
source venv/bin/activate   # On Windows: venv\Scripts\activate
pip install -r requirements.txt
uvicorn main:app --reload

3️⃣ Run Frontend

Open frontend/index.html in your browser (or serve via a simple HTTP server).

4️⃣ Join the Chat Room

• Open the frontend in multiple browser tabs or devices.
• Each user will auto-join the call.
• Use Mute/Unmute or Leave as needed.

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🎯 Future Improvements

• ✅ Fix mute/unmute/leave state syncing across clients.
• ✅ Improve audio routing (no echo, stable transmission).
• 🔲 Integrate real-time translation (speech-to-text + translation + text-to-speech).
• 🔲 Add UI improvements (participant list, speaking indicators).
• 🔲 Deploy to cloud (Heroku/Vercel + Render/EC2).

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🙌 Acknowledgements

This project was developed as part of Murf Coding Challenge 4.
Special thanks to the organizers for encouraging innovation in multilingual, voice-first experiences.