GD-APP: AI-Powered Group Discussion & Placement Simulator

A full-stack, real-time web application designed to simulate placement interviews, group discussions (GD), and feedback sessions using AI-driven speech analysis. GD-APP helps students improve communication, participation, and clarity through live transcription, automated analytics, and personalized insights.

🚀 Overview

• GD-APP enables users to:
• Join real-time group discussions
• Speak using microphone (WebRTC / Browser Audio Capture)
• Get live speech-to-text (STT) using AssemblyAI
• Receive an automatic communication analysis report
• View charts for contribution and speaking patterns
• Improve through targeted feedback based on performance
• It acts as a virtual placement-training companion.

🎯 Goals

• Provide objective, AI-driven feedback for GD preparation
• Measure speaking time, participation rate, and clarity
• Enable students to practice confidently before placements
• Allow institutions to conduct GD simulation sessions online

🌟 Benefits

✔ For Students Real GD practice anytime Instant feedback Accurate STT transcripts Clear improvement metrics

✔ For Colleges/Institutions Conduct GD sessions online Automated analytics No manual evaluation needed

✔ For Developers Modular architecture Scalable backend Clean React frontend Easy to deploy (Netlify + Render/Vercel)

🏗 Tech Stack

Backend (/server)

server/
├── controllers/
│   └── roomController.js
├── models/
│   └── Room.js
├── routes/
│   ├── analysisRoutes.js
│   └── roomRoutes.js
├── services/
├── socket/
│   └── roomSocket.js
├── uploads/
├── utils/
│   └── dbConnect.js
├── socketHandler.js
├── index.js
├── package.json
├── .env

Frontend (/client)

client/
├── public/
├── src/
│   ├── assets/
│   ├── components/
│   │   ├── AnalysisReport.jsx
│   │   ├── ContributionPie.jsx
│   │   ├── Controls.jsx
│   │   ├── HomePage.jsx
│   │   ├── JoinRoom.jsx
│   │   ├── UserList.jsx
│   │   └── VideoTile.jsx
│   ├── pages/
│   │   ├── Room.jsx
│   │   └── RoomDashboard.jsx
│   ├── utils/
│   │   └── socket.js
│   ├── App.jsx
│   ├── main.jsx
│   └── index.css
├── package.json
├── .env

⚙ Setup Instructions (Local Development)

Follow these steps to run the project locally.

1️⃣ Clone the Repository

git clone https://github.com/yourusername/GD-APP.git
cd GD-APP

2️⃣ Backend Setup

cd server
npm install

Create .env

MONGO_URI=your_mongo_url
ASSEMBLYAI_API_KEY=your_key
PORT=5000

Start Backend

npm start

3️⃣ Frontend Setup

cd client
npm install

Create .env

VITE_BACKEND_URL=http://localhost:5000

Start Frontend

npm run dev