Voice Chat Application

A simple real-time voice chat application built with Flask and WebSocket that allows two users to communicate via voice.

Features

• Real-time voice communication
• Simple and intuitive interface
• WebSocket-based audio streaming
• Low latency audio processing

Local Setup

1. Clone the repository:

git clone <your-repo-url>
cd voice-chat

2. Create and activate a virtual environment:

python -m venv venv
source venv/bin/activate  # On Windows: venv\Scripts\activate

3. Install dependencies:

pip install -r requirements.txt

4. Run the application:

python app.py

5. Open your browser and navigate to http://localhost:5000

Deployment to Render

1. Push your code to GitHub

2. Go to Render.com and:

   • Sign up for a free account
   • Click "New +" and select "Web Service"
   • Connect your GitHub repository
   • Use these settings:
     • Name: voice-chat
     • Environment: Python
     • Build Command: pip install -r requirements.txt
     • Start Command: python app.py
   • Click "Create Web Service"

3. Wait for deployment to complete

Usage

1. Open the application in two different browser windows
2. Click "Start Chat" in both windows
3. Allow microphone access when prompted
4. Start speaking - the other user will hear you in real-time
5. Click "Stop Chat" when done

Technical Details

• Built with Flask and Flask-SocketIO
• Uses Web Audio API for real-time audio processing
• WebSocket for low-latency communication
• Base64 encoding for audio data transmission

Notes

• The free tier of Render will spin down after 15 minutes of inactivity
• First request after inactivity might take 30-60 seconds
• 750 free hours per month included in free tier