Phone Speaker & Mic App

Turn your Android phone into a wireless microphone and speaker for your PC!

🎯 What This Does

• Phone Mic → PC Speakers: Your phone's microphone sends audio to your PC speakers
• PC Mic → Phone Speakers: Your PC's microphone sends audio to your phone speakers
• Works over WiFi (wireless connection)
• Low latency audio streaming
• Simple interface

📋 Requirements

For Android App

• Android phone (Android 5.0 or higher)
• Android Studio to build the app
• Microphone permission

For PC Server

• Python 3.7 or higher
• Windows, Mac, or Linux
• Phone and PC on the same WiFi network

🚀 Setup Instructions

Part 1: Install PC Server

1. Install Python (if not already installed):

   • Download from https://www.python.org/downloads/
   • During installation, check "Add Python to PATH"

2. Install required library:

   pip install pyaudio

If pyaudio fails to install:

• Windows: Download wheel file from https://www.lfd.uci.edu/~gohlke/pythonlibs/#pyaudio
• Mac: brew install portaudio, then pip install pyaudio
• Linux: sudo apt-get install portaudio19-dev, then pip install pyaudio

1. Run the server:

   python pc_server.py

1. Note your PC's IP address - the server will display it. Example: 192.168.1.100

Part 2: Build and Install Android App

1. Open Android Studio

   • Download from https://developer.android.com/studio if needed

2. Open the project:

   • File → Open → Select the PhoneSpeakerMic folder

3. Wait for Gradle sync to complete

4. Connect your Android phone:

   • Enable Developer Options on your phone (tap Build Number 7 times in Settings → About)
   • Enable USB Debugging
   • Connect via USB cable

5. Build and install:

   • Click the green "Run" button (▶️) in Android Studio
   • Or use: ./gradlew installDebug

Part 3: Connect and Use

1. Make sure phone and PC are on the same WiFi network

2. On PC: Run python pc_server.py

   • Note the IP address displayed

3. On Phone:

   • Open the "Phone Speaker Mic" app
   • Enter your PC's IP address (e.g., 192.168.1.100)
   • Tap "Connect to PC"
   • Grant microphone permission when prompted

4. You're connected!

   • Speak into your phone → sound comes out PC speakers
   • Speak into PC mic → sound comes out phone speakers

🛠️ Troubleshooting

Can't connect?

• ✅ Ensure both devices are on the same WiFi network
• ✅ Check firewall settings (allow port 5000)
• ✅ Verify IP address is correct
• ✅ Make sure PC server is running before connecting

No audio?

• ✅ Check volume on both devices
• ✅ Grant microphone permission on phone
• ✅ Check PC audio settings (correct input/output devices)

Poor audio quality?

• ✅ Move closer to WiFi router
• ✅ Close other network-intensive applications
• ✅ Ensure stable WiFi connection

Firewall Issues (Windows)?

If connection fails, allow Python through firewall:

1. Windows Security → Firewall & network protection
2. Allow an app through firewall
3. Find Python and check both Private and Public
4. Or run: python -m http.server 5000 to test if port is blocked

📱 How to Use After Setup

Every time you want to use it:

1. On PC: Open terminal/command prompt and run:

   python pc_server.py

1. On Phone: Open the app and connect using your PC's IP

2. Keep both running - you can now use your phone as PC audio!

⚙️ Technical Details

• Protocol: TCP socket connection
• Port: 5000
• Audio Format: PCM 16-bit, 44.1kHz, Mono
• Latency: ~100-200ms depending on network

🔧 Advanced: Build APK File

To create an installable APK without Android Studio:

cd PhoneSpeakerMic
./gradlew assembleDebug

The APK will be in: app/build/outputs/apk/debug/app-debug.apk

Transfer this file to your phone and install it.

📝 Notes

• Keep the app running in foreground for best performance
• Battery usage is moderate during active streaming
• Works great for video calls, gaming, or any PC audio needs
• Latency is good for most uses but not ideal for music production

🐛 Known Issues

• May disconnect if phone screen locks (keep screen on during use)
• Some Android devices may have audio sync issues
• First connection might take a few seconds

💡 Tips

• Use a phone stand to keep your phone positioned as a microphone
• Adjust PC/phone volume for best quality
• Test connection before important calls
• Keep phone plugged in for extended use

🆘 Getting Help

If you encounter issues:

1. Check the troubleshooting section above
2. Verify all requirements are met
3. Try restarting both the app and server
4. Check your network connection

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

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Enjoy using your phone as a PC microphone and speaker! 🎤🔊