Custom Audio App 🎵

A professional web-based audio application built with React and Tone.js for interactive music creation and sample manipulation

✨ Features

• 🎼 Sample Playback System - Load and play MP3 files up to 90 seconds
• 🎛️ 3-Band EQ - Real-time frequency control (Low/Mid/High)
• 🎹 Built-in Synthesizer - Multiple waveforms with ADSR envelope
• 🔊 Master Volume Control - Global audio level management
• 📱 Responsive Design - Works on desktop, tablet, and mobile
• ⚡ Sample-Accurate Timing - Professional-grade audio precision

🏗️ Built With

• React - Modern UI framework
• Tone.js - Web Audio framework for music applications
• Web Audio API - Low-level audio processing
• Modern CSS - Responsive design with dark theme

🎵 Audio Architecture

┌─────────────────┐    ┌─────────────┐    ┌─────────────┐    ┌─────────────┐
│  Sample Player  │───▶│   3-Band    │───▶│   Master    │───▶│  Speakers   │
│   (Tone.Player) │    │EQ (Tone.EQ3)│    │Volume (Tone │    │             │
└─────────────────┘    └─────────────┘    │   .Volume)  │    └─────────────┘
                                          └─────────────┘
┌─────────────────┐                              ▲
│  Synthesizer    │──────────────────────────────┘
│  (Tone.Synth)   │
└─────────────────┘

🛠️ Development

Available Scripts

npm start          # Start development server
npm run build      # Build for production
npm test           # Run test suite
npm run deploy     # Deploy to production

Project Structure

src/
├── components/
│   ├── AudioEngine.js      # Core audio processing
│   ├── SamplePlayer.js     # Sample playback controls
│   ├── EQProcessor.js      # 3-band equalizer
│   ├── Synthesizer.js      # Synth engine
│   └── MasterControls.js   # Global controls
├── hooks/
│   ├── useAudioContext.js  # Audio context management
│   └── useToneEngine.js    # Tone.js integration
├── utils/
│   └── audioHelpers.js     # Audio utility functions
└── App.js                  # Main application

🎮 Usage

Basic Sample Playback

1. Click "Load Sample" to upload an MP3 file
2. Use play/pause controls for playback
3. Adjust master volume as needed

EQ Processing

• Low: Adjust bass frequencies (20Hz - 250Hz)
• Mid: Control midrange (250Hz - 4kHz)
• High: Modify treble (4kHz - 20kHz)

Synthesizer

• Choose waveform type (sine, square, triangle, sawtooth)
• Play notes using the virtual keyboard
• Adjust synth volume independently

📊 Technical Specifications

Feature	Specification
Sample Length	Up to 90 seconds
Audio Library Size	Under 100MB total
Supported Formats	MP3, WAV, OGG
Browser Support	Chrome, Firefox, Safari, Edge
Audio Latency	<10ms (hardware dependent)
Sample Rate	44.1kHz standard

🌐 Browser Compatibility

Browser	Support	Notes
Chrome	✅ Full	Recommended for development
Firefox	✅ Full	Good performance
Safari	✅ Full	iOS compatible
Edge	✅ Full	Windows compatible

Note: Requires user interaction to start audio context (browser security requirement)

📱 Mobile Support

• Touch-friendly controls
• Responsive layout
• Optimized for mobile browsers
• Works on iOS and Android

🔧 Configuration

Audio Settings

// Customize audio settings in src/config/audio.js
export const AUDIO_CONFIG = {
  sampleRate: 44100,
  bufferSize: 512,
  maxSampleLength: 90, // seconds
  maxLibrarySize: 100 // MB
};

UI Customization

// Modify theme in src/styles/theme.js
export const theme = {
  colors: {
    primary: '#4CAF50',
    background: '#1a1a1a',
    surface: '#2a2a2a'
  }
};

🚧 Roadmap

✅ Completed

• Basic sample playback system
• 3-band EQ implementation
• Synthesizer with multiple waveforms
• Master volume control
• Responsive UI design

🔄 In Progress

• Waveform visualization
• Performance optimization
• Unit test coverage

🎯 Planned Features

• Advanced synthesis (FM, AM, filters)
• Multi-sample sequencer
• Recording/export capabilities
• MIDI controller support
• Cloud sample library
• Collaboration features

🤝 Contributing

We welcome contributions! Please see our Contributing Guide for details.

Development Setup

1. Fork the repository
2. Create a feature branch: git checkout -b feature/amazing-feature
3. Commit changes: git commit -m 'Add amazing feature'
4. Push to branch: git push origin feature/amazing-feature
5. Open a Pull Request

📄 License

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

🙏 Acknowledgments

• Tone.js - Web Audio framework
• Web Audio API - Browser audio capabilities
• React - UI framework
• Audio samples from Freesound.org

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Built with ❤️ for the web audio community