Audio Playground
A full-featured cross-platform audio application showcasing the capabilities of my @siteed/expo-audio-studio library with real-time audio processing, visualization, and analysis.
Why?
I built this application to demonstrate the full potential of my audio processing libraries and to provide a real-world example of how they can be used. It also serves as a testing ground for new features and a reference implementation for developers using my libraries.
Preview
Audio Playground running on web, iOS, and Android platforms.
Key Features
- Real-time Audio Visualization: Interactive waveforms and spectrograms that update in real-time
- Feature Extraction Demo: Extract and visualize audio features like MFCC, chromagram, and spectral data
- Audio Transcription: Convert recorded audio to text using advanced speech recognition
- Interactive Controls: Intuitive UI for recording, playback, and audio manipulation
- Mel Spectrogram Visualization: Visual representation of audio frequency content for analysis
- Audio Trimming Demo: Interactive interface for precision audio editing
- Cross-Platform: Fully functional on iOS, Android, and web with the same codebase
Tech Stack
- React Native & Expo: Core framework for cross-platform development
- @siteed/expo-audio-studio: My library for audio processing and analysis
- @siteed/expo-audio-ui: My UI component library for audio applications
- React Native Reanimated: For smooth animations and interactions
- React Native Skia: For high-performance graphics rendering
UI Components Showcase
The playground demonstrates all the components from my @siteed/expo-audio-ui package:
- AudioVisualizer: Customizable component for visualizing audio waveforms
- DecibelGauge & DecibelMeter: Components for displaying audio levels
- RecordButton: Animated button for audio recording with visual feedback
- Waveform: Lightweight component for rendering audio waveforms
- AudioTimeRangeSelector: Component for selecting time ranges within audio files
Tech Challenges
Building a cross-platform audio application with this level of functionality wasn't easy:
- Optimizing performance for real-time audio visualization on mobile devices
- Creating a consistent UI/UX across web, iOS, and Android
- Implementing complex audio processing algorithms that work efficiently on all platforms
- Designing an intuitive interface for complex audio operations
- Ensuring smooth animations and interactions while processing audio in real-time
Current Status
The Audio Playground is currently being published to the App Store and Google Play Store. It's also available as a web application that you can try right now.