BirdMIDI 🐦🎶

BirdMIDI is a modern Android application that transcribes birdsong into editable MIDI data in real-time. It uses the robust YIN Pitch Detection Algorithm combined with a high-fidelity 48kHz audio capture pipeline to track the high-frequency fundamentals of complex birdsong (up to 12kHz).

Features

• Real-Time Pitch Tracking: Ultra-low latency analysis using a pure-Kotlin YIN algorithm.
• High-Frequency Capture: 48kHz/16kHz "Scaling Trick" specifically optimized for birdsong.
• MIDI Export: Save your transcriptions as standard .mid files for use in any DAW.
• Adjustable Resolution: Scale your transcriptions up to 8 bars (128 steps) for rhythmic precision.
• Visual Diagnostics: Real-time waveform visualization and technical diagnostics (Hz, Confidence, Rate).

Technical Details

• Engine: YIN Algorithm (Model-free, mathematical pitch estimation).
• Core: Jetpack Compose UI with Kotlin Coroutines for asynchronous audio processing.
• Audio Source: MediaRecorder.AudioSource.CAMCORDER for directional hardware capture.
• Sample Rate: 48,000Hz internal processing.

Getting Started

1. Clone the repository.
2. Open in Android Studio (Iguana or later).
3. Build and run on a physical Android device (Pixel recommended).

License

MIT