Just some playing around with audio data.
Try ./gradlew runme.
So far:
- Shows raw audio capture data in the top graph.
- Shows strength of signal for frequencies in the bottom graph.
- Placeholder piano keyboard for showing which notes are being played.
Next steps:
- Add drop-down to choose a mixer (among those with input capabilities).
- For each note, calculate the set of frequencies to test.
- Display a mini-graph of those frequencies in the piano JFrame.
- Average the per-note scores to get overall signal strength for that note.
- Convert per-note signals to z-scores and find positive outliers, i.e. the notes being played.
- Detect chord patterns.
- Per note, see if the center-of-mass value is sharp or flat and by how much.
- Add a music staff and show notes being played in a scrolling fashion.
