Harmonic Intervals Audio Dataset

This dataset contains 8,236 WAV recordings of harmonic intervals for music information retrieval and machine learning research. Harmonic intervals are pairs of notes played simultaneously, representing the distance between two pitches. The dataset is split into two subsets: recorded-dataset — recorded acoustic samples synthetic-dataset — generated/synthesized samples across multiple instruments The dataset is organized in the following hierarchical structure: harmonic-intervals-audio-dataset/ ├── recorded-dataset/ │ ├── MF/ │ │ └── <interval>/ │ │ ├── forte/ │ │ └── piano/ │ ├── NF/ │ │ └── <interval>/ │ │ ├── forte/ │ │ └── piano/ │ └── dataset_summary.json └── synthetic-dataset/ ├── audio/ │ └── <instrument>/ │ └── <interval>/ └── dataset_summary.json Both subsets use 12 interval classes. Intervals are named by their size (2nd, 3rd, 4th, etc.) and quality (major, minor, perfect): major_2nd — Major second (2 semitones) major_3rd — Major third (4 semitones) major_6th — Major sixth (9 semitones) major_7th — Major seventh (11 semitones) minor_2nd — Minor second (1 semitone) minor_3rd — Minor third (3 semitones) minor_6th — Minor sixth (8 semitones) minor_7th — Minor seventh (10 semitones) perfect_4th — Perfect fourth (5 semitones) perfect_5th — Perfect fifth (7 semitones) perfect_8th — Perfect octave (12 semitones) tritone — Tritone (augmented fourth/diminished fifth, 6 semitones) Statistics: Total files: 8,236 WAV files Recorded subset: 4,288 files Synthetic subset: 3,948 files Duration: 2 seconds per file Format: WAV Channels: Mono Bit depth: 16-bit