3-8 Temporal masking examples: four sounds . . . . . . . . . . . . . 50
3-9 Perception of rhythm schematic . . . . . . . . . . . . . . . . . . . 51
3-10 Auditory spectrogram: noise, pure tone, sounds, and music . . . 52
3-11 Timbre and loudness representations on music . . . . . . . . . . . 53
3-12 Segmentation of a music example . . . . . . . . . . . . . . . . . . 55
3-13 Tatum tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
3-14 Beat tracking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
3-15 Chromagram schematic . . . . . . . . . . . . . . . . . . . . . . . 60
3-16 Chroma analysis example: four sounds . . . . . . . . . . . . . . . 61
3-17 Chromagram of a piano scale . . . . . . . . . . . . . . . . . . . . 62
3-18 Pitch-content analysis of a chord progression . . . . . . . . . . . 63
3-19 Musical metadata extraction . . . . . . . . . . . . . . . . . . . . 64
4-1 Similarities in the visual domain . . . . . . . . . . . . . . . . . . 66
4-2 3D representation of the hierarchical structure of timbre . . . . . 70
4-3 Dynamic time warping schematic . . . . . . . . . . . . . . . . . . 71
4-4 Weight function for timbre similarity of sound segments . . . . . 72
4-5 Chord progression score . . . . . . . . . . . . . . . . . . . . . . . 73
4-6 Timbre vs. pitch analysis . . . . . . . . . . . . . . . . . . . . . . 74
4-7 Hierarchical self-similarity matrices of timbre . . . . . . . . . . . 75
4-8 Pattern length analysis . . . . . . . . . . . . . . . . . . . . . . . . 76
4-9 Heuristic analysis of downbeat: simple example . . . . . . . . . . 78
4-10 Heuristic analysis of downbeat: real-world example . . . . . . . . 78
18 Figures