Audio Tools for Music Discovery

1
Audio Tools for Music Discovery

• Dr. Michael Casey
• Goldsmiths College
• Centre for Cognition Computation Culture

2
Music Discovery

• Find recurring themes / progressions
• Musical quotation
• Chord progression
• Leitmotif

3
Quotation / Sampling
4
Auto Mashups

• Similar?

Madonna, Borderline
Abba, Dancing Queen
Abba, Dancing Queen Transpose Tempo change
Mashup
Matching with Transpose Tempo change
5
Leitmotif
Nature
6
Leitmotif
Nature
Nature2
7
Leitmotif theme as chord progression
Nature
Rhinen
8
Chroma Sequence
9
MP7C Audio Feature Extractor
Constant-Q Power Spectrum
DCT / CHROMA
LFCC / CHROMA
10
Matched Filter
11
Matched Filter
12
Repeated Theme Retrieval
13
Retrieval Performance
14
Retrieval EfficiencyKd-Tree vs. LSH
15
Comparison of MF and DTW