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Audio Tools for Music Discovery by Dr. Michael Casey: Recurring Themes and Leitmotifs

Explore Dr. Michael Casey's tools for music discovery, including finding recurring themes, musical quotations, chord progressions, and leitmotifs. Discover how to match and mashup songs, transpose, change tempo, and identify leitmotif nature through chord progressions. Utilize the MP7C Audio Feature Extractor for theme retrieval and compare efficiency with Kd-Tree and LSH methods. Delve into the comparison of Matched Filter and Dynamic Time Warping for music analysis.

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Audio Tools for Music Discovery by Dr. Michael Casey: Recurring Themes and Leitmotifs

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Presentation Transcript

  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 Efficiency:Kd-Tree vs. LSH

  15. Comparison of MF and DTW

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