harmony-analyser.org Java Library and Tools for Chordal Analysis - - PowerPoint PPT Presentation

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harmony analyser org java library and tools for chordal

harmony-analyser.org Java Library and Tools for Chordal Analysis - - PowerPoint PPT Presentation

Aug 25, 2022 332 likes •523 views

harmony-analyser.org Java Library and Tools for Chordal Analysis Ladislav Mark Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic 2016 Joint WOCMAT IRCAM Forum Conference, 16th December 2016, Kainan

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harmony-analyser.org Java Library and Tools for Chordal Analysis

Ladislav Maršík Faculty of Mathematics and Physics, Charles University, Prague, Czech Republic

2016 Joint WOCMAT – IRCAM Forum Conference, 16th December 2016, Kainan University, Taiwan

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What is this library about?

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

 Music Analysis  Tonal Harmony / Western music – but likely to extend  Chord Distances (Musicology, music cognition)

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 New descriptors for MIR (e.g. cover song identification)  New visualizations for music  Gap between Musicology and MIR

Motivation (why to research chord distances?)

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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harmony-analyser.org

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Tools: Chord Transition Tool

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Tools: Chord Transition Tool

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Tools: Audio Analysis Tool

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Tools: Visualization Tool

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Chord Distances

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

 Tonal Pitch Space (Fred Lerdahl)

TPS of C major chord in a C major key

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Chord Distances

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

 Our novel concept: Chord Complexity Distance

(a variation of Edit Distance)

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Experimental: Chroma Distances

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016



Idea: If chord distances work, why chroma distances shouldn‘t Chord distance

Chroma distances

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Experimental: Chroma Distances

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Demo

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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JHarmonyAnalyser

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

Basic model of tones, chords, keys, …
Implementation of chord distance models

(Tonal Pitch Space, Chord Complexity, …)

Experimental chroma distances
Extensible plugins

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Conclusion and Future work

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

 harmony-analyser.org = Java library and ready-made

tools

 New Chord Complexity distance concept  Chroma distances  Future work: Chew model, Maven repository

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Thank you for your attention

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016

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Additional Information: Model of harmonic complexity

 Similar to formal grammars  Basic harmonic function = start sentential form  2 rules applicable on sentential form:  ADD – adds a new tone  ALTER – alters the tone  Example:

Ladislav Maršík – harmony-analyser.org – Java Library and Tools for Chordal Analysis WOCMAT 2016