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	音楽における調和解析	Musical Key Detection
分野	音楽情報検索	音楽情報検索
系統	Machine learning	Machine learning
提唱年	2002	2006
提唱者	Bryan Pardo	Emilia Gómez
種類	Harmonic function and progression analysis	Tonal center estimation
原典	Pardo, B., & Birmingham, W. P. (2002). Algorithms for chordal analysis. Computer Music Journal, 26(4), 27-49.	Gómez, E. (2006). Tonal description of polyphonic audio for music content processing. In INESC Porto PhD Thesis.
別名	functional harmony analysis, harmonic progression detection, tonal function estimation	key recognition, tonality estimation, musical center detection
関連	5	5
概要	Harmonic analysis is the computational study of chord progressions, harmonic function, and tonal relationships in music. Formalized for audio by Pardo and Birmingham (2002), it goes beyond simple chord identification to interpret harmonic role and structure. Harmonic analysis is essential for music theory education, compositional understanding, and music generation systems. It requires understanding both the chords themselves and their functional relationships within a tonal context.	Musical key detection is the task of automatically determining the key (tonal center) and scale mode of a musical composition from its audio. Introduced formally by Gómez (2006), it is essential for music analysis, transposition, harmonic understanding, and music theory education. The key defines the tonal center around which a piece gravitates; identifying it enables deeper structural understanding. Key detection is closely related to chord recognition but operates at a higher level of abstraction.