Module analysis

Expand description

Key-finding and compact analysis helpers.

Structs§

KeyProfile: A set of key-finding weights for the Krumhansl-Schmuckler algorithm.

estimate_key_from_chords: Estimates likely keys from chords using the Krumhansl-Schmuckler weights.
estimate_key_from_chords_with: Estimates likely keys from chords using the given weights.
estimate_key_from_pitches: Estimates likely keys from pitches using the Krumhansl-Schmuckler weights.
estimate_key_from_pitches_with: Estimates likely keys from pitches using the given weights.
tonal_certainty: How decisively the first of a ranked list of key estimates wins: music21’s Key.tonalCertainty for a key that came out of analysis. It is the leader’s score plus twice its lead over the next positive score; with no positive runner-up it is the leader’s score, floored at zero.
tonal_certainty_from_scores: The same measure over the scores alone, for a ranking that came from somewhere else — music21 hands its own analysis results around as keys carrying a correlationCoefficient rather than as estimates.