def bass_note_tendency_score(candidate, beat):
this_chord = chords.get(beat.start())
score = 0.0
candidate_is_this_chord_bass_note = pitches.same_species(candidate, this_chord.bass_note)
# first bass note should definitely be the root
if beat.start() == 0 and candidate_is_this_chord_bass_note:
return vars.FIRST_BEAT_BASS_ROOT
# If beat one, we want to hear the bass note
if beat.first_beat() and candidate_is_this_chord_bass_note:
score += vars.FIRST_BEAT_BASS_NOTE
last_chord = chords.get(0 if beat.start() == 0 else beat.previous().start())
this_and_next_chord_are_same = chords.same(last_chord, this_chord)
this_chord_root_in_bass = this_chord.root_in_bass()
# Chord is the same as the last chord, and this is root note. Less important as root was likely
# already established
if this_and_next_chord_are_same and candidate_is_this_chord_bass_note and this_chord_root_in_bass:
score += vars.BASS_ROOT_SAME_CHORD
# Bass note does not equal root note, therefore it is especially important
if pitches.same_species(candidate, this_chord.bass_note) and not this_chord_root_in_bass:
score += vars.NON_ROOT_BASS_NOTE
# new chord, we definitely want to hear the bass_note
if not this_and_next_chord_are_same and candidate_is_this_chord_bass_note:
score += vars.BASS_NOTE_NEW_CHORD
return score
def __eq__(self, other):
if not isinstance(other, self.__class__):
return False
elif isinstance(other, chords.Chord):
return chords.same(other.root_chord, self.root_chord)
return False
def __get_musicality(self):
score = 0.0
this_chord = config.chord_progression[self.position]
next_chord = config.chord_progression[self.position +
config.resolution]
score += vars.HALF_NEIGHBOR_SAME_CHORD if chords.same(this_chord, next_chord) \
else vars.HALF_NEIGHBOR_DEFAULT_MUSICALITY
score += vars.FLICKER_COEF if self.causes_flickering() else 0.0
return score
def __get_musicality(self):
score = 0.0
this_chord = config.chord_progression[self.position]
next_chord = config.chord_progression[self.position +
config.resolution]
score += vars.ARPEGGIAL_SAME_CHORD if chords.same(this_chord, next_chord) \
else vars.ARPEGGIAL_NEW_CHORD
score += vars.FLICKER_COEF if self.causes_flickering() else 0.0
return score