INNER CODE UNIT · Python

__is_approach_tone

jisungk/deepjazz · grammar.py:36

def __is_approach_tone(chord, note):
    # Method: see if note is +/- 1 a chord tone.

    for chordPitch in chord.pitches:
        stepUp = chordPitch.transpose(1)
        stepDown = chordPitch.transpose(-1)
        if (note.name == stepDown.name or 
            note.name == stepDown.getEnharmonic().name or
            note.name == stepUp.name or
            note.name == stepUp.getEnharmonic().name):
                return True
    return False

''' Helper function to determine if a note is a chord tone. '''
def __is_chord_tone(lastChord, note):
    return (note.name in (p.name for p in lastChord.pitches))

''' Helper function to generate a chord tone. '''

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