def _append_octave(self, xpose: int = 0) -> list:
tmp = transpose(list(self.template), xpose)
if self.ascending:
tmp.append(transpose(tmp[0], 12))
else:
tmp.append(transpose(tmp[0], -12))
return tmp
def transpose(self, steps: int) -> list:
"""
Transposes other key numbers.
:param steps: Size of transposition.
:return: List of keynumbers.
"""
return transpose(self.template, steps)
def transposed(self, steps: int, new_name=None) -> "Scale":
"""
Produces transposed copy of scale template.
:param steps:
:param new_name:
:return:
"""
s = Scale(new_name or self.name, transpose(self.template, steps))
return s
def _find_chords(self, *_):
user_pattern = self._validate_user_chord(
self._ui.line_edit_user_chord.text())
if user_pattern:
root = user_pattern[0]
root_pc = pitchclass(root)
root_octave = octave(root)
if root_octave > 0:
user_pattern = transpose(user_pattern, -12 * root_octave)
root = root_pc
user_chord = Chord("User", user_pattern)
mode = self.chord_match_mode
if mode == ChordMatchMode.SUB:
self._ui.dspin_threshold.setEnabled(False)
self._find_sub_chords(user_chord)
elif mode == ChordMatchMode.SUPER:
self._ui.dspin_threshold.setEnabled(False)
self._find_super_chords(user_chord)
else:
self._ui.dspin_threshold.setEnabled(True)
threshold = self._ui.dspin_threshold.value()
self._find_similar_chords(user_chord, threshold)
def update_ui(self, *_):
template = self.template
self._ui.line_edit_template.setText(self.keylist_to_string(template))
self._ui.line_edit_pattern.setText(interval_pattern(template))
chord = transpose(template, self.transpose)
self._ui.line_edit_chord.setText(self.keylist_to_string(chord))
def _rotate_once(lst: list) -> list:
acc = lst[1:]
acc.append(transpose(lst[0], 12))
return acc
def _base_form(chord: list) -> list:
head = keynumber(chord[0])
return transpose(chord, -head)
_add("Diminished 7", [0, 3, 6, 9])
_add("Minor sharp 9", [0, 3, 7, 11, 14])
_add("Minor 9", [0, 3, 7, 10, 14])
_add("Minor 6 9", [0, 3, 7, 9, 14])
_add("Minor 11", [0, 3, 7, 10, 14, 17])
_add("Minor add 9", [0, 3, 7, 14])
_add("Minor add 11", [0, 3, 7, 17])
_add("whole-6", [0, 2, 4, 6, 8, 10], "whole-tone cluster")
_add("Cycle minor 3rds", [0, 3, 6, 9])
_add("Cycle major 3rds", [0, 4, 8])
_add("Cycle perfect 4ths", [0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55])
_add("Cycle perfect 5ths", [0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77])
_add("Cycle augmented 5ths", [0, 8, 16])
_add("Cycle major 6ths", [0, 9, 18, 27])
_add("Cycle major 7ths", [0, 11, 22, 33, 44, 55], "1/2 cycle of major 7ths")
_add("Cycle minor 7ths", [0, 10, 20, 30, 40, 50], "Cycle of minor 7ths")
CHORD_DICTIONARY = {}
"""
Maps names to Chord objects.
Unlike CHORD_TEMPLATE_DICTIONARY, where all chords are in the key of C, CHORD_DICTIONARY contains chords for all
keys.
"""
for (template_name, root) in CHORD_TEMPLATE_DICTIONARY.items():
for key in range(0, 12):
text = "%-3s %s" % (keyname(key), template_name)
note_list = transpose(root.template, key)
CHORD_DICTIONARY[text] = Chord(text, note_list)