def test_interval(self):
"""
Try getting the interval between two chords and check it comes out
as expected.
"""
# Some randomly chosen tests
tests = [
(0, "C", "C", True),
(2, "F", "G", False),
(4, "D", "F#", False),
(6, "B", "F", True),
(8, "F", "Db", False),
(10, "Ab", "F#", False),
]
for interval, lower, upper, invertible in tests:
c0 = Chord(lower)
c1 = Chord(upper)
self.assertEqual(interval, Chord.interval(c0, c1))
# Try inverting the interval and check it's only the same in the
# cases where the interval is its own inverse
if invertible:
self.assertEqual(interval, Chord.interval(c1, c0))
else:
self.assertNotEqual(interval, Chord.interval(c1, c0))
def observation_from_chord_pair(crd1, crd2, chordmap):
if crd2 is None:
interval = 0
else:
interval = Chord.interval(Chord.from_name(str(crd1)), Chord.from_name(str(crd2)))
if not isinstance(crd1, Chord) and not isinstance(crd1, DbChord):
crd1 = Chord.from_name(crd1)
return "%d-%s" % (interval, chordmap[crd1.type])
def observation_from_chord_pair(crd1, crd2):
if crd2 is None:
interval = 0
else:
interval = Chord.interval(Chord.from_name(str(crd1)), Chord.from_name(str(crd2)))
if not isinstance(crd1, Chord):
crd1 = Chord.from_name(str(crd1))
return "%d-%s" % (interval, crd1.type)
def test_interval(self):
"""
Try getting the interval between two chords and check it comes out
as expected.
"""
# Some randomly chosen tests
tests = [(0, "C", "C", True), (2, "F", "G", False),
(4, "D", "F#", False), (6, "B", "F", True),
(8, "F", "Db", False), (10, "Ab", "F#", False)]
for interval, lower, upper, invertible in tests:
c0 = Chord(lower)
c1 = Chord(upper)
self.assertEqual(interval, Chord.interval(c0, c1))
# Try inverting the interval and check it's only the same in the
# cases where the interval is its own inverse
if invertible:
self.assertEqual(interval, Chord.interval(c1, c0))
else:
self.assertNotEqual(interval, Chord.interval(c1, c0))
def interval_observation_from_chord_string_pair(chord1, chord2, type_mapping=None):
"""
Given two strings representing chords, produces a string representing
a chord observation of the form x-t, where x is the interval between
the chords (numeric) and t is the type of the first chord.
"""
from jazzparser.data import Chord
chord1 = Chord.from_name(chord1)
if chord2 is None:
interval = ""
else:
chord2 = Chord.from_name(chord2)
interval = "%d" % Chord.interval(chord1,chord2)
# Apply a mapping to the chord type if one was given
if type_mapping is not None:
ctype = type_mapping[chord1.type]
else:
ctype = chord1.type
return "%s-%s" % (interval, ctype)
def interval_observation_from_chord_string_pair(chord1,
chord2,
type_mapping=None):
"""
Given two strings representing chords, produces a string representing
a chord observation of the form x-t, where x is the interval between
the chords (numeric) and t is the type of the first chord.
"""
from jazzparser.data import Chord
chord1 = Chord.from_name(chord1)
if chord2 is None:
interval = ""
else:
chord2 = Chord.from_name(chord2)
interval = "%d" % Chord.interval(chord1, chord2)
# Apply a mapping to the chord type if one was given
if type_mapping is not None:
ctype = type_mapping[chord1.type]
else:
ctype = chord1.type
return "%s-%s" % (interval, ctype)
def observation_from_chord_pair(crd1, crd2):
if crd1 is None or crd2 is None:
return "0"
return "%d" % Chord.interval(Chord.from_name(str(crd1)), Chord.from_name(str(crd2)))