def generate_chord_sequence(self, length=20):
"""
Just for a laugh, use the trained n-gram to generate a chord
sequence and output it in a playable form.
Returns a tuple: (chords, tags)
@todo: this isn't implemented yet for n-grams. It's not a
high priority, but would be fun.
"""
# Easily done, because the NgramModel already implements it itself
raise NotImplementedError, "not yet done generation for n-grams"
# This is what the other tagger did:
from jazzparser.utils.chords import int_to_chord_numeral
# Use the model to generate randomly
rand_seq = self.model.random_sample(random.Random(), length)
pitch = 0
chords = []
prochords,tags = zip(*rand_seq)
# Convert the generated observations into readable chords
for chord in prochords:
interval,__,ctype = chord.partition("-")
chords.append("%s%s" % (int_to_chord_numeral(pitch),ctype))
pitch = (pitch + int(interval)) % 12
return (chords, tags)
def generate_chord_sequence(self, length=20):
"""
Just for a laugh, use the trained n-gram to generate a chord
sequence and output it in a playable form.
Returns a tuple: (chords, tags)
@todo: this isn't implemented yet for n-grams. It's not a
high priority, but would be fun.
"""
# Easily done, because the NgramModel already implements it itself
raise NotImplementedError, "not yet done generation for n-grams"
# This is what the other tagger did:
from jazzparser.utils.chords import int_to_chord_numeral
# Use the model to generate randomly
rand_seq = self.model.random_sample(random.Random(), length)
pitch = 0
chords = []
prochords, tags = zip(*rand_seq)
# Convert the generated observations into readable chords
for chord in prochords:
interval, __, ctype = chord.partition("-")
chords.append("%s%s" % (int_to_chord_numeral(pitch), ctype))
pitch = (pitch + int(interval)) % 12
return (chords, tags)
def __unicode__(self):
return unicode('%s%s' % (int_to_chord_numeral(self.root), self.type))
def _get_jp_input(self):
""" A string format suitable for input to the Jazz Parser. """
return "%s%s" % (int_to_chord_numeral(self.root), self.type.symbol)
def _get_root_numeral(self):
if self.roman:
return int_to_chord_numeral(self._root)
else:
return int_to_pitch_class(self._root)
