def get_fitness (self):
notes = self.notes
original = self.orig_notes
notes_on_key = 0
note_density = 0
num_notes = 0
non_rest_tatums = 0
markov_score = 0
prob = []
key = sound.get_key(self.notes)
key_num = key[0]
isMinor = False
if key[2] == key[0]+3:
isMinor = True
prob = probdata.KP_MINOR_KEY_PROFILE_DATA
else:
prob = probdata.KP_MAJOR_KEY_PROFILE_DATA
prev = 0
for index, i in enumerate(self.notes):
if len(i)!=0:
note_val = sound.midival_note(i[0].midi_note)[0]
non_rest_tatums += 1
num_notes = num_notes+len(i)
for note in i:
if sound.midival_note(note.midi_note)[0] in key:
notes_on_key += 1
if index == 0:
prev = note_val
continue
prob_ind = relative_distance (prev, note_val)
#print prob_ind
markov_score = markov_score+prob[prob_ind]*1000
prev = note_val
markov_score = float(markov_score)/float(non_rest_tatums)
note_density = float(num_notes)/float(non_rest_tatums)
dense_penalty = note_density - 1.0
off_key_penalty = (1.0 - float(notes_on_key)/float(num_notes))*100
print markov_score/float(non_rest_tatums), dense_penalty, off_key_penalty
fitness = markov_score/float(non_rest_tatums)-dense_penalty-off_key_penalty
return fitness
def mutate_add_minor_third(self):
# print 'Adding minor third'
"""Add a minor note in the same key to a random tatum"""
k = []
while len(k)==0:
tatum_index = random.randint(1, (len(self.notes)-1))
k = self.notes[tatum_index]
if len(self.notes[tatum_index])>1:
return
index_in_tatum = random.randint(0,len(k)-1)
note = sound.midival_note(self.notes[tatum_index][index_in_tatum].midi_note)[0]
third = (note+3)%12
duration = self.notes[tatum_index][0].duration
self.notes[tatum_index].append(notes.Note(0,72+third,duration))
def mutate_add_fifth(self):
"""Add a fifth note in the same key to a random tatum"""
#print 'Adding Fifth'
k = []
while len(k)==0:
tatum_index = random.randint(1, (len(self.notes)-1))
k = self.notes[tatum_index]
if len(self.notes[tatum_index])>1:
return
index_in_tatum = random.randint(0,len(k)-1)
d = sound.make_scales()
note = sound.midival_note(self.notes[tatum_index][index_in_tatum].midi_note)[0]
fifth = d[str(note)][4]
duration = self.notes[tatum_index][0].duration
self.notes[tatum_index].append(notes.Note(0,72+fifth,duration))
