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Rhythm.py
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Rhythm.py
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import random
import math
# with attack at the begining of this 1/4 beat
#4 * 1/16
EVEN1 = [2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
#2 * 1/8
EVEN2 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]
#1 * 1/4
EVEN3 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
#1/8 1/16 1/16
MIX1 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 1, 1, 1]
#1/16 1/16 1/8
MIX2 = [2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
#trip
TRIP1 = [2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]
#doted
DOT1 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
#DOT2 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1]
#DOT3 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
#DOT4 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1]
#DOT5 = [2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1]
# no attack at the beginning of this beat
# even dura
DURA1 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
DURA2 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
DURA3 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
DURA4 = [1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
DURA5 = [1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
#trip dura
DURA6 = [1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]
#dot dura
DURA7 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
DURA8 = [1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
# pause
# trip pause upbeat
PAUSE1 = [0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1]
# pause1/8 + 1/8
PAUSE2 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1]
# pause1/8 + 1/16 + 1/16
PAUSE3 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1]
# even pause
PAUSE4 = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
#Syncopation
SYNC1 = [0, 0, 0, 0, 0, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0]
# 1/16 + 1/16 + pause1/8
PAUSE5 = [2, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
# 1/8 + pause1/8
PAUSE6 = [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0]
# mix of prolonged duration and pause
DURP1 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
DURP2 = [1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
DURP3 = [1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]
DURP4 = [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0]
RhyBank = [[], EVEN1, EVEN2, EVEN3, MIX1, MIX2, TRIP1, DOT1, DURA1, DURA2, DURA3,
DURA4, DURA5, DURA6, DURA7, DURA8, PAUSE1, PAUSE2, PAUSE3, PAUSE4, SYNC1, PAUSE5,
PAUSE6, DURP1, DURP2, DURP3, DURP4]
GenDic = {"Ballad":1, "Bebop":2, "Blues":3, "Bossa Nova":4}
"""
1-15: DOES NOT START WITH PAUSE
16-20: START WITH PAUSE
21-26: END WITH PAUSE
1-7, 21, 22: START WITH ATTACK
"""
RhyDic = {"EVEN1":1, "EVEN2":2, "EVEN3":3, "MIX1":4, "MIX2":5, "TRIP1":6, "DOT1":7,
"DURA1":8, "DURA2":9, "DURA3":10, "DURA4":11, "DURA5":12, "DURA6":13,
"DURA7":14, "DURA8":15, "PAUSE1":16, "PAUSE2":17, "PAUSE3":18, "PAUSE4":19,"SYNC1":20,
"PAUSE5":21, "PAUSE6":22, "DURP1":23, "DURP2":24, "DURP3":25, "DURP4":26}
"""
@test RhyBank and RhyDic
print(RhyBank[RhyDic["DURP4"]][0])
print(RhyBank[RhyDic["DURP4"]][23])
"""
#correlation list
Correlation = []
row = []
Correlation += [row]
for i in range(1, 27):
row = []
row.append(0.0)
for j in range(1, 27):
if RhyBank[i][23] == 0 and RhyBank[j][0] == 1: #Pause to Tie cannot occur
row.append(0.0)
continue
if i <= 6 and (j <= 6 or j == 8 or j == 23):
row.append(0.95)
else:
row.append(0.7)
Correlation += [row]
"""
test Correlation
for i in range(1, 26):
for j in range(1, 26):
print(Correlation[i][j])
"""
class rhythm:
def __init__(self):
self.hasInit = False
def QuarterIndex(self, index):
if (index == 1):
return 0 #First quarternote of this chord-phrase
elif (index % 2 == 1):
return 1 #Odd quarternote
elif (index % 2 == 0):
return 2 #Even quarternote
def assignDynamix(self, original):
#adjust dynamix of attacks according to upbeat/downbeat
assigned = []
original2 = []
for i in original:
for j in i:
original2.append(j)
for i in range(len(original2)):
if original2[i] == 0:
assigned.append(0)
elif original2[i] == 1:
assigned.append(-1)
elif original2[i] == 2:
dyn = self.dynamix
if i % 12 == 0:
dyn += 3
if i % 24 == 0:
dyn += 3
if dyn > 127:
assigned.append(127)
else:
assigned.append(dyn)
return assigned
def generatePiano(self):
Result = [] # the actual rhythm
resultNum = []
resultNum = [0] * 27
# if this call is for BR, whether the quarternotes appeared in the BR
n = int(round((self.duration * 4), 0))
if(self.br == True):
self.cor = list(Correlation)
#if this is for BR, initialize self.cor
prev = 19
for i in range(1, n + 1):
if(self.QuarterIndex(i) == 0):
prev = 19
#weighted randomization
summation = 0.0
for j in range(1, 27):
summation += self.cor[prev][j]
normalize = []
normalize.append(0.0)
cumulative = []
cumulative.append(0.0)
for k in range(1, 27):
normalize.append(self.cor[prev][k]/summation)
cumulative.append(cumulative[k-1] + normalize[k])
#randomize according to the row of self.cor[prev]
#assign the result of randomization to prev
randomizer = random.uniform(0, 1)
k = 1
while(cumulative[k] < randomizer):
k += 1
k %= 27
#assert k is the index of the randomized result
resultNum[k] = 1
prev = k
Result.append(RhyBank[k])
#print(Result)
if(self.br == True):
#decrease the numbers in columns (column index not in resultNum) in self.cor
for i in range(1, 27):
for j in range(1, 27):
if resultNum[j] == 0:
self.cor[i][j] *= self.cor[i][j]
#print(Result)
return Result
def bassBossa(self):
Res = []
n = int(round(self.duration * 0.25, 0))
for index in range(1, n + 1):
if(self.QuarterIndex(index) == 0):
Res += list(DOT1)
elif (self.QuarterIndex(index) == 1):
randomizer = random.randint(1, 100)
if randomizer <= 25:
Res += list(DURA2)
elif randomizer > 25 and randomizer <= 50:
Res += list(PAUSE2)
elif randomizer > 50 and randomizer <= 75:
Res += list(DURA3)
else:
Res += list(DURA7)
elif(self.QuarterIndex(index) == 2):
randomizer = random.randint(1, 100)
if randomizer <= 70:
Res += list(DOT1)
elif randomizer > 70 and randomizer <= 90:
Res += list(MIX1)
else:
Res += list(EVEN2)
return Res
def bassBallad(self):
randomizer = random.randint(1, 100)
if randomizer <= 57:
return list(EVEN2)
elif randomizer > 57 and randomizer <= 62:
return list(EVEN3)
elif randomizer > 62 and randomizer <= 67:
return list(MIX1)
elif randomizer > 67 and randomizer <= 80:
return list(TRIP1)
elif randomizer > 80 and randomizer <= 85:
return list(DURA2)
elif randomizer > 85 and randomizer <= 90:
return list(DURA3)
else:
return list(DURA6)
def bassBop(self):
randomizer = random.randint(1, 100)
if randomizer <= 57:
return list(EVEN2)
elif randomizer > 57 and randomizer <= 62:
return list(EVEN3)
elif randomizer > 62 and randomizer <= 67:
return list(MIX1)
elif randomizer > 67 and randomizer <= 80:
return list(DOT1)
elif randomizer > 80 and randomizer <= 90:
return list(DURA2)
elif randomizer > 90 and randomizer <= 95:
return list(DURA3)
else:
return list(DURA7)
def bassBlues(self):
Result = []
randomizer = random.randint(1, 100)
if randomizer <= 70:
#return [list(EVEN2)]
Result += list(EVEN2)
elif randomizer > 70 and randomizer <= 80:
#return [list(EVEN3)]
Result += list(EVEN3)
elif randomizer > 80 and randomizer <= 85:
#return [list(MIX1)]
Result += list(MIX1)
elif randomizer > 85 and randomizer <= 90:
#return [list(DURA1)]
Result += list(DURA1)
elif randomizer > 90 and randomizer <= 95:
#return [list(DURA2)]
Result += list(DURA2)
else:
#return [list(PAUSE2)]
Result += list(PAUSE2)
return Result
def generateBass(self):
Result = []
if(GenDic[self.genre] == 4): #Bossa Nova
Result.append(self.bassBossa())
else:
n = int(round(self.duration * 4, 0))
for index in range(1, n + 1):
if (self.QuarterIndex(index) == 0):
#this quarternote is the first quarternote of this chord
randomizer = random.randint(1, 100)
if randomizer <= 65:
Result.append(list(EVEN2))
elif randomizer > 65 and randomizer <= 95:
Result.append(list(EVEN3))
else:
Result.append(list(MIX1))
elif (self.QuarterIndex(index) == 1):
#this quarternote is the 3rd/5th/7th quarternote of this chord
randomizer = random.randint(1,100)
if randomizer <= 80:
Result.append(list(EVEN2))
elif randomizer > 80 and randomizer <= 90:
Result.append(list(EVEN3))
else:
Result.append(list(MIX1))
else:
#not downbeat
if (GenDic[self.genre] == 1): #Ballad
Result.append(self.bassBallad())
elif (GenDic[self.genre] == 2): #Bebop
Result.append(self.bassBop())
elif (GenDic[self.genre] == 3): #Blues
Result.append(self.bassBlues())
return Result
def generateRhythmWrapper(self):
if (self.line == 1):
return self.assignDynamix(self.generateBass())
elif(self.line == 0):
return self.assignDynamix(self.generatePiano())
def generateRhythm(self, Duration, Genre, Line, Dynamix, BR):
# Line: True-Bass; False-Piano
self.genre = Genre # string
self.dynamix = Dynamix # int
self.duration = Duration # double
self.br = BR # boolean
self.line = Line # boolean
if(not self.hasInit):
self.cor = list(Correlation)
if(BR):
self.cor = list(Correlation)
return self.generateRhythmWrapper()