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Author: NormanLeary

ReadMe.txt

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+RandomChords 1.2.3
+
+The purpose of the program is to generate random chords to inspire music creation.
+Run the executable and you will be asked if you want to configure parameters or generate a chord with
+the default parameters.
+Input "c" to configure or Enter for default.
+
+- Parameters -
+How many clashes allowed? - Input a number from 0 to 13 to tell the program how many clashes (notes at one
+semitone distance) the chord should contain. The default value is 1.
+How many repeated notes allowed? - Input a number from 0 to 13 to determine how many notes can be repeated
+in the chord. The default value is 0.
+How many notes? - This is the number of notes you want the chord to contain. Input a number from 4 to 13.
+The default value is 6.
+Lowest interval? - The lowest interval between notes expressed in number of semitones. Accepts values from
+1 to 11. The default value is 2.
+Highest interval? - The highest interval between notes expressed in number of semitones. Accepts values
+from 2 to 11.
+
+If the program cannot find a chord with the parameters you have set, it will try 10,000 combinations, then
+modify the parameters, by increasing the number of clashes and repeated notes allowed, then try 10,000 more
+combinations. In order to reset the parameters, you will have to choose the configuration option again at
+the prompt.
+
+The chord will be displayed in a terminal window, in the following format:
+
+root=  D
+lowest=  C
+Intervals=  [6, 2, 5, 3]
+chord=  D C F# G# C# E
+
+Root: the chord root, placed on octave n. 2 of a preset inside a DAW or other music program.
+Lowest: the lowest note of the chord, placed on octave 4.
+Intervals: first interval is the distance in semitones from the lowest note, second interval distance from
+the second note and so on.
+Chord: the chord expressed in note names. First note is the root on octave 2, second note is the lowest note
+of the chord on octave 4, the other notes are above the lowest note, ending possibly on higher octaves.
+
+At prompt input Enter to generate a new chord, "q" to quit the program. Just closing the terminal window will
+also close the program.
+
+New in this version:
+
+- Improved algorithm
+- Modified default parameters to 4 note chords with no clashes and no repeated notes

randomchords_1.2.3.py

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+"""Random Chords 1.2.3 - Generate random chords.
+Copyright (C) 2023  Fonazza-Stent
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>."""
+
+import random
+from random import randint
+notes=["C","C#","D","D#","E","F","F#","G","G#","A","A#","B"]
+clashes=0
+repeats=0
+firstchord=0
+clashlist=["CC#","C#D","DD#","D#E","EF","FF#","F#G","GG#","G#A","AA#","A#B","BC"]
+index=1
+lowrange=2
+hirange=7
+notesnumber=4
+trycheck=0
+maxrepeats=False
+def init():
+    global oktwo
+    global okeight
+    global oknine
+    global okten
+    global okeleven
+    global chordnotes
+    global counter
+    global chord
+    global chordstring
+    global clash
+    global repeat
+    global notelist
+    global occurrencies
+    global clash_occ
+    global repeatthree
+
+    oktwo=0
+    okfive=0
+    okeight=0
+    oknine=0
+    okten=0
+    okeleven=0
+    chordnotes=[]
+    chord=[]
+    counter=1
+    octave=4
+    chordstring=""
+    clash=0
+    repeat=0
+    repeatthree=False
+    notelist=[]
+    occurrencies=[]
+    clash_occ=[0,0,0,0,0,0,0,0,0,0,0,0]
+    random.seed()
+
+
+
+
+def validate_chord():
+    global clash
+    global repeat
+    global notelist
+    global occurrencies
+    global clash_occ
+    global clashcount
+    global repeatthree
+    for note in chord:
+        #print (note)
+        for checknote in chord:
+            pair=note+checknote
+            for clashtype in clashlist:
+                if pair==clashtype:
+                    clash_occ[clashlist.index(clashtype)]=clash_occ[clashlist.index(clashtype)]+1
+    for eachclash in clash_occ:
+        clash=clash+eachclash
+
+    occ_check=0
+    note_occ=chord[0]
+    notelist.append(note_occ)
+    occurrencies.append(0)
+    for note in chord:
+        note_occ=note
+        items=len(notelist)
+        for x in range (0,items):
+            if note_occ==notelist[x]:
+                count=int(occurrencies[x])
+                occurrencies[x]=count+1
+                occ_check=1
+        if occ_check==0:
+            notelist.append(note_occ)
+            occurrencies.append(1)
+        occ_check=0
+    for value in occurrencies:
+        if value>1:
+            repeat=repeat+value
+        if value>2:
+            repeatthree=True
+    
+init()
+
+while True:
+
+    root= randint(1,12)
+    randomloop=randint(3,15)
+    for n in range (1,randomloop):
+        randreset=randint(2,11)
+    lowest=randint(2,11)
+    chord.append(notes[root-1])
+    lowestvalue=root+lowest
+    if lowestvalue>12:
+        lowestvalue=lowestvalue-12
+    chord.append(notes[lowestvalue-1])
+    
+    notevalue=lowestvalue
+    
+    while counter<notesnumber-1:
+        interval=randint(lowrange,hirange)
+        if interval!=2 and interval<8:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==2 and oktwo==0:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==8 and okeight==0:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==9 and oknine==0:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==10 and okten==0:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==11 and okeleven==0:
+            chordnotes.append(interval)
+            notevalue=notevalue+interval
+            if notevalue>12:
+                notevalue=notevalue-12
+            chord.append(notes[notevalue-1])
+            counter=counter+1
+        if interval==2:
+            oktwo=1
+        if interval==5:
+            okfive=1
+        if interval==6:
+            oksix=1
+        if interval==7:
+            okseven=1
+        if interval==8:
+            okeight=1
+        if interval==9:
+            oknine=1
+        if interval==10:
+            okten=1
+        if interval==11:
+            okeleven=1
+        
+    validate_chord()
+
+    if clash<=clashes and repeat<=repeats and repeatthree==False:
+        if firstchord==1:
+            print ("\n")
+            print (clashes, " clashes allowed")
+            print (repeats, " repeated notes allowed")
+
+            print ("root= ",notes[root-1])
+            print ("lowest= ",notes[lowestvalue-1])
+            print ("Intervals= ",chordnotes)
+            for items in chord:
+                chordstring=chordstring+items+" "
+            print ("chord= ",chordstring)
+            print ("\n")
+            if trycheck==1:
+                """clashes=clashes_mem
+                repeats=repeats_mem"""
+                True
+                trycheck=0
+            more=input("Enter for new chord, q to quit ")
+            if more=="q":
+                quit()
+        firstchord=1
+        configure=input("c to configure, Enter for default parameters: ")
+        if configure=="c":
+            clashesyes=-1
+            while clashesyes<0 or clashesyes>13:
+                clashesinput=input("How many clashes allowed? (0 to 13, default 0): ")
+                if clashesinput.isdigit():
+                    clashesyes=int(clashesinput)
+                    clashes=clashesyes
+                    clashes_mem=clashes
+                if clashesinput=='':
+                    clashesyes=0
+                    clashes=clashesyes
+            repeats=-1
+            while repeats<0 or repeats>13:
+                repeatinput=input("How many repeated notes allowed? (0 to 13, default 0): ")
+                if repeatinput.isdigit():
+                    repeats=int(repeatinput)
+                    repeats_mem=repeats
+                if repeatinput=='':
+                    repeats=0
+            notesnumber=-1
+            while notesnumber <4 or notesnumber>13:
+                inputnotesnumber=input("How many notes? (4 to 13, default 4): ")
+                if inputnotesnumber.isdigit():
+                    notesnumber=int(inputnotesnumber)
+                if inputnotesnumber=='':
+                    notesnumber=4
+            lowrange=-1
+            while lowrange <1 or lowrange>11:
+                lowrangeinput=input("Lowest interval? (1 to 11, default 2): ")
+                if lowrangeinput.isdigit():
+                    lowrange=int(lowrangeinput)
+                if lowrangeinput=='':
+                    lowrange=2
+            hirange=-1
+            while hirange <3 or hirange>11:
+                hirangeinput=input("Highest interval? (3 to 11, default 7): ")
+                if hirangeinput.isdigit():
+                    hirange=int(hirangeinput)
+                if hirangeinput=='':
+                    hirange=7
+            if lowrange>hirange:
+                low=lowrange
+                high=highrange
+                lowrange=high
+                highrange=low
+
+                
+            index=1
+    index=index+1
+    if index>10000:
+        print ("Trying 10.000 combinations")
+        trycheck=1
+        if clashes==0:
+            clashes=clashes+1
+        if maxrepeats==True:
+            clashes=clashes+1
+            maxrepeats=False
+        print ("Clashes allowed:",clashes)
+        if clashes>=13:
+            clashes=13
+        repeats=repeats+1
+        print ("Repeated notes allowed:",repeats)
+        if repeats>=13:
+            maxrepeats=True
+            repeats=0
+    
+            
+        index=1
+    init()
+
+