Hi,

I'm working on a generative music engine. See attached patch for rudimentary beginnings.
The Idea is that you enter a chord sequence through a gui, tap a tempo, and the machine starts improvising for you.
A more advanced version would let you enter the notes and tempo in one go via midi. Just play the song in block-chords on quarter notes and hit a predefined key as soon as the chord sequence loops.

I have made a version of this patch that works quite well for one tempo and chord sequence.
see: http://puredata.hurleur.com/viewtopic.php?pid=34264

I have also made a start on the generic version. You can choose a scale, and it translates numbers into notes for that scale. See attachment.

I'd love to collaborate on this. Who's up for that?

Some questions about the patch I made:
I have a sub-patch called SelectNoteFromScale, that inputs a number and a list that represents a scale.
So input 0 in any scale outputs 0. Input 1 plus Major, output 2, etcetera.
It was quite easy to get working for positive numbers, but the negative ones required some hacks I don't really understand myself, even though I made it
I've commented it as far as I could.

Who can explain why/how this works?
Even better: I\m sure there is an elegant way of doing this. How?

Then some more general questions:
I made this based on lists for the scales. What would be the advantages/disadvantages of doing it with arrays?

I made this with the length of the list varying according to the scale. that way you can use a counter as the input for SelectNoteFromScale, and hear a nice scale being played.
Another way would be to have the list always 12 long. That would have advantages for transposing melodies to other scales. Look here:

Your thoughts on this are much appreciated.

All the best,
Bart.

http://www.pdpatchrepo.info/hurleur/AutoImpro.pd

Hi,

this patch is verry usefull to me, those scales saved me a lot of time.
I added 5 basic forms of chords: MAJ/MIN/SEPT/DIM/AUG.
For now it's only MAJ6,MIN6,MIN7,MAJ7,DIM, and AUG. Basically harmonies from the golden age of swing:-).
It's not a harmonizer - it's a jazzonizer.

I'm planning to implement (or try to) an algo which approaches Joe Vieras theory on writing harmonies for brass section from a given melody and chord symbol.
(from the book: "Arrangment und Improvisation" (reihe Jazz/UE 24003)
So I think I'll need to write a melody into an array - check pitch and position index and then decide further steps.
Should i use arrays or lists for this? any suggestions?
But for now, there are only the chords and their inversions (if you find a mistake, please correct).
There is no "Root" logic yet.
Walking base anyone? (or good refrence on how to write a nice walking base?)

cheers

http://www.pdpatchrepo.info/hurleur/AutoImpro_chords.pd

edit: of course its not Major7 - its just 7. same mistake in the patch.
intervalls should be correct - only comment is wrong.