CF1: New tonic rules - Githubissues

rualark / MGen

MGen: Windows PC C++ music generation and analysis laboratory, playing into MIDI port and exporting MIDI

http://arkhipenko.weebly.com

GNU Affero General Public License v3.0

45 stars 11 forks source link

CF1: New tonic rules #2205

Closed rualark closed 6 years ago

rualark commented 6 years ago

Old tonic rules are not very controllable.

New ideas:

All tonic notes get 100% weight and never more.
In some rare cases tonic note can get smaller weight (90%), when all conditions meet:
- Tonic length is less than half note (consider rule only for species 5)
- There is no leap to this tonic note
- This tonic note is not downbeat (consider rule only for species > 1)
- This tonic note is not a local culmination
Tonic rating should not be greater than 2 within 6 notes
Tonic rating should not be greater than 3 within 12 notes

rualark commented 6 years ago

Old rules:

Leap >M3 to tonic is 130%. Note length decrease two times is 85%. Downbeat is 130%. Longer than previous is 130%. Perfect consonance is 120%. If there is no local culmination higher around then 130%. First note is tonic 50%. Last note is tonic 50%. First tonic (if first note is not tonic) 50%. Last tonic (if last note is not tonic) 50%.

More than X tonic note equivalents within Y notes. Weights. Weights up to 180%:

Leap >M3 to tonic is 130%. Note length decrease two times is 85%. Downbeat is 130%. Longer than previous is 130%. Perfect consonance is 120%. If there is no local culmination higher around then 130%. First note is tonic 50%. Last note is tonic 50%. First tonic (if first note is not tonic) 50%. Last tonic (if last note is not tonic) 50%.